<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-7151</journal-id>
<journal-title><![CDATA[Acta botánica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Act. Bot. Mex]]></abbrev-journal-title>
<issn>0187-7151</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C., Centro Regional del Bajío]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-71512024000100136</article-id>
<article-id pub-id-type="doi">10.21829/abm131.2024.2401</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desarrollo de la fase gametofítica de ocho especies de Pellaea (Pteridaceae, Polypodiophyta) presentes en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Development of the gametophytic phase of eight species of Pellaea (Pteridaceae, Polypodiophyta) present in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Ruiz]]></surname>
<given-names><![CDATA[Aniceto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ceja-Romero]]></surname>
<given-names><![CDATA[Jacqueline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-García]]></surname>
<given-names><![CDATA[Blanca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Biología, Área de Botánica Estructural y Sistemática Vegetal ]]></institution>
<addr-line><![CDATA[Cd. Mx ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<numero>131</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512024000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512024000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512024000100136&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes y Objetivos:  Pellaea (Pteridaceae) es un género de helechos de distribución subcosmopolita. Se ha documentado la morfología de las esporas y el desarrollo gametofítico de diversas especies de este taxon, registrándose de manera característica la presencia de apogamia. El objetivo de este trabajo fue describir y comparar el desarrollo protálico de ocho especies de Pellaea sect. Pellaea que habitan en México.  Métodos:  De cada una de las especies se recolectaron los ejemplares de respaldo en el campo, así como las pinnas fértiles de las que se obtuvieron las esporas, las cuales fueron sembradas en cajas Petri con agar y medio de Thompson. Los cultivos se mantuvieron a una temperatura de 18-25 °C, con un fotoperiodo de 12 horas luz/oscuridad, desde el inicio de la germinación hasta la madurez del gametofito.  Resultados clave:  Todos los taxones tuvieron esporas triletes y presentaron germinación tipo Vittaria. Se observaron dos tipos de desarrollo protálico: Adiantum y Ceratopteris. La forma de los gametofitos adultos fue cordiforme, espatulado-cordiforme o cordiforme-reniforme; los márgenes fueron lisos, ondulados o con dos células en forma de dientes. Los esporofitos de P. notabilis, P. ribae, P. sagittata, P. ternifolia y P. villosa fueron de origen sexual, mientras que los de P. cordifolia y P. oaxacana fueron apogámicos. Pellaea sagittata y P. ternifolia formaron esporofitos de origen sexual y también apogámicos. Pellaea pringlei y un representante de P. cordifolia no formaron esporofitos.  Conclusiones:  El desarrollo y las características de los gametofitos estudiados fueron similares a lo reportado en otros trabajos; se obtuvieron en la mayoría de las especies esporofitos de origen sexual y/o apogámico. Se describe por primera vez el desarrollo protálico de P. oaxacana, P. ribae y P. villosa, lo que permite conocer la información de 15 de las 16 especies de Pellaea sect. Pellaea que crecen en México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background and Aims:  Pellaea (Pteridaceae) is a fern genus with a subcosmopolitan distribution. The spore morphology and gametophytic development of several species of this taxon have been studied and the presence of apogamy has been characteristically registered. The aim of this work was to describe and compare the prothallial development of eight species of Pellaea sect. Pellaea from Mexico.  Methods:  Voucher specimens were collected for each species, as well as fertile pinnae from which spores were obtained, which were then sowed in Petri dishes with agar and Thompson's medium. Cultures were maintained at a temperature of 18-25 °C, with a 12 h light/dark photoperiod, from the start of germination until the gametophyte maturity.  Key results: All taxa had trilete spores and showed Vittaria-type germination. Two types of prothallial development were observed: Adiantum and Ceratopteris. The shape of the adult gametophytes was cordate, spatulate-cordate or cordate-reniform; the margins were smooth, undulate or with two tooth-shaped cells. The sporophytes of P. notabilis, P. ribae, P. sagittata, P. ternifolia and P. villosa were of sexual origin, whereas those of P. cordifolia and P. oaxacana were apogamous. Pellaea sagittata and P. ternifolia developed sporophytes of both sexual and apogamous origins. Pellaea pringlei and a specimen of P. cordifolia did not produce sporophytes.  Conclusions: The development and characteristics of the gametophytes studied were similar to those reported in other studies, obtaining in most species sporophytes of sexual and/or apogamous origin. For the first time, the prothallic development of P. oaxacana, P. ribae and P. villosa is described, providing information for 15 of the 16 species of Pellaea sect. Pellaea occurring in Mexico.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[apogamia]]></kwd>
<kwd lng="es"><![CDATA[bisexual]]></kwd>
<kwd lng="es"><![CDATA[esporas]]></kwd>
<kwd lng="es"><![CDATA[gametofitos]]></kwd>
<kwd lng="es"><![CDATA[helechos]]></kwd>
<kwd lng="es"><![CDATA[unisexual]]></kwd>
<kwd lng="en"><![CDATA[apogamy]]></kwd>
<kwd lng="en"><![CDATA[bisexual]]></kwd>
<kwd lng="en"><![CDATA[ferns]]></kwd>
<kwd lng="en"><![CDATA[gametophyte]]></kwd>
<kwd lng="en"><![CDATA[spores]]></kwd>
<kwd lng="en"><![CDATA[unisexual]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<collab>Adobe</collab>
<source><![CDATA[Adobe Photoshop CS4 extended]]></source>
<year>2008</year>
<publisher-loc><![CDATA[San José, USA ]]></publisher-loc>
<publisher-name><![CDATA[Adobe Systems Incorporated]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alexander]]></surname>
<given-names><![CDATA[P. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pellaea zygophylla, a new combination for a distinctive &amp; well-known but neglected fern]]></article-title>
<source><![CDATA[Journal of Semiarid Environments]]></source>
<year>2021</year>
<volume>2</volume>
<page-range>1-33</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barrington]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Paris]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ranker]]></surname>
<given-names><![CDATA[T. A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Systematic inferences from spore and stomate size in the ferns]]></article-title>
<source><![CDATA[American Fern Journal]]></source>
<year>1986</year>
<volume>76</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>149-59</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barrington]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Patel]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Southgate]]></surname>
<given-names><![CDATA[M. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inferring the impacts of evolutionary history and ecological constraints on spore size and shape in the ferns]]></article-title>
<source><![CDATA[Applications in Plant Sciences]]></source>
<year>2020</year>
<volume>8</volume>
<numero>4</numero>
<issue>4</issue>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beck]]></surname>
<given-names><![CDATA[J. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Widham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Pryer]]></surname>
<given-names><![CDATA[K. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Do asexual polypoid lineages lead short evolutionary lives? A case study from the fern genus Astrolepis]]></article-title>
<source><![CDATA[Evolution]]></source>
<year>2011</year>
<volume>65</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>3218-29</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bucharová]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Münzbergová]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gene Flow among Populations of Two Rare Co-occurring Fern Species Differing in Ploidy Level]]></article-title>
<source><![CDATA[PLoS ONE]]></source>
<year>2012</year>
<volume>7</volume>
<numero>9</numero>
<issue>9</issue>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Díaz Espinoza]]></surname>
<given-names><![CDATA[J. A]]></given-names>
</name>
</person-group>
<source><![CDATA[Ciclo biológico de Diplazium lonchophyllum Kunze (Pteridophyta-Woodsiaceae) y Pellaea cordifolia (Sessé &amp; Mociño) A. R. Sm. (Pteridophyta-Pteridaceae)]]></source>
<year>2002</year>
<publisher-loc><![CDATA[Cd. Mx, México ]]></publisher-loc>
<publisher-name><![CDATA[Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dyer]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pellicer]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Savolainen]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Leitch]]></surname>
<given-names><![CDATA[I. J]]></given-names>
</name>
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genome size expansion and the relationship between nuclear DNA content and spore size in the Asplenium monanthes fern complex (Aspleniaceae)]]></article-title>
<source><![CDATA[BMC Plant Biology]]></source>
<year>2013</year>
<volume>13</volume>
<numero>219</numero>
<issue>219</issue>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gastony]]></surname>
<given-names><![CDATA[G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rollo]]></surname>
<given-names><![CDATA[D. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phylogeny and generic circumscriptions of cheilanthoid ferns (Pteridaceae: Cheilanthoideae) inferred from rbcL nucleotide sequences]]></article-title>
<source><![CDATA[American Fern Journal]]></source>
<year>1995</year>
<volume>85</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>341-60</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gastony]]></surname>
<given-names><![CDATA[G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rollo]]></surname>
<given-names><![CDATA[D. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cheilanthoid ferns (Pteridaceae: Cheilanthoideae) in the southwestern United States and adjacent Mexico-- a molecular phylogenetic reassessment of generic lines]]></article-title>
<source><![CDATA[Aliso]]></source>
<year>1998</year>
<volume>17</volume>
<page-range>131-44</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grusz]]></surname>
<given-names><![CDATA[A. L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A current perspective on apomixis in ferns]]></article-title>
<source><![CDATA[Journal of Systematics and Evolution]]></source>
<year>2016</year>
<volume>54</volume>
<page-range>656-65</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grusz]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Picard]]></surname>
<given-names><![CDATA[K. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Pryer]]></surname>
<given-names><![CDATA[K. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Schuettpelz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Haufler]]></surname>
<given-names><![CDATA[C. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae)]]></article-title>
<source><![CDATA[American Journal of Botany]]></source>
<year>2021</year>
<volume>108</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>263-83</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haufler]]></surname>
<given-names><![CDATA[C. H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ever since Klekowski: Testing a set of radical hypotheses revives the genetics of ferns and lycophytes]]></article-title>
<source><![CDATA[American Journal of Botany]]></source>
<year>2014</year>
<volume>101</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>2036-42</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haufler]]></surname>
<given-names><![CDATA[C. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Pryer]]></surname>
<given-names><![CDATA[K. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Schuettpelz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Sessa]]></surname>
<given-names><![CDATA[E. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Farrar]]></surname>
<given-names><![CDATA[D. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Moran]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Schneller]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Watkins]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sex and the single gametophyte: Revising the homosporous vascular plant life cycle in light of contemporary research]]></article-title>
<source><![CDATA[BioScience]]></source>
<year>2016</year>
<volume>66</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>928-37</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hayes]]></surname>
<given-names><![CDATA[D. W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Some studies of apogamy in Pellaea atropurpurea (L.) Link]]></article-title>
<source><![CDATA[Transactions of American Microscopical Society]]></source>
<year>1924</year>
<volume>43</volume>
<page-range>119-35</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Henry]]></surname>
<given-names><![CDATA[T. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bainard]]></surname>
<given-names><![CDATA[J. D]]></given-names>
</name>
<name>
<surname><![CDATA[Newmaster]]></surname>
<given-names><![CDATA[S. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genome size evolution in Ontario ferns (Polypodiidae): evolutionary correlations with cell size, spore size, and habitat type and an absence of genome downsizing]]></article-title>
<source><![CDATA[Genome]]></source>
<year>2014</year>
<volume>57</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>555-66</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Andrada]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Páez]]></surname>
<given-names><![CDATA[V. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[O. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ploidy level and obligate apogamy in Argyrochosma nivea (Poir.) Windham var. tenera (Pteridaceae)]]></article-title>
<source><![CDATA[Hoehnea]]></source>
<year>2015</year>
<volume>42</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>233-7</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herrera-Soriano]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Arreguín-Sánchez]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Rojas-Velasco]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Lepe-Becerra]]></surname>
<given-names><![CDATA[L. Á.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biología reproductiva de Pellaea ovata (Desv.) Weath. (Pteridaceae-Pteridophyta)]]></article-title>
<source><![CDATA[Polibotánica]]></source>
<year>2011</year>
<volume>31</volume>
<page-range>51-9</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hornych]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Férová]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hori]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Ko&#353;nar]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ekrt]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Apomictic fern fathers: an experimental approach to the reproductive characteristics of sexual, apomict, and hybrid fern gametophytes]]></article-title>
<source><![CDATA[American Journal of Botany]]></source>
<year>2022</year>
<volume>109</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>628-44</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huerta-Zavala]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Arreguín-Sánchez]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Quiroz-García]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Nava]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ciclo de vida de Pellaea ternifolia (Cav.) Link subsp. ternifolia (Pteridaceae-Polypodiidae)]]></article-title>
<source><![CDATA[Polibotánica]]></source>
<year>2013</year>
<volume>35</volume>
<page-range>65-84</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kirkpatrick]]></surname>
<given-names><![CDATA[R. E. B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigating the monophyly of Pellaea (Pteridaceae) in the context of a phylogenetic analysis of Cheilanthoid ferns]]></article-title>
<source><![CDATA[Systematic Botany]]></source>
<year>2007</year>
<volume>32</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>504-18</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Klekowski]]></surname>
<given-names><![CDATA[E. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reproductive biology of the Pteridophyta. III. A study of the Blechnaceae]]></article-title>
<source><![CDATA[Botanical Journal of the Linnean Society]]></source>
<year>1969</year>
<volume>62</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>361-77</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knobloch]]></surname>
<given-names><![CDATA[I. W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Preliminary Review of Spore Number and Apogamy within the Genus Cheilanthes]]></article-title>
<source><![CDATA[American Fern Journal]]></source>
<year>1966</year>
<volume>56</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>163-7</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Manton]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<source><![CDATA[Problems of cytology and evolution in the pteridophytes]]></source>
<year>1950</year>
<publisher-loc><![CDATA[Cambridge, UK ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Garcia]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Yatskievych]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Una nueva especie de Pellaea (Pteridaceae) del estado de San Luis de Potosí, México]]></article-title>
<source><![CDATA[Acta Botanica Mexicana]]></source>
<year>2001</year>
<volume>57</volume>
<page-range>15-21</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mickel]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The pteridophytes of Mexico]]></article-title>
<source><![CDATA[Memoirs of the New York Botanical Garden]]></source>
<year>2004</year>
<volume>88</volume>
<page-range>1-1054</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nayar]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Bajpai]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Morphology of the gametophytes of some species of Pellaea and Notholaena]]></article-title>
<source><![CDATA[Botanical Journal of the Linnean Society]]></source>
<year>1963</year>
<volume>59</volume>
<numero>376</numero>
<issue>376</issue>
<page-range>63-76</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nayar]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Kaur]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gametophytes of homosporous ferns]]></article-title>
<source><![CDATA[Botanical Review (London)]]></source>
<year>1971</year>
<volume>37</volume>
<page-range>295-396</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Picard]]></surname>
<given-names><![CDATA[K. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Ranft]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Grusz]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Schuettpelz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[When it only takes one to tango: assessing the impact of apomixis in the fern genus Pteris]]></article-title>
<source><![CDATA[American journal of Botany]]></source>
<year>2021</year>
<volume>108</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>2220-34</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pickett]]></surname>
<given-names><![CDATA[F. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Manuel]]></surname>
<given-names><![CDATA[M. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of prothallus and apogamous embryo in Pellaea glabella Mettenius]]></article-title>
<source><![CDATA[Bulletin of the Torrey Club]]></source>
<year>1925</year>
<volume>52</volume>
<page-range>507-14</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<collab>PPG I</collab>
<article-title xml:lang=""><![CDATA[A community-based classification for extant ferns and lycophytes]]></article-title>
<source><![CDATA[Journal of Systematics and Evolution]]></source>
<year>2016</year>
<volume>54</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>563-603</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pray]]></surname>
<given-names><![CDATA[T. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The gametophytes of Pellaea section Pellaea: Dark-stiped series]]></article-title>
<source><![CDATA[Phytomorphology]]></source>
<year>1968</year>
<volume>18</volume>
<page-range>113-43</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pray]]></surname>
<given-names><![CDATA[T. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Interpopulational variation in the gametophytes of Pellaea andromedaefolia]]></article-title>
<source><![CDATA[American Journal of Botany]]></source>
<year>1968</year>
<volume>55</volume>
<page-range>951-60</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pray]]></surname>
<given-names><![CDATA[T. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The gametophytes of Pellaea section Pellaea: Light-stiped series]]></article-title>
<source><![CDATA[Phytomorphology]]></source>
<year>1970</year>
<volume>20</volume>
<page-range>137-44</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pray]]></surname>
<given-names><![CDATA[T. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Gametophytes of Natural Hybrids in the Fern Genus Pellaea]]></article-title>
<source><![CDATA[American Fern Journal]]></source>
<year>1971</year>
<volume>61</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>121-36</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Raghavan]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<source><![CDATA[Developmental biology of fern gametophytes]]></source>
<year>1989</year>
<publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rigby]]></surname>
<given-names><![CDATA[S. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[lnduction of apogamy in Pellaea glabella var. occidentalis]]></article-title>
<source><![CDATA[American Fern Journal]]></source>
<year>1973</year>
<volume>63</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>158-64</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sessa]]></surname>
<given-names><![CDATA[E. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Testo]]></surname>
<given-names><![CDATA[W. L]]></given-names>
</name>
<name>
<surname><![CDATA[Watkins Jr]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the widespread capacity for, and functional significance of, extreme inbreeding in ferns]]></article-title>
<source><![CDATA[New Phytology]]></source>
<year>2016</year>
<volume>211</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1108-19</page-range></nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Steil]]></surname>
<given-names><![CDATA[W. N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Apogamy in Pellaea atropurpurea]]></article-title>
<source><![CDATA[Botanical Gazette]]></source>
<year>1911</year>
<volume>52</volume>
<page-range>400-1</page-range></nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Steil]]></surname>
<given-names><![CDATA[W. N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New cases of apogamy in ferns. Preliminary note]]></article-title>
<source><![CDATA[Science]]></source>
<year>1915</year>
<numero>41</numero>
<issue>41</issue>
<page-range>293-4</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Steil]]></surname>
<given-names><![CDATA[W. N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies of some new cases of apogamy in ferns]]></article-title>
<source><![CDATA[Bulletin of the Torrey Botanical Club]]></source>
<year>1918</year>
<volume>45</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>93-108</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thiers]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Index Herbariorum: A Global Directory of Public Herbaria and Associated Staff]]></source>
<year>2023</year>
<publisher-name><![CDATA[New York Botanical Garden&#8217;s Virtual Herbarium]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[A. F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A revision of Pellaea section Pellaea]]></article-title>
<source><![CDATA[Annals of the Missouri Botanical Garden]]></source>
<year>1957</year>
<volume>44</volume>
<page-range>125-93</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[A. F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparisons of sexual and apogamous races in the fern genus Pellaea]]></article-title>
<source><![CDATA[Rhodora]]></source>
<year>1968</year>
<volume>70</volume>
<page-range>1-24</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[A. F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spores, chromosomes and relations of the fern Pellaea atropurpurea]]></article-title>
<source><![CDATA[Rhodora]]></source>
<year>1972</year>
<volume>74</volume>
<page-range>220-41</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[A. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ferns and allied plants, with special reference to tropical America]]></source>
<year>1982</year>
<publisher-loc><![CDATA[Nueva York, USA ]]></publisher-loc>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Tryon]]></surname>
<given-names><![CDATA[A. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Kramer]]></surname>
<given-names><![CDATA[K. U]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridaceae]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Kubitzki]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<source><![CDATA[The families and genera of vascular plants 1]]></source>
<year>1990</year>
<page-range>230-56</page-range><publisher-loc><![CDATA[Berlin, Heidelberg, Germany ]]></publisher-loc>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Velázquez-Montes]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridaceae]]></article-title>
<source><![CDATA[Flora del Bajío y de Regiones Adyacentes]]></source>
<year>2019</year>
<volume>210</volume>
<page-range>1-254</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wagner Jr]]></surname>
<given-names><![CDATA[W. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structure of spores in relation to fern phylogeny]]></article-title>
<source><![CDATA[Annals of the Missouri Botanical Garden]]></source>
<year>1974</year>
<volume>61</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>332-53</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Yatskievych]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revised nomenclature and a new North American record for the villose cliff brake (Pellaea, Pteridophyta)]]></article-title>
<source><![CDATA[Novon]]></source>
<year>2003</year>
<volume>13</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>358-62</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Yan]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[McAdam]]></surname>
<given-names><![CDATA[S. A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Banks]]></surname>
<given-names><![CDATA[J. A]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Timing of meristem initiation and maintenance determines the morphology of fern gametophytes]]></article-title>
<source><![CDATA[Journal of Experimental Botany]]></source>
<year>2021</year>
<volume>72</volume>
<numero>20</numero>
<issue>20</issue>
<page-range>6990-7001</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
