<?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>S0187-71512004000200075</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Taxa nuevos, nomenclatura, redefinición y distribución de las especies relacionadas con Polypodium colpodes Kunze (Polypodiaceae, Pteridophyta)]]></article-title>
<article-title xml:lang="en"><![CDATA[New taxa, nomenclature, redefinition and distribution of species related to Polypodium colpodes Kunze (Polypodiaceae, Pteridophyta)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tejero-Díez]]></surname>
<given-names><![CDATA[J. Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pacheco]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Estudios Superiores Iztacala ]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[D. F ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<numero>67</numero>
<fpage>75</fpage>
<lpage>115</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512004000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512004000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512004000200075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se describen dos taxa nuevos para la ciencia: Polypodium castaneum Maxon ex Tejero y P. colpodes var. venezuelense Tejero. Se proponen dos combinaciones nuevas: P. arcanum Maxon var. bakeri (Davenp.) Mickel et Tejero y P. colpodes Kunze var. oligomeron (H. Christ) Tejero. El nombre P. fuscopetiolatum A. R. Sm. se coloca en la sinonimia de P. colpodes Kunze. Se presenta una clave de identificación, así como la descripción y datos de la distribución geográfica de los ocho taxa neotropicales ligados a P. colpodes Kunze.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Two new taxa are described: Polypodium castaneum Maxon ex Tejero and P. colpodes var. venezuelense Tejero. Two new combinations are proposed, P. arcanum Maxon var. bakeri (Davenp.) Mickel et Tejero and P. colpodes Kunze var. oligomeron (H. Christ) Tejero. Polypodium fuscopetiolatum A. R. Sm. is placed in synonymy under P. colpodes Kunze. A key, descriptions and geographical distribution of the eight Neotropical taxa in the P. colpodes group are presented.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[América]]></kwd>
<kwd lng="es"><![CDATA[Polypodiaceae]]></kwd>
<kwd lng="es"><![CDATA[Polypodium]]></kwd>
<kwd lng="es"><![CDATA[taxonomía]]></kwd>
<kwd lng="en"><![CDATA[America]]></kwd>
<kwd lng="en"><![CDATA[Polypodiaceae]]></kwd>
<kwd lng="en"><![CDATA[Polypodium]]></kwd>
<kwd lng="en"><![CDATA[taxonomy]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ameneyro]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández Nava]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Arreguín Sánchez]]></surname>
<given-names><![CDATA[Ma. de la L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clave para la identificación de géneros, especies y variedades de pteridófitas del estado de Querétaro, México]]></article-title>
<source><![CDATA[An. Esc. Nal. Cienc. Biol]]></source>
<year>1995</year>
<volume>40</volume>
<page-range>11-82</page-range><publisher-loc><![CDATA[Méx ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anthony]]></surname>
<given-names><![CDATA[N. C]]></given-names>
</name>
<name>
<surname><![CDATA[Schlepe]]></surname>
<given-names><![CDATA[E. A. C. L. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[xPleopodium- a putative intergeneric fern hybrid from Africa]]></article-title>
<source><![CDATA[Bothalia]]></source>
<year>1985</year>
<volume>15</volume>
<page-range>555-9</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bommer]]></surname>
<given-names><![CDATA[J. E]]></given-names>
</name>
<name>
<surname><![CDATA[Christ]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Primitiae florae costaricensis]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Durand]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Pittier]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bull. Soc. Roy. Bot. Belgique]]></source>
<year>1896</year>
<volume>35</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>167-249</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Conzatti]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Flora taxonómica mexicana]]></source>
<year>1946</year>
<page-range>377</page-range><publisher-loc><![CDATA[México, D.F ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Mexicana de Historia Natural]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Christensen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: enumeratio omnium generum (anno 1753-1905) specierumque filicum et Hydropteridum ab anno 1753 ad finen anni 1905 descriptorum]]></source>
<year>1906</year>
<page-range>745</page-range><publisher-loc><![CDATA[Copenhague ]]></publisher-loc>
<publisher-name><![CDATA[H. Hagerup]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Christensen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: Supplementum 1906-1912]]></source>
<year>1913</year>
<page-range>60</page-range><publisher-loc><![CDATA[Copenhague ]]></publisher-loc>
<publisher-name><![CDATA[H. Hagerup]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Christensen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: Supplément preliminaire pour les années 1913, 1914, 1915, 1916]]></source>
<year>1917</year>
<page-range>60</page-range><publisher-loc><![CDATA[Copenhague ]]></publisher-loc>
<publisher-name><![CDATA[H. Hagerup]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Christensen]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: Supplementum tertium pro annis 1917-1933]]></source>
<year>1934</year>
<page-range>219</page-range><publisher-loc><![CDATA[Copenhague ]]></publisher-loc>
<publisher-name><![CDATA[H. Hagerup]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davenport]]></surname>
<given-names><![CDATA[G. E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Las especies escamosas del género Polypodium (s. str.) en Brasil]]></article-title>
<source><![CDATA[Revista Mus. La Plata, secc. Bot]]></source>
<year>1891</year>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de la Sota]]></surname>
<given-names><![CDATA[E. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revisión de las especies americanas del grupo Polypodium squamatum L]]></article-title>
<source><![CDATA[Revista Mus. La Plata, secc. Bot]]></source>
<year>1966</year>
<volume>10</volume>
<page-range>69-186</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de la Sota]]></surname>
<given-names><![CDATA[E. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The phylogeny and classification of the ferns]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Jermy]]></surname>
<given-names><![CDATA[A. C]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Linn. Soc., Bot]]></source>
<year>1973</year>
<volume>67</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>229-44</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Evans]]></surname>
<given-names><![CDATA[A. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New chromosome observations in the Polypodiaceae and Grammitidaceae]]></article-title>
<source><![CDATA[Caryologia]]></source>
<year>1963</year>
<volume>16</volume>
<page-range>671-7</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[L. D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The origin of the pteridophyte flora of Central America]]></article-title>
<source><![CDATA[Ann. Missouri Bot. Gard]]></source>
<year>1982</year>
<volume>69</volume>
<page-range>548-56</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[L. D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Contribuciones a la pteridología costaricense VIII: La hibridización en el trópico; Microgramma x Polypodium y Polypodium aspidiolepis Baker]]></article-title>
<source><![CDATA[Brenesia]]></source>
<year>1975</year>
<volume>6</volume>
<page-range>49-57</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Greuter]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Barrie]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Burdet]]></surname>
<given-names><![CDATA[H. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Chaloner]]></surname>
<given-names><![CDATA[W. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Demoulin]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Hawksworth]]></surname>
<given-names><![CDATA[D. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Jørgensen]]></surname>
<given-names><![CDATA[D. P. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Nicolson]]></surname>
<given-names><![CDATA[D. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[P. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Trehane]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[McNeill]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[International Code of Botanical Nomenclature (Saint Luis code)]]></source>
<year>2000</year>
<page-range>474</page-range><publisher-loc><![CDATA[Königstein ]]></publisher-loc>
<publisher-name><![CDATA[International Association for Plant Taxonomy-Koeltz Scientific Books]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haufler]]></surname>
<given-names><![CDATA[Ch. H]]></given-names>
</name>
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Lang]]></surname>
<given-names><![CDATA[F. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Whitmore]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodium]]></article-title>
<source><![CDATA[Flora of North America: Pteridophytes and gymnosperms]]></source>
<year>1993</year>
<volume>2</volume>
<page-range>315-423</page-range><publisher-loc><![CDATA[Nueva York ]]></publisher-loc>
<publisher-name><![CDATA[Oxford University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hensen]]></surname>
<given-names><![CDATA[R.V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revision of the Polypodium loriceum complex (Filicales, Polypodiaceae)]]></article-title>
<source><![CDATA[Nova Hedwigia]]></source>
<year>1990</year>
<volume>50</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>279-336</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hennipman]]></surname>
<given-names><![CDATA[E. P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The systematics of the Polypodiaceae (Filicales): posing the problems]]></article-title>
<source><![CDATA[Acta Bot. Neerl]]></source>
<year>1986</year>
<volume>35</volume>
<page-range>115</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hennipman]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Veldhoen]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Kramer]]></surname>
<given-names><![CDATA[K. U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodiaceae]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Kramer]]></surname>
<given-names><![CDATA[K. U]]></given-names>
</name>
<name>
<surname><![CDATA[Green]]></surname>
<given-names><![CDATA[P. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Kubitzki]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<source><![CDATA[The families and genera of vascular plants]]></source>
<year>1990</year>
<volume>1</volume>
<page-range>404</page-range><publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jarrett]]></surname>
<given-names><![CDATA[F. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies in the classification of the leptosporangiate ferns -1. The affinities of Polypodiaceae sensu stricto and the Grammitidaceae]]></article-title>
<source><![CDATA[Kew Bull]]></source>
<year>1980</year>
<volume>34</volume>
<page-range>823-35</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jarrett]]></surname>
<given-names><![CDATA[F. M]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: supplementum quintum (pro annis 1961-1975)]]></source>
<year>1985</year>
<page-range>245</page-range><publisher-name><![CDATA[Clarendon Press. Oxford]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Johns]]></surname>
<given-names><![CDATA[R. J]]></given-names>
</name>
<name>
<surname><![CDATA[Edward]]></surname>
<given-names><![CDATA[P. J]]></given-names>
</name>
<name>
<surname><![CDATA[Pichi-Sermolli]]></surname>
<given-names><![CDATA[R. E. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Linklater]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: supplementum sextum (pro annis 1976-1990)]]></source>
<year>1996</year>
<page-range>414</page-range><publisher-name><![CDATA[The Royal Botanical Gardens. Kew]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Johns]]></surname>
<given-names><![CDATA[R. J]]></given-names>
</name>
<name>
<surname><![CDATA[Edwards]]></surname>
<given-names><![CDATA[P. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Davies]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Challis]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Linklater]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: supplementum septimum (pro annis 1991-1995)]]></source>
<year>1997</year>
<page-range>124</page-range><publisher-name><![CDATA[The Royal Botanical Gardens. Kew]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knobloch]]></surname>
<given-names><![CDATA[I. W]]></given-names>
</name>
<name>
<surname><![CDATA[Correll]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ferns and fern allies of Chihuahua, Mexico]]></source>
<year>1962</year>
<page-range>198</page-range><publisher-loc><![CDATA[Renner, Texas ]]></publisher-loc>
<publisher-name><![CDATA[Texas Research Foundation]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lauer]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Problemas de la división fitogeográfica en América central]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Duemmlers Verlag]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Geoecología de la región montañosa de las Américas tropicales]]></source>
<year>1968</year>
<page-range>139-54</page-range><publisher-loc><![CDATA[Bonn ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Biosystematic analyses of the Hawaiian endemic fern species Polypodium pellucidum (Polypodiaceae) and related congenerics]]></source>
<year>1977</year>
<page-range>1-166</page-range><publisher-loc><![CDATA[Kansas, U.S.A ]]></publisher-loc>
<publisher-name><![CDATA[University of Kansas.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lorea]]></surname>
<given-names><![CDATA[H F]]></given-names>
</name>
<name>
<surname><![CDATA[Velázquez M]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridophyta]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Diego]]></surname>
<given-names><![CDATA[Pérez N]]></given-names>
</name>
<name>
<surname><![CDATA[Fonseca]]></surname>
<given-names><![CDATA[R. Ma]]></given-names>
</name>
</person-group>
<source><![CDATA[Estudios florísticos en Guerrero 9]]></source>
<year>1998</year>
<page-range>94</page-range><publisher-loc><![CDATA[México, D.F ]]></publisher-loc>
<publisher-name><![CDATA[Facultad de Ciencias, Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maxon]]></surname>
<given-names><![CDATA[W. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies of the certain Mexican and Guatemalan species of Polypodium]]></article-title>
<source><![CDATA[Contr. U.S. Natl. Herb]]></source>
<year>1903</year>
<volume>8</volume>
<page-range>271-80</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maxon]]></surname>
<given-names><![CDATA[W. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodium furfuraceum and related species]]></article-title>
<source><![CDATA[Contr. U.S. Natl. Herb]]></source>
<year>1916</year>
<volume>17</volume>
<page-range>557-79</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maxon]]></surname>
<given-names><![CDATA[W. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodium squamatum and its allies]]></article-title>
<source><![CDATA[Contr. U.S. Natl. Herb]]></source>
<year>1916</year>
<volume>17</volume>
<page-range>579-96</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maxon]]></surname>
<given-names><![CDATA[W. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies of tropical American ferns: No 6]]></article-title>
<source><![CDATA[Contr. U.S. Natl. Herb]]></source>
<year>1916</year>
<volume>17</volume>
<page-range>541-608</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mickel]]></surname>
<given-names><![CDATA[J. T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Liebmann´s Mexican ferns: His itinerary, a translation of his "Mexico Bregne", and a reprinting of the original work]]></article-title>
<source><![CDATA[Contr. New York Bot. Gard]]></source>
<year>1987</year>
<volume>19</volume>
<page-range>1-174</page-range></nlm-citation>
</ref>
<ref id="B33">
<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[Beitel]]></surname>
<given-names><![CDATA[J. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Notes on xPleopodium and Pleopeltis in tropical America]]></article-title>
<source><![CDATA[Amer. Fern J]]></source>
<year>1987</year>
<volume>77</volume>
<page-range>16-27</page-range></nlm-citation>
</ref>
<ref id="B34">
<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[Beitel]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridophyte flora of Oaxaca, Mexico]]></article-title>
<source><![CDATA[Mem. New York Bot. Gard]]></source>
<year>1988</year>
<volume>46</volume>
<page-range>1-568</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mickel]]></surname>
<given-names><![CDATA[J. T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridophytes]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[McVaugh]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Anderson]]></surname>
<given-names><![CDATA[W. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Novo-Galiciana]]></surname>
<given-names><![CDATA[Flora]]></given-names>
</name>
</person-group>
<source><![CDATA[A descriptive account of the vascular plants of western Mexico]]></source>
<year>1992</year>
<volume>17</volume>
<page-range>120-467</page-range><publisher-name><![CDATA[Univ. Michigan Herb. Ann Arbor]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moran]]></surname>
<given-names><![CDATA[R. C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodium]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Moran]]></surname>
<given-names><![CDATA[R. C]]></given-names>
</name>
<name>
<surname><![CDATA[Riba]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Psilotaceae a Salviniaceae. Flora Mesoamericana]]></source>
<year>1995</year>
<volume>1</volume>
<page-range>349-65</page-range><publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Missouri Botanical Garden y The Natural History Museum]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neuroth]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biosystematik und Evolution des Polypodium vulgare-Komplexes (Polypodiaceae, Pteridophyta)]]></article-title>
<source><![CDATA[Dissert. Bot]]></source>
<year>1996</year>
<volume>256</volume>
<page-range>1-209</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Palacios Rios]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[Pteridofitas del estado de Veracruz, México]]></source>
<year>1995</year>
<page-range>362</page-range><publisher-loc><![CDATA[México, D. F ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pichi-Sermolli]]></surname>
<given-names><![CDATA[R. E. G]]></given-names>
</name>
<name>
<surname><![CDATA[Ballard]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Holttum]]></surname>
<given-names><![CDATA[R. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ito]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Index filicum: Supplementum quartum (pro annis 1934-1960)]]></source>
<year>1965</year>
<page-range>226-51</page-range><publisher-loc><![CDATA[Utrecht ]]></publisher-loc>
<publisher-name><![CDATA[International Association for Plant Taxonomy]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Price]]></surname>
<given-names><![CDATA[M. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pecluma, a new tropical American fern genus]]></article-title>
<source><![CDATA[Amer. Fern J]]></source>
<year>1983</year>
<volume>73</volume>
<page-range>109-16</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Riba]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Pacheco]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Valdés]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandoval]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridoflora del estado de Morelos. Lista de familias, géneros y especies]]></article-title>
<source><![CDATA[Acta Bot. Mex]]></source>
<year>1996</year>
<volume>37</volume>
<page-range>45-65</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rödl-Linder]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A monograph of the fern genus Goniophlebium (Polypodiaceae)]]></article-title>
<source><![CDATA[Blumea]]></source>
<year>1990</year>
<volume>34</volume>
<page-range>277-423</page-range></nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[A. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New taxa and combinations of pteridophytes from Chiapas, Mexico]]></article-title>
<source><![CDATA[Amer. Fern J]]></source>
<year>1980</year>
<volume>70</volume>
<page-range>15-27</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[A. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridophytes]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Breedlove]]></surname>
<given-names><![CDATA[D. E]]></given-names>
</name>
</person-group>
<source><![CDATA[Flora of Chiapas]]></source>
<year>1981</year>
<volume>2</volume>
<page-range>130</page-range><publisher-loc><![CDATA[San Francisco ]]></publisher-loc>
<publisher-name><![CDATA[California Academy of Sciences]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stolze]]></surname>
<given-names><![CDATA[R. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ferns and fern allies of Guatemala. Part II: Polypodiaceae]]></article-title>
<source><![CDATA[Fieldiana, Bot]]></source>
<year>1981</year>
<volume>6</volume>
<page-range>1-522</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tejero-Díez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<source><![CDATA[Pteridoflora del occidente del estado de México, México]]></source>
<year>1998</year>
<page-range>142</page-range><publisher-loc><![CDATA[México, D. F ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México]]></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>
</person-group>
<source><![CDATA[Ferns and allied plants, with special reference to tropical America]]></source>
<year>1982</year>
<publisher-loc><![CDATA[Nueva York ]]></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[Tryon]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
<name>
<surname><![CDATA[Stolze]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pteridophyta of Peru. Part V. 18. Aspleniaceae - 21. Polypodiaceae]]></article-title>
<source><![CDATA[Fieldiana, Bot]]></source>
<year>1993</year>
<volume>32</volume>
<page-range>1-90</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wagner]]></surname>
<given-names><![CDATA[W. H]]></given-names>
</name>
<name>
<surname><![CDATA[Wagner]]></surname>
<given-names><![CDATA[F. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A hybrid polypody from the New World tropics]]></article-title>
<source><![CDATA[Fern Gaz]]></source>
<year>1975</year>
<volume>11</volume>
<page-range>125-35</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weatherby]]></surname>
<given-names><![CDATA[C. A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The group of Polypodium lanceolatum in North America]]></article-title>
<source><![CDATA[Contr. Gray Herb]]></source>
<year>1922</year>
<volume>65</volume>
<page-range>3-14</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weatherby]]></surname>
<given-names><![CDATA[C. A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The group of Polypodium polypodioides]]></article-title>
<source><![CDATA[Contr. Gray Herb]]></source>
<year>1939</year>
<volume>124</volume>
<page-range>22-35</page-range></nlm-citation>
</ref>
<ref id="B52">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weatherby]]></surname>
<given-names><![CDATA[C. A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypodium lepidopteris and its relatives in Brazil]]></article-title>
<source><![CDATA[Contr. Gray Herb]]></source>
<year>1947</year>
<volume>165</volume>
<page-range>76-82</page-range></nlm-citation>
</ref>
<ref id="B53">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wiggins]]></surname>
<given-names><![CDATA[I. L]]></given-names>
</name>
</person-group>
<source><![CDATA[Flora of Baja California]]></source>
<year>1980</year>
<page-range>1025</page-range><publisher-loc><![CDATA[Stanford ]]></publisher-loc>
<publisher-name><![CDATA[Stanford University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B54">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Windham]]></surname>
<given-names><![CDATA[M. D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New taxa and nomenclatural changes in the North American fern flora]]></article-title>
<source><![CDATA[Contr. Univ. Michigan Herb]]></source>
<year>1993</year>
<volume>19</volume>
<page-range>31-61</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
