SciELO - Scientific Electronic Library Online

vol.90 issue4Floral morphology and embryology of Begonia gracilis (Begoniaceae): their relevance in the monoecyNeotypification of Hechia lanata (Bromeliaceae; Hechtioideae), an endemic species from Oaxaca, México author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO


Botanical Sciences

On-line version ISSN 2007-4476Print version ISSN 2007-4298


RAMIREZ-AMEZCUA, Yocupitzia; TELLEZ, Oswaldo  and  STEINMANN, Victor Werner. A new and noteworthy species of Dioscorea (Dioscoreaceae) from Michoacán, Mexico. Bot. sci [online]. 2012, vol.90, n.4, pp.381-384. ISSN 2007-4476.

The new species Dioscorea megaphylla (Dioscoreaceae) is described and illustrated with photographs. It is known only from the type locality, along the coastal foothills of the Sierra de Coalcomán in the municipality of Aquila, Michoacán, Mexico, where it grows in rocky canyons and hillsides with tropical subdeciduous forest at elevations of 550-600 m.As the specific epithet suggest, this species is distinctive due to the size of its leaves, and these are the largest within the genus Dioscorea and measure as much as 60 cm long and 65 cm wide. Unlike most members of the genus, flowering occurs at the end of the dry season on newly produced stems before the leaves mature. Dioscorea megaphylla belongs to sect. Macrogynodium and is closely related to D. nelsonii and D. carpomaculata.

Keywords : Disocorea; Mexico; section Macrogynodium.

        · abstract in Spanish     · text in English


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License