ABSTRACT
The present study aimed to investigate and analyze the floristic diversity of Dioscoreaceae from Reserva Biológica do Alto da Serra de Paranapiacaba, Santo André, in order to increase the knowledge of Dioscoreales flora of this conservation unity and of São Paulo State. The field trips were conducted from 1978 until 2014; specimens from herbaria B, BOTU, ESA, IAC, NY, R, RB, SP, SPF, and UEC were consulted. We confirmed the occurrence of eight species ofDioscorea L. from Atlantic Forest of Serra do Mar. Among them, D. sanpaulensis and D. trilinguis are already listed as endangered species in the Brazilian Flora Red Book.Dioscorea torticaulis should now be included in the book as well, as it is endemic and rare in the Reserva Biológica de Paranapiacaba. The identification key, descriptions, illustrations, taxonomic, geographic, and phenology comments are presented.
Keywords:
Atlantic Forest; climbing plants; Dioscorea; flora; Serra do Mar
