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Flora of Rio de Janeiro: Trigoniaceae

Rodriguésia

Miguel, J. R., & Guimarães, E. F. 

2020

Rodriguésia

71

The taxonomic survey of Flora of the state of Rio de Janeiro revealed the presence of two of the five genera that make up the pantropical distribution family Trigoniaceae. The present study aimed to know, publicize and characterize this representativeness in the region. As a methodology, we highlight the survey of the principal works, the examination of the collections in the Herbarium; field work in areas of occurrence for registration; identification of species using the classical methodology as well as the illustration of the typical species. The results indicated that, currently, it is a botanical entity in this state represented is by eleven taxa classified in the genus Trigoniodendron that is monotypic, arboreal, of alternating phyllotaxis; and the other taxa in Trigonia. Characterized as shrubs and lianas, with opposite filotaxia. Both (Trigoniodendron and Trigonia) inhabit the dense ombrophilous forest; the second also occupies areas of restingas and secondary formations. These results corroborate the importance of regional floras surveys for the development of plant taxonomy.

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The Liana Ecology Project is supported by Marquette University and funded in part by the National Science Foundation.