ABSTRACT Aristolochia comprises about 450 species, occurring mainly in tropical regions. Here, we record for the first time Aristolochia wankeana in Brazil, specifically in two municipalities in the state of Amazonas (Presidente Figueiredo and Rio Preto da Eva). Previously, this species had only been recorded in Guyana and French Guiana. We provide the species description based on the new records, a preliminary extinction risk assessment, photographic plates, an updated geographic distribution map, ecological comments, and an updated key for species identification of Aristolochia subser. Anthocaulicae from the Brazilian Amazon. 45 regions Here Brazil Presidente Eva. Eva . Eva) Previously Guiana records assessment plates map comments subser Amazon 4

RESUMO Aristolochia possui cerca de 450 espécies, ocorrendo principalmente em regiões tropicais. Aqui registramos pela primeira vez Aristolochia wankeana no Brasil, especificamente em dois municípios do estado do Amazonas (Presidente Figueiredo e Rio Preto da Eva). A espécie havia sido anteriormente registrada apenas na Guiana e Guiana Francesa. Neste estudo, fornecemos a descrição da espécie com base nos novos registros, a avaliação preliminar do risco de extinção, pranchas fotográficas, um mapa de distribuição geográfica atualizado, comentários ecológicos, e uma chave atualizada de identificação das espécies de Aristolochia subser. Anthocaulicae da Amazônia brasileira. 45 tropicais Brasil Presidente Eva. Eva . Eva) Francesa estudo registros extinção fotográficas atualizado ecológicos subser brasileira 4

Abstract Scaphyglottis Poepp. & Endl. (Orchidaceae) is a neotropical genus with 78 species, 14 of which are found in Brazil. Some of these taxa have an intricate taxonomy, especially due to the morphological similarity among species and the existence of species complexes. Our study aims to test if the labellum shape, the main source of species diagnostic characters, can confirm the proposed circumscription of Brazilian species of Scaphyglottis. We analyzed 136 flowers from 12 species, to which we applied 12 landmarks, using a geometric morphometrics approach. Our results show that most species can be distinguished. Most of the variation is observed in the claw and apices of labellum lobes, confirming that the labellum is important tool in taxon distinction. Species with distinctly 3-lobed labellum showed some overlap but, for these taxa, we have found distinction specially in the lateral lobes. Our study showed new morphologically variable features in Scaphyglottis that can be used in future taxonomic studies. For widely distributed species we suggest a population-level approach, as local environmental factors can impact morphology, causing expected intraspecific variation. Poepp Endl Orchidaceae (Orchidaceae 7 1 Brazil taxonomy complexes shape characters 13 landmarks approach distinguished lobes 3lobed lobed 3 but studies populationlevel population level morphology

Abstract The genus Scaphyglottis Poepp. & Endl. presents 78 species and occurs from Mexico to Brazil. Scaphyglottis punctulata (Rchb.f.) C.Schweinf. is known from various high elevation locations from Panama to Bolivia. Here, we report new records in two regions of the Brazil portion of the Guiana Shield. We provide a detailed description, photographic plates, updated distribution map, ecological and taxonomic comments for S. punctulata, and an identification key for Scaphyglottis species from the Brazilian portion of the Guiana Shield.

Resumo Este estudo apresenta o tratamento florístico das espécies de Vitaceae que ocorrem na Reserva Florestal Adolpho Ducke, Amazonas, Brasil. Coletas provenientes da Reserva Ducke foram analisadas a partir de exsicatas depositadas no herbário INPA. Foram registradas duas espécies do gênero Cissus para a reserva, Cissus erosa e C. verticillata subsp. verticillata. Apresentamos descrições das espécies, comentários taxonômicos, ilustrações, informação sobre hábitat, distribuição geográfica e uma chave de identificação para as espécies.

Abstract This study presents the floristic treatment for the species of Vitaceae occurring in the Reserva Florestal Adolpho Ducke, Amazonas, Brazil. Collections from the Reserva Ducke were analyzed from specimens deposited at the INPA herbarium. Two species of the genus Cissus were recorded, Cissus erosa and C. verticillata subsp. verticillata. We present species descriptions, taxonomic comments, illustrations, habitat information, geographic distribution, and an identification key for the species.