Piperales compreende cinco famílias, cerca de 25 gêneros e 4000 espécies, das quais apenas Aristolochiaceae e Piperaceae estão presentes no Nordeste do Brasil. Este trabalho é parte da série de monografias taxonômicas de famílias encontradas nos fragmentos de Floresta Atlântica da Usina São José, Igarassu, Pernambuco, Brasil. Coletas foram realizadas em nove fragmentos, entre os anos de 2007 e 2011, além de visita a herbários. Foram reconhecidos nove táxons: Aristolochia labiata Willd., A. papillaris Mast. (Aristolochiaceae); Peperomia magnoliifolia (Jacq.) A. Dietr., P. pellucida (L.) Kunth., Piper arboreum var. hirtellum Yunck., P. caldense C. DC., P. hispidum Sw., P. hostmannianum (Miq.) C.DC. e P. marginatum Jacq. (Piperaceae). São apresentados chave de identificação, descrições, comentários e ilustrações. Piper hostmannianum tem aqui seu primeiro registro para o Nordeste.
ResumoO objetivo deste trabalho é o estudo taxonômico das espécies de Burmanniaceae e Gentianaceae encontradas na Usina São José. As coletas foram realizadas em seis fragmentos florestais entre 2007 e 2009, além do levantamento dos herbários locais. Foram encontradas três espécies de Burmanniaceae: Apteria aphylla, Gymnosiphon divaricatus e G. sphaerocarpus; e quatro de Gentianaceae: Coutoubea spicata, Voyria caerulea, V. obconica e V. tenella. Apenas C. spicata é autótrofa; as demais são mico-heterótrofas. As espécies foram encontradas apenas nos maiores remanescentes e as espécies mico-heterótrofas mostraram-se potenciais bioindicadoras de ambientes conservados. Gymnosiphon sphaerocarpus constitui o primeiro registro para o Brasil. Palavras-chave: Mata Atlântica, mico-heterótrofas, Nordeste do Brasil, saprófitas. ABSTRACTA taxonomic study was made of Burmanniaceae and Gentianaceae from the Usina São José. Collecting was done in six forest fragments, from 2007 to 2009; vouchers from local herbaria were also studied. Three species of Burmanniaceae (Apteria aphylla, Gymnosiphon divaricatus, and G. sphaerocarpus) and four of Gentianaceae (Coutoubea spicata, Voyria caerulea, V. obconica, and V. tenella) were found. Only C. spicata is autotrophic, the others are myco-heterotrophic. Specimens were found only in the largest fragments and the myco-heterotrophs can be considered potential bioindicators of preserved environments. Gymnosiphon sphaerocarpus is recorded for the first time in Brazil.
A list of angiosperms from Serra do Urubu, a montane forest area in the state of Pernambuco, is here provided. Based on 14 botanical expeditions and material deposited in herbaria, 832 taxa belonging to 442 genera and 118 families have been recorded in this area, with about 90% of the taxa identified to species level. The richest families are Orchidaceae (86 spp.), Fabaceae (51 spp.) and Rubiaceae (42 spp.). Miconia and Solanum (14 spp. each), and Psychotria (13 spp.) are the richest genera. About 15% of the recorded species are endemic to the Atlantic Forest, and another 10% are disjunct between this area and the Amazon Rainforest. The results indicate that the Serra do Urubu is one of the richest areas in terms of number of species of the Atlantic Forest in the Northeast, and corroborates the Pernambuco Endemism Center.
ResumoPiperaceae possui cinco gêneros, aproximadamente 3.600 espécies com distribuição pantropical, e no Brasil a família está representada por cerca de 450 táxons. Portanto, o objetivo desta pesquisa foi realizar o estudo taxonômico das espécies que ocorrem no Parque Nacional do Viruá, estado de Roraima. AbstractPiperaceae comprises five genera, approximately 3.600 species with a pantropical distribution, and in Brazil this family is represented by about 450 taxa. Therefore, the aim of this research was do the taxonomic treatment of species that occur in Parque Nacional do Viruá, state of Roraima. Field trips were conducted between September 2011 and August 2012, and vouchers from herbaria were also analyzed. We found 16 taxa, 12 of the genus Piper L. and four of Peperomia Ruiz & Pav. Eleven taxa are new records for the state, and one is a new record for Brazil. Most species were collected in the lowlands forests, but some were found in floodplain forests.
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