Floristic catalog and keys for identification of species of Cyperaceae from the States of Pemambuco and Paraiba (Northeastern Brazil)

[摘要] The present work presents the results of our studies of the familyCyperaceaein the northeastern Brazilian States of Pernambuco and Paraiba. The introduction includes a historical synopsis of previous work and summarizes the main types of vegetation found in the región. Keys for identification of the 22 genera and 127 species which comprise the catalogue are included. The species are enumerated for each genus, along with synonyms which have been employed in the región, material examined, frequency, habitat, general geographic distribution, and taxonomic observations where appropriate. More than half of the species are new records for Pernambuco and Paraiba. Two species are reported as new to science.Fuirena lainziiLuceño & M. Alves (1996) andScleria pernambucanaLuceño & M. Alves (1997). Two species are first reports from the American continent,Pycreus pumilus(L.) Nees andP. pelophilus(Ridley) C.B. Clarke, and two are first repoits for Brazil,Kyllinga nemoralis(J.R. Forster & G. Forster) Dandy ex Hutchinson & Daziel andScleria mexicana(Liebm.) Boeck. Six genera and 10 species are new citations for the northeastem región of Brazil. A lectotype forCyperus grossianusT.M. Ped. is chosen. Additionally, new localities are given for regional endemisms considered for be rare; other findings represent disjunctions of considerable biogeographical importance.

[学科分类] 植物学

[关键词] Cyperaceae;taxonomy;chorology;Brasil