The purpose of this catalogue was to combine the available data from publications, theses, databases, and herbarium specimens from around 120 Herbaria, and colections sampled in Brazilian vegetation during the last 15 years to produce the most complete list, as possible as, of Cyperaceae species for Brazil. We catalogued ca. 1,700 names for 678 species in 42 genera occurring in Brazil. These values represent ca. 15 percent of the species and 40 percent of the genera found in the world. Both subfamilies of Cyperaceae are found in Brazil with Cyperoideae being the most diverse at both generic and specific levels. Although lower species were recorded for the tribes Cryptangieae, Sclerieae, and Trilepideae, these tribes represent a much higher percentage of the world's totals for genera and species. The most diverse genera are Rhynchospora (157 spp.), Cyperus (101 spp.), Scleria (82 spp.) and Eleocharis (69 spp.). Fifteen genera have one species in Brazil, although five of them are monospecific. The most species-rich regions in Brazil are the North and Southeast. There are no genera endemic to Brazil. There are, however, around 200 endemic species, of which 40 are in the genus Rhynchospora. Taxonomic and nomenclatural problems found are pointed under the species. For each catalogued species, the principal synonyms, bibliographic references, distribution within Brazil's five regions, vegetation type, and citation of selected material examined are provided.

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Cyperaceae possesses both non-Kranz and Kranz species, with four subtypes that differ in the number and continuity of the bundle sheaths and by presence of chloroplasts. The ontogeny of the bundle sheaths of leaves and scapes of Cyperaceae species was studied to determine primary homologies and standardise the terminology used for its description. Two non-Kranz species and 11 Kranz species from different subtypes were studied. The non-Kranz species have two bundle sheaths, with the outer one originating from the ground meristem (endodermis) and the inner one from the procambium (pericycle). Kranz species of the chlorocyperoid and eleocharoid subtypes possess two sheaths derived from the procambium (biseriate pericycle). Kranz species of the rhynchosporoid subtype have only one bundle sheath, which develops from the procambium (pericycle). Kranz species of the fimbristyloid subtype possess three bundle sheaths; the outer one originates from the ground meristem (endodermis), whereas the middle and inner ones develop from the procambium (biseriate pericycle). The outer bundle sheaths of non-Kranz and Kranz fimbristyloid species are homologues. The inner bundle sheath in non-Kranz species, the outer sheath in Kranz chlorocyperoid and eleocharoid species, the middle one in Kranz fimbristyloid species and the single sheath in Kranz rhynchosporoid species are also homologues.

RESUMO -(Anatomia e ultra-estrutura foliar de Cyperus maritimus Poir. (Cyperaceae): estratégias adaptativas ao ambiente de dunas litorâneas). Foram analisados aspectos anatômicos e ultra-estruturais foliares de Cyperus maritimus Poir. visando identificar caracteres adaptativos ao ambiente de dunas litorâneas. Para isto, indivíduos ocorrentes nas dunas da Praia de Pipa, Rio Grande do Norte, Brasil, tiveram as folhas submetidas a diferentes análises: microscopia de luz, eletrônica de varredura e de transmissão. Em vista frontal, a epiderme possui tricomas unicelulares, corpos de sílica, cutícula estriada e depósitos de cera. Em secção transversal, a epiderme é unisseriada com parede periclinal externa espessa. Os estômatos são paracíticos, podendo o ostíolo estar obstruído por cera. Abaixo da face adaxial observa-se o parênquima aqüífero. Os feixes vasculares ocorrem em múltiplas fileiras, sendo as periféricas compostas por feixes de diâmetro menor que os feixes da fileira central. Foram observados caracteres relacionados à síndrome Kranz do tipo clorociperóide. Aspectos ultra-estruturais, como cloroplastos presentes na bainha do feixe, esses sem grana evidentes, entre outras características, reforçam a possível ocorrência da via C 4 nesta espécie. É a primeira citação para o gênero Cyperus de cloroplasto nas celulas do tecido vascular. Neste trabalho foi possível observar vários caracteres importantes para plantas submetidas a estresse hídrico e salino, como: cera, células epidérmicas com parede periclinal externa espessada, parênquima aqüífero e síndrome Kranz. Palavras-chave:Cyperus, Kranz, anatomia, ultra-estrutura, salinidade ABSTRACT -(Leaf anatomy and ultrastructure of Cyperus maritimus Poir. (Cyperaceae): adaptive strategies for coastal dune environment). Anatomical and ultrastructural aspects of Cyperus maritimus Poir. were analyzed with the aim of identifying adaptive features for the dune environment. Collections were made at Pipa beach, Rio Grande do Norte, Brazil. Leaves were submitted to different analyses: light microscopy, scanning and transmission electron microscopy. In frontal view, the epidermis has unicellular trichomes, silica bodies, a striate cuticle and wax deposits. In transverse section, the epidermis is uniseriate with thickened outer periclinal walls. The stomata are paracitic and the pore sometimes obstructed by wax. Under the adaxial epidermis, there are several layers of aqueous parenchyma. The vascular bundles occur in multiple rows, the peripheral row having bundles with narrower diameters than the central row. Characters related to Kranz syndrome of the chlorocyperoid type were observed. Ultrastructural features support a possible C 4 pathway in this species. This work is the first citation of chloroplasts in the cells of the vascular system for the genus. In this study, it was possible to observe several important features of plants submitted to water and salt stress, such as: wax, thickened outer periclinal walls of the epidermal cells, aqueous parenchyma and Kranz syndrome.

Seventy-three species from 17 genera of Cyperaceae were studied with the aim of identifying and confirming those species with Kranz anatomy. Among the species studied, 36 exhibited Kranz anatomy; 37 did not. Of the four types of Kranz anatomy recognized in Cyperaceae, three were encountered: the chlorocyperoid type in the genera Cyperus, Kyllinga, Lipocarpha, Pycreus, and Remirea; the fimbristyloid type in Abildgaardia, Bulbostylis, and Fimbristylis; and the rhynchosporoid type in Rhynchospora. Non-Kranz anatomy was confirmed in species of the following genera: Becquerelia, Calyptrocarya, Cyperus, Diplacrum, Eleocharis, Fuirena, Hypolytrum, Pleurostachys, Rhynchospora, and Scleria. The anatomical data obtained corroborate earlier studies of species of Cyperaceae as to the presence of Kranz anatomy and the anatomical types in several species and the "Kranzkette" pattern in Cyperus ligularis and Cyperus pohlli.Resumo. Setenta e três espécies pertencentes a 17 gêneros de Cyperaceae foram estudadas com o objetivo de identificar e confirmar espécies com anatomia Kranz. Entre as espécies estudadas, 36 exibem anatomia Kranz e 37 não. Dos quatro tipos de anatomia Kranz reconhecidos em Cyperaceae, três foram encontrados: o tipo clorociperóide nos gêneros Cyperus, Kyllinga, Lipocarpha, Pycreus e Remirea; o fimbristilóide em Abildgaardia, Bulbostylis e Fimbristylis; e o tipo rincosporóide em Rhynchospora. Anatomia não Kranz foi confirmada em espécies dos seguintes gên-eros: Becquerelia, Calyptrocarya, Cyperus, Diplacrum, Eleocharis, Fuirena, Hypolytrum, Pleurostachys, Rhynchospora e Scleria. Os dados anatômicos obtidos corroboram recentes estudos para espécies de Cyperaceae, como a presença da anatomia Kranz e do tipo anatômico em várias espécies e o padrão "Kranzkette" em Cyperus ligularis e Cyperus pohlli.