O Gênero CENCHRUS L. no Brasil (Gramineae: Panicoideae)

Abstract

O geneno Cenchrus L.está representado no Brasil por 7 espécies: C. browniiRoem. &Schult., C. ciliarisL., C. echinatusl., C. myosuroidesH.B.K., C. pauciflorusBenth., C. setigerusVahl e C. tribuloides L..São apresentadas a história do gênero , sua circunscrição e descrição, como também chave pana as espécies,distribuição e algumas observações ecológicas. As variedades C. myosuroiesvor. longisetusCaro & Sanchez e C. pauciflorusvor. muricatusCaro & Sanchez foram colocadas na sinonímia de C. myosuroidese C. pauciflorus, respectivamente.

Phylogenetic studies favour the unification of Pennisetum, Cenchrus and Odontelytrum (Poaceae): a combined nuclear, plastid and morphological analysis, and nomenclatural combinations in Cenchrus

“…DeLisle, 1963;Türpe, 1983;Clayton and Renvoize, 1986;Crins, 1991;Watson and Dallwitz, 1992). Some species of The degree of fusion of the bristles is commonly used to separate these genera (Pilger, 1940;DeLisle, 1963;Clayton, 1972Clayton, , 1989Renvoize, 1982, 1986;Filgueiras, 1984;Watson and Dallwitz, 1992). In most New World species of Cenchrus the degree of fusion is substantial, although there are several Old World species in which this distinction is less obvious (Crins, 1991).…”

Poaceae: an overview with reference to Brazil

“…Several genera revisions for Brazil have already been published (Sendulsky & Soderstrom 1984;Filgueiras 1984Filgueiras , 1989Boechat & Longhi-Wagner 1995, 2001Longhi-Wagner 1999;Oliveira & Valls 2002, Guglieri et al 2006bZanin & Longhi-Wagner 2006). Due to the continental dimensions of Brazil, revisions comprising the whole country are frequently hindered by the difficulty of collecting with the necessary intensity.…”