Flora Da Reserva Ducke, Amazonas, Brasil: Cyperaceae

Abstract

Terms which are italicised within each definition are themselves defined elsewhere in the Glossary. Acuminate. Gradually narrowed to a long fine point. Acute. Abruptly narrowed to a short point. Biconvex. Two-sided, the sides convex. Cancellate. Having the appearance of a lattice. Capitate. Head-like inflorescence, without any apparent branching. Compound. Applied to an inflorescence or partial inflorescence where there are two orders of branching, i.e. primary and secondary. Compressed-trigonous. Three-sided, but distinctly flattened and thus appearing to be two-sided. Conical. Cone-shaped, being wider at the base than the apex; here it is used as the 3-dimensional equivalent of lanceolate. Connective. Tissue connecting the pollen sacs of an anther. Sometimes it extends beyond the apex of the pollen sacs to form a prominent tip to the anther. Contraligule. Membranous, ligule-like structure at the apex of the leaf-sheath on the side of the culm facing away from the leaf-blade. Coriaceous. Having a leathery texture. Culm. Stem supporting the inflorescence. Cylindric. Cylinder-shaped. Decompound. Applied to an inflorescence or partial inflorescence where there are three or more orders of branching, i.e., primary, secondary and tertiary. Deltoid. Triangular in outline. Disk. Three-lobed structure occurring at the base of the nutlet in Scleria, Calyptrocarya and Becquerelia. In some species it may be indistinct. Filiform. Thread-like. Fimbriate. With a margin divided into a fringe. Floral bract. Membranous scale-like structure in the spicoid-type inflorescence unit each of which subtends a male flower comprising a single stamen only. The lowest two floral bracts are usually have a keel and are opposite. Globose. Rounded, resembling a ball.

Litter as a filter of emergence for herbaceous seedlings and sporophytes in central Amazonia

“…A = Litter addition, C = Control, E = Litter exclusion. Species with morphometric measurements based on INPA herbarium collections (1); on field collections at Reserva Ducke (2); and the literature: Simpson (2006) (3); Davidse et al . (2004) (4); Kennedy et al .…”

Floristic survey of herbaceous and subshrubby aquatic and palustrine angiosperms of Viruá National Park, Roraima, Brazil

“…Our identifications were based on regional floras of the Amazon and Guiana regions and specialized bibliography of each family: Core 1936, Organization for Flora Neotropica 1967- , Cook 1985, Cook and Urmi-König 1985, Kral 1988, 1992, Taylor 1989, 1991, Thomas 1992, 1997, Steyermark et al 1995 – 2005, Araújo and Longhi-Wagner 1996, Camelbeke et al 1997, Luceño et al 1997, Kral and Jansen-Jacobs 1998, Wanderley et al 2001-, Prata 2002, Gil and Bove 2004, Campbell 2005, Trevisan 2005, Simpson 2006, Thomas 2006, Rivadavia et al 2009, Souza and Giulietti 2009, Wanderley 2011, Christenhusz 2014.…”