Paspalum usteri Hack.

Camargo Keller, Victor, Lopes Pereira-Silva, Erico Fernando & Hardt, Elisa, 2021, High richness, new occurrences, and threatened species in a savanna grassland remnant in the largest Brazilian metropolis, Check List 17 (2), pp. 507-549 : 539

Paspalum usteri Hack.

Identification. Perennial rhizomatous grass, ca. 1.6 m height. Leaf-blades lanceolate, plain, apex acute, 32.0– 42.5 cm long, 1.5 cm wide, ligulate. Characterized by its pyramidal inflorescence with 25–35 alternate branches, 0.7–9.2 cm long, brownish, with scattered trichomes and paired spikelets.

Remarks. Rare species, occurring on waterlogged sites. Considered Presumably Extinct in São Paulo state.

Brazilian range. Midwest (MS state) and Southeast (except ES and RJ states) regions.

Material examined. BRAZIL – São Paulo • Franco da Rocha, Parque Estadual do Juquery ; 23°20′17″S, 046°41′40″W; 5 Sep. 2016; collection number vck4; HUFABC1889 .

Schizachyrium condensatum (Kunth) Nees Identification. Perennial tussock grass, 0.35–1.1 cm height. Leaf-blades linear, glabrous, 3–25 cm long, 0.2– 0.8 cm wide, ligulate. It is identified by its erect contracted inflorescence, 5–45 cm long, with lots of ramifications, and its sessile spikelets, awns with 8–16 mm long.

Remarks. Occurring scarcely on the native grassland but common on roadsides and colonizing disturbed sites. Brazilian range. Midwest, Northeast (BA state), South and Southeast (except ES and RJ states) regions.

Materials examined. BRAZIL – São Paulo • Franco da Rocha, Parque Estadual do Juquery ; 23°20′30″S, 046°40′36″W; 5 Mar. 2018; collection number vck216; HUFABC2058 • same collection data as for preceding; collection number vck217; HUFABC2059 .