A revision of Cenchrus incl. Pennisetum (Gramineae) in Malesia with some general nomenclatural notes Author Veldkamp, J. F. Naturalis Biodiversity Center, section Botany, P. O. Box 9517, 2300 RA Leiden, The Netherlands; e-mail: jef. veldkamp @ naturalis. nl jef.veldkamp@naturalis.nl text Blumea 2014 2014-08-22 59 1 59 75 https://doi.org/10.3767/000651914x684376 journal article 10.3767/000651914X684376 2212-1676 16999789 9. Cenchrus longisetus M.C.Johnst. Cenchrus longisetus M.C.Johnst. (1963) 182. — Pennisetum villosum R.Br. ((1814) lxiii, nomen) ex Fresen. (1836) 134. — Cenchrus villosus Kuntze (1898) 347, non Spreng. (1824). — Type : Salt s.n. (holo FR;? BM). Pennisetum longistylum auct. non A.Rich. Perennials. Culms erect, not stoloniferous, rhizomatous, 0.15– 0.75 m long, nodes glabrous. Ligule a setose rim, c. 0.15 mm long, setae 0.7–1.1 mm long. Blades involute, 3.5–65 cm by 1.5–5 mm , margins scaberulous. Peduncle pilose below the panicle. Panicle exserted, many-spikeled, 4–12 cm long, common axis scaberulous to pubescent. Involucre stipitate, disarticulating at base. Bristles many, rather stiff, pilose (some outer ones excepted), unequal, 15–30 mm long, longest bristle 25–45 mm long. Spikelets 1–2 within the involucre, sessile, 8.25–11 mm long. Lower glume 0–1.35 mm long, 0–0.53 times as long as the upper glume; upper glume 1.65–4.1 mm long, 1-nerved. First lemma epaleate to paleate, male, acuminate to aristate, membranous, 7–11-nerved, glabrous, nerves scaberulous; second lemma 8.25–11 mm long, acuminate to aristate, membranous. Anthers 3.6–5 mm long, apex glabrous. Styles and stigmas more or less completely fused, apically exserted, yellowish. 2n = (18, 27) 36, 45 (54). Distribution — E Africa, Arabia, introduced elsewhere, e.g. Malesia : Java (Cibodas). Habitat — Lawns, along paths, c. 1450 m altitude in Java. Uses — Ornamental (as P. longistylum auct.), escaping. Vernacular names — Feathertop, White foxtail.