Pennisetum pedicellatum Trin.
Family Poaceae, Tribe Paniceae
kyasuma grass, kyasuwa grass, hairy fountaingrass
Fascicle consists of unfused bristles; outer bristles 10–20, 1.2–2 mm long, antrorsely scabrous; inner bristles 40–90, 2.2–14 mm long, long ciliate; primary bristle solitary, conspicuously longer than other bristles, to 25 mm, long ciliate. Spikelet cluster of 1 sessile and usually at least 1 pedicellate spikelet; pedicels 0.5–3.5 mm long. Spikelets lanceolate, slightly dorsally compressed, 3.4–6 mm long, 0.6–1 mm wide; consisting of 1 fertile floret and 1 basal sterile floret. Glumes hyaline to membranous; lower glume reduced or absent; upper glume as long as spikelet. Bracts of sterile floret membranous; sterile lemma trilobed, 3.1–4.0 mm long; sterile palea 2.5–3.5 mm long. Fertile floret lanceolate, 2–3 mm long, 0.6–1 mm wide; fertile lemma and palea coriaceous, glossy, translucent, and ciliate at apices. Caryopsis lanceolate, dorsally compressed, 0.5–2.5 mm long, golden brown.
Pennisetum pedicellatum belongs to a unique section of the genus with a trilobed sterile lemma. Pennisetum pedicellatum spikelets are in clusters of 1–3(5) in the fascicle, lower glume length is at least 50% of spikelet. See
Pennisetum clandestinum Hochst. ex Chiov.
Pennisetum macrourum Trin.
Pennisetum polystachion (L.) Schultes.
tropical Africa, South Africa, Asia (India, Malaysia, Philippines, Thailand), Australia, Fiji, United States
drier sites, savannahs and woodland margins; a weed in croplands, grasslands, waste places
Pennisetum pedicellatum is an erect or geniculate annual or perennial grass, to 150 cm tall. It has been introduced as a pasture grass in Asia, Australia and the Americas. However, it invades croplands and cleared lands, and is difficult to eradicate.