Pennisetum alopecuroides |
Pennisetum clandestinum |
|
---|---|---|
Chinese Fountaingrass, foxtail Fountaingrass |
kikuyu grass |
|
Habit | Plants perennial; cespitose. | Plants perennial; rhizomatous and stoloniferous. |
Culms | 30-100 cm, erect; nodes glabrous. |
3-45 cm, decumbent, highly branching; nodes glabrous. |
Sheaths | glabrous, margins ciliate; ligules 0.2-0.5 mm, membranous, ciliate; blades (10)30-60 cm long, 2-8(12) mm wide, flat to folded, glabrous, margins ciliate basally. |
glabrous or pubescent; ligules 1.3-2.2 mm; blades 1-15 cm long, 1-6 mm wide, flat or folded, glabrous or pubescent. |
Panicles | all terminal, 6-20 cm long, 20-53 mm wide, fully exerted from the sheaths, erect, green to brown, deep purple, or stramineous to creamy-white; rachises terete, with pubescent hairs. |
2-2.7 cm, axillary, concealed in the sheaths; rachises flat, glabrous or scabrous. |
Spikelets | 5.5-8.4 mm, sessile or subsessile, glabrous; pedicels to 0.1 mm; lower glumes 0.2-1.4 mm, veinless; upper glumes 2-4.9 mm, to 1/2 as long as the spikelet, 1-5-veined, acute to broadly acute; lower florets sterile; lower lemmas 4.9-8.1 mm, 7-9(10)-veined; lower paleas absent; upper lemmas 5.2-7.6 mm, 5-7-veined, acuminate; anthers 3, 3-4.5 mm. |
10-22 mm, sessile or pedicellate, pedicels to 0.2 mm; lower glumes usually absent, sometimes to 0.5 mm, veinless; upper glumes 0-1.3(3.5) mm, veinless; lower florets sterile; lower lemmas 10-22 mm, 9-13-veined; lower paleas usually absent; upper lemmas 10-22 mm, 8-12-veined; upper paleas 2-7-veined; anthers 4.7-7 mm, long-exserted from the florets at anthesis. |
Fascicles | 9-16 per cm; fascicle axes 1.5-5.6 mm, with a stipelike base of 1-5.6 mm and 1(2) spikelet(s); outer bristles 13-19, 0.8-15.6 mm; inner bristles 7-10, 11.2-30 mm, scabrous; primary bristles 26.7-35 mm, scabrous, usually not noticeably longer than the other bristles. |
1-6; axes to 0.5 mm, with 1-2 spikelets; outer and inner bristles alike, 6-15, 0.5-10.9 mm; primary bristles 10-14 mm, usually not noticeably longer than the other bristles. |
2n | = 18. |
= 36. |
Pennisetum alopecuroides |
Pennisetum clandestinum |
|
Distribution |
AR; IL; NC; NY; OH; PA
|
CA; HI; PR; Virgin Islands
|
Discussion | Pennisetum alopecuroides is native to southeast Asia. It is frequently grown as an ornamental in the Flora region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Pennisetum clandestinum is native to Africa. It now grows in many parts of the world, often as a forage or lawn grass. The U.S. Department of Agriculture considers it a noxious weed. In parts of the Flora region, it is well-established in lawns. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Pennisetum | Poaceae > subfam. Panicoideae > tribe Paniceae > Pennisetum |
Sibling taxa | ||
Name authority | (L.) Spreng. | Hochst. ex Chiov. |
Web links |