Pennisetum orientale

Willd. ex Rich.
Common names: White fountaingrass
Treatment appears in FNA Volume 25.

Plants perennial; rhizomatous. Culms 50-200 cm, erect, pubescent beneath the panicle; nodes pubescent. Leaves green or glaucous; sheaths antrorsely scabridulous, mostly glabrous, margins ciliate; ligules 1-1.7 mm; blades 25-50 cm long, 3-9 mm wide, flat, antrorsely scabridulous, glabrous or pubescent, margins ciliate or glabrous basally, midvein not noticeably thickened. Panicles 11.5-37.3 cm long, 35-50 mm wide, fully exerted from the sheaths, erect to slightly arching, white (sometimes purplish-tinged); rachises terete, pubescent. Fascicles 5-12 per cm; fascicle axes 1-6 mm, with 1-10 spikelets; outer bristles 0-24, 0.8-9.6 mm, terete, scabrous; inner bristles 6-20, 5.6-17.5 mm, ciliate; primary bristles 12.2-23.8 mm, ciliate, noticeably longer than the other bristles. Spikelets 5.6-6.7 mm; pedicels 0.1-0.2 mm; lower glumes 1-2.2 mm, veinless; upper glumes 3.1-5.5 mm, 1-3-veined; lower florets staminate; lower lemmas 5.2-6.5 mm, 4-6-veined; lower paleas 3.8-5 mm; anthers 2.3-3 mm; upper florets not disarticulating at maturity; upper lemmas 5.2-6.2 mm, margins glabrous, 5-veined; upper paleas bifid, teeth 0.3-0.8 mm; anthers 1.9-2.9 mm. Caryopses concealed by the lemma and palea at maturity. 2n = 18, 27, 36, 45, 54.

Discussion

Pennisetum orientale is native from North Africa to India. It is grown as an ornamental in the Flora region, but has potential as a forage species.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Pennisetum orientale"
54 +, 45 +, 36 +, 27 +  and 18 +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
anatomy +  and kranz +
J.K. Wipff +
Willd. ex Rich. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
pseudopetiolate +
non-radiate +  and radiate +
25 cm250 mm <br />0.25 m <br /> (50 cm500 mm <br />0.5 m <br />) +
pubescent +  and glabrous +
scabridulous +
usually linear +  and lanceolate occasionally ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
spikelike +
reduced +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
disarticulating +
fused +  and free +
not developed +
terete +  and compressed +
sometimes longer +
White fountaingrass +
50 cm500 mm <br />0.5 m <br /> (200 cm2,000 mm <br />2 m <br />) +
not woody +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
0.56 cm5.6 mm <br />0.0056 m <br /> (1.75 cm17.5 mm <br />0.0175 m <br />) +
usually flatter and wider +
hollow +  and solid +
cauline +  and basal +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
membranous +
inconspicuous +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glabrous +  and ciliate +
complex +  and simple +
concealed +  and prominent +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.96 cm9.6 mm <br />0.0096 m <br />) +
11.5cm +  and 37.3cm +
subterranean +
erect +  and slightly arching +
1 +  and many +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
dry +  and fleshy +
long-ciliate +  and scabrous +
1.22 cm12.2 mm <br />0.0122 m <br /> (2.38 cm23.8 mm <br />0.0238 m <br />) +
scabridulous +
in triplets +  and paired +
1 +  and 10 +
unisexual +  and bisexual +
compressed +  and terete +
0.56 cm5.6 mm <br />0.0056 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Pennisetum orientale +
Pennisetum +
species +
membranous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
not disarticulating +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.62 cm6.2 mm <br />0.0062 m <br />) +
membranous +  and coriaceous +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
9 +, 8 +, 7 +  and 5 +