Dichanthium aristatum

(Poir.) C.E. Hubb.
Common names: Awned dichanthium
Introduced
Treatment appears in FNA Volume 25. Treatment on page 638.

Plants perennial; stoloniferous, stolons often 2 m or longer. Culms 70-100 cm, decumbent, erect portions generally about 35 cm, pubescent beneath the inflorescences; nodes glabrous or densely short-pubescent. Sheaths glabrous; ligules 1-1.3 mm; blades 6-25 cm long, 3-6 mm wide, glabrous or hispid. Rames (2) 3-5 (8), 4-7 cm, subdigitate, erect to divergent, bases pilose, without spikelets; internodes pilose. Sessile spikelets 4-5 mm; lower glumes more or less obovate, often involute, margins ciliate basally, keels winged distally, apices obtuse; awns 1.5-2.5 cm, twice-geniculate. Pedicellate spikelets 4-5 mm, usually staminate. 2n = 20.

Distribution

Puerto Rico, Pacific Islands (Hawaii), Fla., Tex., La.

Discussion

Dichanthium aristatum was introduced to the Americas from southern Asia. It is sometimes used as a lawn grass in Texas, Louisiana, and Florida.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Dichanthium aristatum"
anatomy +  and kranz +
Mary E. Barkworth +
(Poir.) C.E. Hubb. +
1 (?) +  and 3 (?) +
2 times-geniculate +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
keeled +  and rounded +
staminate +  and homomorphic +
sterile +  and homogamous +
subdigitate +
8 (?) +  and 2 (?) +
intravaginal +, extravaginal +, branching +  and basal +
3 +  and 5 +
swelling +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
pseudopetiolate +
non-radiate +  and radiate +
well-developed +
6 cm60 mm <br />0.06 m <br /> (25 cm250 mm <br />0.25 m <br />) +
hispid +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
reduced +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spikelike +
Awned dichanthium +
purple +  and reddish +
ascending +  and erect +
70 cm700 mm <br />0.7 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
Puerto Rico +, Pacific Islands (Hawaii) +, Fla. +, Tex. +  and La. +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
compressed +  and rounded +
unequal +
terete;slightly flattened +
uncinate +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
solid +  and hollow +
photosynthetic +
aromatic +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
membranous +
inconspicuous +
complex +  and simple +
concealed +  and prominent +
short-pubescent +  and glabrous +
pedicellate +
heterogamous +  and homogamous +
flattened +  and terete to somewhat +
dry +  and fleshy +
35 cm350 mm <br />0.35 m <br /> (?) +
elongate +
subdigitate +  and digitate +
Introduced +
staminate +, pedicellate +  and sessile +
2 +, 1 +  and many +
sterile +  and bisexual +
compressed +
usually smaller +  and reduced +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 +  and 3 +
extensive +
2 cm20 mm <br />0.02 m <br /> (?) +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Dichanthium aristatum +
Dichanthium +
species +
membranous +
sessile-pedicellate +
bisexual +  and sterile +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +