Andropogon bicornis

L.
Common names: Barbas de indio
Treatment appears in FNA Volume 25. Treatment on page 655.

Plants densely cespitose, upper portion dense, obovate to obpyramidal. Culms 60-250 cm; internodes not glaucous. Sheaths smooth; ligules 0.6-1 mm; blades 20-70 cm long, 2-7 mm wide, usually glabrous or scabrous on the margins. Inflorescence units 50-500; subtending sheaths 2.5-4.5 cm long, 2-3 mm wide; peduncles 20-70 mm, with 2 (3) rames; rames 2-4 cm, exerted at maturity; internodes filiform, densely and evenly pubescent, hairs 3-9 mm. Sessile spikelets 3-4 mm; unawned; callus hairs 0.5-1 mm; keels of lower glumes scabrous above the midpoint; anthers 3, 1-1.4 mm. Pedicellate spikelets mostly vestigial or absent, 1-2 of those in the terminal units on each rame 3-5 mm and staminate. 2n = 60, 120.

Distribution

Puerto Rico, Virgin Islands, Fla.

Discussion

Andropogon bicornis is a widespread species of the Western Hemisphere tropics. It was collected in the early 1960s in Dade County, Florida, near the track of a major hurricane, but may not be established in the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."elongated" is not a number.

... more about "Andropogon bicornis"
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
anatomy +  and kranz +
Christopher S. Campbell +
1 (?) +  and 3 (?) +
terete +  and flattened +
slender +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
pseudopetiolate +
non-radiate +  and radiate +
well-developed +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
scabrous +  and glabrous +
convolute +, folded +, flat +  and linear +
reduced +
2mm;7mm +
spikelike +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbas de indio +
much-branched +
purple +  and reddish +
60 cm600 mm <br />0.6 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
not woody +
Puerto Rico +, Virgin Islands +  and Fla. +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
compressed +  and rounded +
unequal +
uncinate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
2.5 cm25 mm <br />0.025 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with inconspicuous veins +  and veined +
fimbriate +  and cupulate +
solid +  and hollow +
pubescent +  and not glaucous +
photosynthetic +
not aromatic +
coriaceous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
inconspicuous +
2-9-veined +  and veined +
concave +, flat +  and 2-keeled +
complex +  and simple +
concealed +  and prominent +
sessile-pedicellate +
heterogamous +
not fused +
3 cm30 mm <br />0.03 m <br /> (?) +
2 cm20 mm <br />0.02 m <br /> (?) +  and 4 cm40 mm <br />0.04 m <br /> (?) +
dry +  and fleshy +
elongate +
staminate +, pedicellate +  and sessile +
in triplets +  and paired +
well-developed +
usually smaller +  and reduced +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Gramineae +
Andropogon bicornis +
Andropogon sect. Leptopogon +
species +
membranous +
sessile-pedicellate +
inconspicuous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +