Bothriochloa pertusa

(L.) A. Camus
Common names: Pitted bluestem
Introduced
Synonyms: Andropogon pertusus
Treatment appears in FNA Volume 25. Treatment on page 646.

Plants cespitose or stoloniferous. Culms to 100 cm, often decumbent or stoloniferous, freely branching; nodes bearded. Leaves mostly basal, green, sometimes glaucous; sheaths glabrous, keeled; ligules 0.7-1.5 mm; blades 3-15 cm long, 3-4 mm wide, flat, margins and ligule regions hairy. Panicles 3-5 cm, fan-shaped, often purplish; rachises 0.2-2 cm, with 3-8 branches; branches 3-4.5 cm, longer than the rachises, usually with 1 rame; rame internodes with villous margins, with 1-3 mm hairs. Sessile spikelets 3-4 mm, lanceolate; callus hairs about 1 mm; lower glumes sparsely hirtellous, with a prominent dorsal pit near the middle; awns 10-17 mm; anthers 1-1.8 mm, yellow. Pedicellate spikelets the same size as the sessile spikelets, sterile, pitted or not, occasionally with 2 pits. 2n = 40, 60.

Distribution

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

Discussion

Bothriochloa pertusa is native to the Eastern Hemisphere, and was introduced to the southern United States as a warm-season pasture grass. It now grows in disturbed, moist, grassy places and pastures in the region, at elevations of 2-200 m. It has not persisted at all locations shown on the map.

Selected References

None.

Lower Taxa

None.

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

... more about "Bothriochloa pertusa"
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
anatomy +  and kranz +
Kelly W. Allred +
(L.) A. Camus +
1 (?) +  and 3 (?) +
geniculate +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
pseudopetiolate +
non-radiate +  and radiate +
well-developed +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
usually linear +  and lanceolate occasionally ovate +
reduced +
3mm;4mm +
spikelike +
1 cm10 mm <br />0.01 m <br /> (?) +
flattened +, lanceolate +  and oblong +
Pitted bluestem +
branching +  and stoloniferous +
purple +  and reddish +
ascending +  and erect +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
Puerto Rico +, Md. +, Tex. +, La. +, Virgin Islands +, Pacific Islands (Hawaii) +, Miss. +  and Fla. +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
compressed +  and rounded +
unequal +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
axillary +  and subtending +
solid +  and hollow +
photosynthetic +
not aromatic +
coriaceous +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
villous +  and hairy +
complex +  and simple +
concealed +  and prominent +
sessile-pedicellate +
heterogamous +
fan--shaped +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
fused +  and free +
dry +  and fleshy +
elongate +
Introduced +
pedicellate +  and sessile +
in triplets +  and paired +
well-developed +
lanceolate +
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 +
Andropogon pertusus +
Bothriochloa pertusa +
Bothriochloa +
species +
membranous +
sessile-pedicellate +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +