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pitted beardgrass

Habit 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.

Bothriochloa pertusa

Distribution
from FNA
FL; LA; MD; MS; TX; HI; PR; Virgin Islands
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 25, p. 646.
Parent taxa Poaceae > subfam. Panicoideae > tribe Andropogoneae > Bothriochloa
Sibling taxa
B. alta, B. barbinodis, B. bladhii, B. edwardsiana, B. exaristata, B. hybrida, B. ischaemum, B. laguroides, B. longipaniculata, B. springfieldii, B. wrightii
Synonyms Andropogon pertusus
Name authority (L.) A. Camus
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