Sporobolus buckleyi

Vasey
Common names: Buckley's dropseed
Treatment appears in FNA Volume 25. Treatment on page 126.

Plants perennial; cespitose, not rhizomatous. Culms 40-100 cm. Sheaths keeled and flattened below, margins occasionally hairy distally, hairs to 1.2 mm; ligules 0.2-0.4 mm; blades 12-35 cm long, 4-12 mm wide, flat, glabrous abaxially, scabridulous adaxially, margins smooth or scabridulous. Panicles 15-50 cm long, 7-22(30) cm wide, diffuse, ovate; primary branches 2-17 cm, spreading 40-100° from the rachis; secondary branches appressed to loosely spreading, without spikelets on the lower 1/4 - 1/2; pulvini glabrous; pedicels 0.2-1.2 mm, appressed, scabridulous. Spikelets 1-2 mm, purplish to brownish. Glumes unequal, narrowly lanceolate to lanceolate, membranous, prominently keeled; lower glumes 0.6-1 mm; upper glumes 1.1-1.8 mm, slightly shorter than or subequal to the lemmas; lemmas 1.2-2 mm, lanceolate, membranous, glabrous, acute; paleas 1.2-2 mm, ovate, membranous, glabrous, often splitting in two between the veins at maturity; anthers 0.2-0.4 mm, purplish. Fruits 0.6-1 mm, ovoid, slightly flattened, reddish-brown. 2n = 40.

Discussion

Sporobolus buckleyi grows between 0-150 m, in loamy soils near the margins of woods or thorn scrub, sometimes in partial sunlight. Its range extends from southeastern Texas to Belize.

Selected References

None.

Lower Taxa

None.