Dichanthelium sect. Angustifolia

Plants grayish-green, densely cespitose, with caudices. Basal rosettes sometimes poorly differentiated. Culms 15-75 cm, erect; fall phase erect or spreading, extensively branched from the mid- and upper culm nodes, secondary panicles and blades of the fascicles much reduced. Cauline leaves 3-7; sheaths glabrous, pilose, or villous, pubescence sometimes sparse; ligules 0.5-2 mm, of hairs, sometimes with a pseudoligule of adjacent longer hairs; blades narrow, stiffly ascending to erect, lower blades widest, transitional to the rosette blades, often longitudinally wrinkled, mid-culm blades generally 16-25 times longer than wide, with prominent raised veins, blades of the flag leaves much reduced, often involute. Primary panicles usually long-exserted. Spikelets ellipsoid to obovoid, narrow to attenuate basally, biconvex in side view. Lower glumes thin, obtuse, weakly veined, somewhat remote and clasping at the base; upper glumes with 5-9 prominent veins. Upper florets blunt to apiculate.

Discussion

Dichanthelium sect. Angustifolia grows from the southeastern United States through Central America and the West Indies to northern South America.

Selected References

None.

Lower Taxa

Dichanthelium aciculare, Dichanthelium consanguineum