Plants forming small clumps, with knotty rhizomes less than 2 mm thick. Basal rosettes well-differentiated; sheaths pubescent; blades ovate to lanceolate, dark green. Culms 25-75 cm, initially erect, often sprawling in the fall, nodes densely retrorsely bearded; internodes glabrous, or pilose with papillose-based hairs; fall phase branching from the midculm nodes, branches nearly erect, sparsely rebranching, blades and secondary panicles only slightly reduced. Cauline leaves 4-6, often with a transitional leaf above the basal rosette; sheaths not overlapping, bases puberulent to retrorsely pilose, margins ciliate, collars pubescent; ligules 0.4-0.9 mm, membranous, ciliate, cilia longer than the membranous portion; blades 3-6 times longer than wide, 15-40 mm wide, ovate-lanceolate, glabrous, puberulent, or pilose, with 11-15 major veins and 40-120 minor veins, bases cordate, margins with papillose-based cilia. Panicles 4-12 cm long, 4-12 cm wide, about as long as wide when fully expanded, partially included to tardily exserted, with 16-60 spikelets. Spikelets 3.8-5.2 mm long, 1.7-2.2 mm wide, narrowly ellipsoid, pubescent or puberulent. Lower glumes 1/3-1/2 as long as the spikelets, narrowly triangular; upper glumes shorter than the spikelets; lower florets usually staminate; upper florets pointed, with a minute tuft of hairs. 2n = 18, 36.

Dichanthelium boscii usually grows in semi-open areas in dry oak-hickory woods of the eastern United States. The primary panicles are open-pollinated and are produced from late April through June (and sometimes again in the fall); the secondary panicles are partly open-pollinated, and are produced from July through September.

An infrequent species in the southern half of the state, where it is found in dry woodland, associated with black and white oak and white oak and hickory.

Culms clustered, erect or ascending, often somewhat geniculate, 3-7 dm, glabrous to puberulent, sparsely to usually densely retrorse-bearded at the nodes; sheaths ciliate, pubescent at the top, glabrous to softly villous on the back; blades lanceolate, spreading, ciliate toward the cordate base, glabrous to soft-hairy on both sides, the larger ones 6-12 cm נ15-30 mm, the lateral veins differentiated into 2 types as in no. 39 [Panicum clandestinum L.]; primary panicle usually sessile or partly included, or eventually exsert, 5-10 cm, ovoid with a few ascending or spreading branches, relatively few-fld; spikelets oblong-obovoid, sparsely hairy, usually papillose, 3.8-5.2 mm; first glume narrowly obovoid, acute, ca half as long; second glume slightly shorter than the sterile lemma; autumnal phase sparsely branched from the middle nodes, the blades half as large, the panicles much reduced, partly included; 2n=18, 36. Woods; Mass. to Ill. and Mo., s. to Fla. and Tex. (Dichanthelium b.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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