APPENDIX. 1 06 1 



After Panicum Commonsianum, insert : 



4<>a. Panicum scoparioides Ashe. A tufted pubescent perennial. 

 Culms 3-8 dm. tall, rather slender, pubescent with ascending hairs; 

 leaves about 4; sheaths strongly papillose, ascending stiff hairs arising 

 from the papillae; blades ascending, lanceolate, 5-10 cm. long, 5-8 mm. 

 wide, glabrous on the upper surface, the lower surface more or less pubes- 

 cent with scattered spreading hairs; panicle barely exserted, 5-8 cm. 

 long, its branches ascending; spikelets about 2.5 mm. long and about 

 1.3 mm. wide, elliptic, pubescent. In dry soil, Penn. and Del. July 

 and Aug. Differs from P. Commonsianum Ashe in the barely exserted 

 panicle, the broader leaf-blades, and the papillose sheaths with spreading 

 shorter hairs. 



After Panicum Scribnerianum Nash, insert: 



43a. Panicum oligosanthes Schult. Culms tufted, erect, 3-8 dm. tall, 

 villous, finally fasciculately branched; sheaths, at least the lower ones and 

 those of the branches, papillose-hispid, ciliate on the margin; leaves erect 

 or ascending, 5-10 cm. long, 5-10 mm. wide, lanceolate, softly and densely 

 pubescent on the lower surface, the upper surface glabrous or nearly so; 

 primary panicle 6-8 cm. long, its branches ascending; spikelets about 3.5 

 mm. long and 1.7 mm. wide, oval, pubescent. In dry soil, Va. to Ga. and 

 Miss. June-Sept. Differs from P. Scribnerianum Nash by its usually 

 fewer spikelets and the softly pubescent lower surface of the leaves. 



43b. Panicum Ravenelii Scribn. & Mer. RAVENEL'S PANIC-GRASS. Culms 

 tufted, erect, 4-6 dm. tall, finally branched, papillose-hirsute below with 

 ascending hairs, the pubescence above softer; sheaths densely papillose- 

 hirsute with ascending hairs; leaves erect or ascending, glabrous above, 

 densely and softly pubescent beneath, broadly lanceolate, 8-12 cm. long, 1-2 

 cm. wide, cordate at the clasping base; panicle 8-10 cm. long, its branches 

 ascending; spikelets about 4 mm. long and 1.8 mm. wide, obovoid, pubes- 

 cent with rather weak hairs. In woods, D. C. to Fla. and La. July-Sept. 

 (P. scoparium Ell., not Lam.) Differs from P. Scribnerianum in its broader 

 leaves with the lower surface softly pubescent, and from P. oligosanthes in 

 its larger leaves and more numerous spikelets. 



P. 88, after Panicum Porterianum Nash, insert: 



5ia. Panicum pubifolium Nash. HAIRY-LEAVED PANIC-GRASS. A tufted 

 softly pubescent perennial. Culms 3-7 dm. tall, the nodes densely barbed; 

 sheaths densely pubescent and ciliate on the margins; leaves spreading or 

 ascending, ovate-lanceolate to ovate, cordate at the rounded clasping base, 

 pubescent on both surfaces with short spreading hairs, the upper primary 

 leaves 7-11 cm. long and 2-3 cm. broad, the lower smaller; primary pan- 

 icle usually but little exserted, 7-11 cm. long, its axis, as well as the 

 branches, densely pubescent with short soft spreading hairs; spikelets 

 4-5 mm. long and about 1.6 mm. broad, narrowly obovoid, the scales dis- 

 tant, strongly pubescent with long spreading hairs. In rocky woods, 

 N. Y. to Fla., Mo. and Miss. June-Sept. Differs from Panicum 

 Porterianum Nash in having the whole plant softly pubescent, especially 

 the lower surface of the leaves and the panicle. 



P. 88, after Panicum clandestinum, add: 



53. Panicum decoloratum Nash. DISCOLORED PANICUM. A more 

 or less purplish tufted perennial, glabrous or nearly so. Culms 46 dm. 

 tall, finally branched, the nodes barbed; leaves 5 or 6; sheaths loosely 

 embracing the culm, the lower and basal ones papillose-hirsute between 

 the nerves, the upper ones ciliate on the external margin; blades erect 

 or ascending, variously colored with black-purple, broadly lanceolate, 

 cordate-clasping at the base, 7-12 cm. long, 1-2 cm. wide, very rough 

 on the margins; panicle usually included at the base; spikelets 2.7 mm. 

 long and 1.3 mm. wide, elliptic, sparingly pubescent. In sandy soil, 

 Penn. May and June. Differs from its nearest relative, P. clandes- 



