APPENDIX. 1041 



P. 87, No. 38, read " scoparium Lam." instead of " viscidum Ell.", and 

 refer the latter to synonymy, to which add also " P. pubescens Lam." 



After No. 38, insert: 



38a. Panicum scabriusculum Ell. ROUGHISH PANIC-GRASS. Culms gla- 

 brous or pubescent, 8-14 dm. long, erect, finally branched; sheaths gla- 

 brous or pubescent; leaves erect or ascending, linear-lanceolate, glabrous, 

 1-2 dm. long, 8-12 mm. wide; panicle 1-2 dm. long, its branches spreading 

 or ascending; spikelets lanceolate, glabrous, 2-2.3 mm. long and I mm. 

 broad, ovate to ovate-lanceolate, acute, the nerves of the flowering scale 

 very prominent. In swampy places and ponds, Va. to Fla. and Tex. 

 May-Aug. Differs from P. scoparium Lam. in its longer and narrower 

 glabrous leaves and glabrous spikelets. 



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. 90, before Chaetochlpa occidentalis Nash, insert: 



2a. Chaetochloa imberbis (Poir.) Scribn. PERENNIAL FOXTAIL-GRASS. 

 Perennial. Culms tufted, 3-7 dm. tall, from rootstocks, slender, com- 

 pressed, rough below the raceme; sheaths glabrous, compressed; leaves 

 1-3 dm. long, 3-7 mm. wide, the upper surface often with a few long hairs 

 at the base; racemes dense, spikelike, 2-5 cm. long, nearly i cm. in diam- 

 eter, exclusive of the bristles, the rachis pubescent; bristles 5-10 mm. long; 

 spikelets ovoid, acute, 2-2.5 mm. long, the flowering scale acute, striate, 

 finely transverse-rugose. In moist soil, N. J. to Fla. and Tex.; and in Kans. 

 and Mo. Also in Tropical America. June-Aug. Differs from C. glauca in 

 having the bristles green or purplish instead of tawny yellow, and in being 



