APPENDIX. IO59 



wide, obovoid, glabrous. In dry ground, Mo. June and July. Related 

 to P. angustifoltum Ell., but has glabrous leaves and spikelets, the latter 

 also differing in shape. 



P. 84, before No. 17, insert: 



16a. Panicum perlongum Nash. Elongated Panic-grass. A tufted 

 pubescent perennial. Culms 2-4 dm. tall, simple; sheaths hirsute with 

 long ascending hairs; leaves elongated, linear, erect, papillose-hispid be- 

 neath, 2-$ mm. wide, the upper one commonly 8-14 cm. long; panicle 

 much exserted, generally extending beyond the apex of the upper leaf, 

 4-6 cm. long, its branches erect or nearly so; spikelets about 3.25 mm. 

 long and 1. 5-1. 75 mm. wide, pubescent with a few scattered long hairs. 

 On prairies and in dry soil, 111. to S. Dak. and the Ind. Terr. M"v Aug. 

 Differs from P. Enslini in having larger spikelets which are nt^-.y gla- 

 brous. 



P. 84. afte Panicum Bicknellii Nash, insert: 



18a. Panicum ciliatum Ell. Ciliate Panic-grass. Culms tufted. 1-2.5 

 dm. tall, simple, glabrous, the axis of the panicle and its branches hirsute; 

 sheaths glabrous: leaves spreading or ascending, glabrous on both sur- 

 faces, conspicuously ciliate on the margin, usually 2-6 cm. long and 5-10 

 mm. wide: panicle 3-5 cm. long, its branches ascending; spikelets 1.8-2 

 mm. long and about 1 mm. wide, elliptic, pubescent with short spreading 

 hairs. In sandy soil. Va. (according to T. H. Kearney, Jr.) to Fla. and 

 Miss. May-July. The short and broad strongly ciliate leaves distinguish 

 this from P. Bicknellii Nash, and the glabrous sheaths separate it readily 

 from P. laxiflorum Lam. 



P. 85. before No. 24, insert: 



23a. Panicum Yadkinense Ashe. Yadkin Panic-grass. A glabrous 

 perennial. Culms single, 8-10 dm. tall, finally somewhat branched; 

 sheaths white-spotted; leaves ascending, lanceolate, acuminate, the pri- 

 mary ones 8-12 cm. long, 8-12 mm. wide; panicle 8-12 cm. long, its 

 branches long, ascending; spikelets about 2.3 mm. long and 1 mm. wide, 

 elliptic, acute, glabrous. In dry or sandy soil. Md. to Ga. June-Sept. 

 Differs from Panicum dichotomum L. in its taller culms, and larger leaves 

 and spikelets. 



No. 24, read " lucidum Ashe" instead of " sphagnicola Nash"; length 

 of spikelets should be 1.5-2 mm.; omit in line 7 the words "or sparsely 

 pubescent ". 



After Panicum Eatoni Nash, insert: 



27a. Panicum octonddum J. G. Smith. Eight-jointed Panic-grass. 

 Glabrous. Culms erect, 7-1 1 dm. tall, finally branched; leaves erect, firm, 

 4-1 1 cm. long, 4-8 mm. wide, lanceolate; panicle 9-13 cm. long, oblong, 

 dense, 2-4 cm. wide, its branches erect or nearly so; spikelets 1.3 mm. 

 long and about 0.8 mm. wide, glabrous, oval or nearly globular. In wet 

 places, N. J. to Ala. and Tex. May-Aug. Differs from Panicum Eatoni 

 in its smaller, nearly globular glabrous spikelets. 



P. 85. after Panicum Eatoni, insert: 



27b. Panicum paucipilum Nash. Few-haired Panicum. A tufted 

 nearly glabrous perennial. Culms 6-10 dm. tall; leaves 5-8; sheaths 

 with the exterior margin ciliate toward the summit; blades erect or 

 ascending, thickish, sometimes minutely puberulent on the lower sur- 

 face, the lower and larger primary ones 6-9 cm. long, 5-7 mm. wide; 

 panicle 5-10 cm. long, rather dense, its branches erect-ascending or 

 erect; spikelets numerous, about 1.4 mm. long and 0.8 mm. wide, 

 oval, pubescent with spreading hairs. In wet soil, southern N. J. to Fla. 

 and Miss. July and Aug. 



