APPENDIX. 1043 



ia. Eatonia pubescens Scribn. & Mer. HAIRY EATONIA. A tufted per- 

 ennial, with the sheaths, back of the ligule and lower part of the culm 

 softly and densely pubescent. Culms 3-8 dm. tall; leaves 5-18 cm. long, 

 3-6 mm. wide, glabrous, or often softly pubescent; panicle 5-20 cm. long; 

 spikelets 2.5-3.5 mm. long. In dry soil, Penn. to Ga. and Tex. May-Aug. 

 Differs from E. obtusata in having the sheaths, and often also the leaves 

 and culms, softly pubescent. 



After Eatonia nitida (Spreng.) Nash, insert: 



3a. Eatonia glabra Nash, n. sp. SMOOTH EATONIA. Culms densely 

 tufted, slender, 3-7 dm. tall; sheaths glabrous; leaves rough, flat, 2-7 cm. 

 long, 1.5-3 mm. wide; panicle 7-15 cm. long, slender, nodding at the sum- 

 mit; spikelets 3-4 mm. long. In woods, southern N. Y. to Tenn. May- 

 July. The glabrous sheaths and leaves separate this from E. nitida. Type 

 collected in Madison Co., Tenn., by S. M. Bain, Apr. 1893, No. 507. 



P. 135, after Uniola laxa (L.) B.S.P., insert: 



la. Uniola longifolia Scribn. HAIRY-SHEATHED UNIOLA. Culms tufted, 

 8-12 dm. tall: sheaths, at least the lower ones, densely hirsute; leaves flat, 

 3 dm. long or less, narrowed at both ends, 6-12 mm. wide; panicle 2-4.5 

 dm. long, its branches short and appressed, or the lower ones sometimes 

 long and ascending; spikelets 3-4-flowered, usually about 6 mm. long, the 

 flowering scales about 5 mm. long. In dry, usually sandy soil, Tenn. to 

 Fla. and La. Aug. and Sept. Distinguished by its larger size and strongly 

 hirsute sheaths. 



P. 156, in Elymus striatus Willd., sixth line, omit the words " rough, 

 hispid or "; add: 



ia. Elymus Arkansanus Scribn. & Ball. ARKANSAS WILD RYE. Culms 

 slender, erect, 6-9 dm. tall; sheaths ciliate on the margin; leaves 1-2 dm. 

 long, 4-8 mm. wide, erect or ascending, auricled at the base, rough on the 

 lower surface, the upper surface finely and densely pubescent; spike long- 

 exserted, nodding, 6-9 cm. long; spikelets 2 at each node, 2-flowered; 

 empty scales linear-subulate, hispidulous and 2-3-nerved above, 8-10 mm. 

 long and bearing a straight awn 1-2 cm. long; flowering scales minutely 

 hispidulous, about 7 mm. long, ending in a straight awn 2-4 cm. long. In 

 woods, la. to Ark. and Mo. July. Differs from E. striatus in having the 

 empty and flowering scales merely hispidulous. 



P. 157, after Elymus hirsutiglumis Scribn. & Sm., insert: 

 3a. Elymus australis Scribn. & Ball. SOUTHERN WILD RYE. Culms 

 stout, erect, 9-15 dm. tall; sheaths rough-hairy; leaves ascending, 2-3 dm. 

 long, 1-1.5 cm - wide, very rough on the lower surface, rough or rough- 

 hairy above; spike 1-1.5 dm. long; spikelets 2 at each node, 4~5-flowered; 

 empty scales diverging, thickened, coriaceous and somewhat curved at 

 the base, usually rough-hairy, about 1.5 cm. long, bearing an awn of 

 about the same length; flowering scales 8-10 mm. long, hirsute, termi- 

 nated by a straight awn 2.5-3 cm. long. In moist woods and thickets, 

 N. C. to Fla., west to Ark. and Mo. July and Aug. Intermediate be- 

 tween E. hirsutiglumis and E. Canadensis; separated from the former by 

 its stouter spike and longer scales and awns, and from the latter by the 

 thickened and hirsute empty scales. 



3b. Elymus glabriflorus (Vasey) Scribn. & Ball. SMOOTH-FLOWERED 

 WILD RYE. Culms erect, stout, 5-10 dm. tall; sheaths loose, smooth or 

 rough-hairy; leaves numerous, 1.5-3 dm. long, 6-10 mm. wide, erect or as- 

 cending, somewhat roughened on the lower surface, rough and sometimes 

 a little hairy on the upper surface; spike stout, erect or nodding, 1-1.5 dm. 

 long, sometimes glaucous; spikelets 2 or 3 at each node, 3-5-flowered; 

 empty scales thickened, strongly 3~5-nerved, hispidulous on the nerves, 

 11-15 mm. long, bearing an awn about 2 cm. long; flowering scales 9-12 

 mm. long, minutely hispidulous, terminated by a straight slender awn 2-3 



