598 CLXI. GRAMINEZ. AGROSTIS. 
the length of the pales; palee smooth, the lower one shorter; sta. 3—Long 
Island, Kneiskern. July. 
9. A. HETEROLEPIS. Wood. (Vilfa heterolepis. Gray.) 
St. 1—2f high, smooth; lvs. setaceous, somewhat convolute, scabrous on 
the margins; lower sheaths pubescent, upper ones smooth; panicle spreading, 
pyramidal, few-flowered; glwmes purplish, outer one subuliform, inner one 
ovate, cuspidate, membranaceous in texture, l-veined; valves of the perianth 
oblong, obtuse, thin, a little shorter than the superior glume, inferior valve 
veined, apiculate, superior valve 2-veined, shorter than the outer one; sta. 3; 
anth. linear, reddish; stig. 2; sty. short; fr. roundish, smooth.—W atertown, N. 
Y. Crawe. <Aug., Sept. 
10. A. suncea. Michx. (A. Indica. Muhl.) a ua 
Glaucous; st. erect, 1—2f high, terete, slender; lws. erect, 2—6” by 1”, 
concave, convolute when dry, margin scabrous; sheaths much shorter than the 
internodes; stip. short; pan. oblong-pyramidal, branches verticillate, about in 
6s; glumes purple, lanceolate, acute, upper as long as the palew, the lower 
twice shorter; palea subequal; anth. and sty. whitish—2 Penn. to Flor., 
barrens. Oct. 
§ 3. MunLeNnBERGIOIDERZ. Glwmes shorter than the palea. 
11. A, Mexicana. (A. lateriflora. Mz. Muhlenbergia. Mex. Tyin.) 
St. erect or ascending, with swelling nodes, much branched and leafy 
above, often nearly leafless below, 143—383f high; dws. lanceolate, scabrous, 
with half-clasping sheaths; panicles numerous, terminal and lateral, narrow 
and dense-flowered, lateral ones partly enclosed in the sheath ; glwmes narrow, 
acuminate, mostly shorter than the subequal, pubescent paleze—% Wet shades, 
N. Eng. to Ohio! and IIl., common. 
12. A. soponirERA. Muhl.. (Tricochloa. Trin. Muhlenbergia. Gray.) 
St. erect, slender, producing shoots at base, sparingly branched, 18—30’ 
high; branches erect and filiform; nodes not swelling; /vs. linear-lanceéolate, 
with open sheaths; panicle simple, filiform, with appressed branches, and 
crowded spikelets; palee@ equal, longer than the acute glumes,—2 Rocky hills, 
New Eng. toIll., frequent. Aug. 
13. A. sytvaTica. Torr. (Muhlenbergia. Gray.) = 
St. ascending, 2—3f long, much branched, diffuse, smooth, with swelling 
nodes ; /vs. lanceolate, scabrous, veined, 4—6/ long, with smooth, open sheaths ; 
panicles slender, rather dense; glwmes nearly equal, acuminate, a little shorter 
than the pale ; awn several times longer than the spikelet—®2, Rocky shades, 
N.Y. to fit, N.J., Penn. Sept. 
14, A. WitipeNown. Trin. (A. tenuiflora. Willd.) 6 
St. erect, subsimple, pubescent at the nodes, with a few appressed 
branches; /vs. 6—9’ by 2—3”, lanceolate, veined, scabrous, spreading, with 
pubescent sheaths; panicle contracted, very slender and long, with remote, fili- 
form branches; glumes subequal, acuminate, half aslong as the palee; awn 
3—4 times the length of the spikelet—2, Rocky woods, Can. and U.S. 
July, August. 
15. A crypranpria. Torr. 
Panicle pyramidal, with spreading, generally alternate branches, hairy at 
the axils; fs. swbracemed ; lower glume very short, upper one as long as the 
nearly equal palee ; stems 3f high; sheaths bearded at the throat. Very abundant 
at Buffalo. Azkin. 
16% A. Lonarrouia. Torr. (A. aspera. Micha. 7) | 
St. erect, simple, 2—4f high; lvs. 2f long, filiform at the end, with smooth, 
closed sheaths and bearded stipules; panicles terminal and lateral, contracted 
into a spiked form, generaJly concealed in the swelling sheaths ; glwmes dusky- 
urple, much shorter than the subequal, smooth, spotless pale Sandy fields, 
orthern States. Sept., Oct—Perhaps a Sporobolus, 
