VNioLi, TRIANDRIA. DIGYNIA. 105 



1. U. latifolia Mich.: leaves broad and flat; panicle 

 loose, nodding ; spikelets all on loiiif peduncles ; florets; t«orne- 

 what falcate, monandrous ; the lowest one abortive. Mich, 

 FL I. p. 70. Pursh FL I. p. 8-2. Elliott Sk. I. 

 p. 187. Muhl. Gram. p. 155. R u e m. <^ Schult. II. 

 p. 594. 



Hoot perennial. Culm about 4 feet high, terete, smooth, a little 

 branching Leaves a fool or two lung, nearly an inch broad, 

 smooth. Sheaths longer than the joints, hairy at the throat. 

 Stifiule very short. Paiiicle often a foot long, loose ; rachis 

 triangular; branches solitary or geminate, unequal. Spiketets 

 nearly an inch long, ovate, about 10-fl>)werec] ; the lowest 

 floret 1-valved, resembling a glume. Glumes unequal, lance- 

 olate, striate, very acute, scabrous on the keel. Corolla re- 

 sembling the calyx in texture; inferior valve very sharp on 

 the keel, which is scabrous and hairy towards the base; apex 

 rather obtuse and mucronaie ; superior valve folded in the in- 

 ferior one, lanceolate, acute, entire, ciliate on the margin. An," 

 ther yellow. Styles 2, short ; stigmas very long, simply plu- 

 mose. Seed oval, compressed. 



Hab. On the Allegany Mountains, in shady woods among rocks. 

 Pursh. On the banks of the Susquehannah. Muhlen" 

 berg. August. My specimens are from North-Carolina. 



2. U. gracilis M i c h. : panicle elongated, racemose, 

 appressed ; spikelets 3-flower6d ; florets spreading, straight, 

 monandrous, the lowest one abortive. MicL FL I. p. 71. 

 Pursh Ft. \. p. 82. Elliott Sk. \. p. 168. MuhL 

 Gram. p. 157. Bo em. ^ Schult. II. p. 595. Holcus 

 laxus Lin. Sp.pl. 1486* Willd. Spec. IV. p. 934. 



Root perennial. Culm 3 — 4 feet high, slender, a little com- 

 pressed, leafy. Leaves a foot or more long, 2 — 3 lines broad, 

 attenuated to a fine point, flat, nerved, smooth. Sheaths shorter 

 than the joints, hairy at the throat. Stifiule very short, ciliate. 

 Panicle with solitary, short, remote branches appressed to the 

 rachis. Sfiikelets broad-cuneate, very acute at the base, 2 — 3 

 at the extremity of each branch. G/«7«es acute, rigid. Infe- 

 rior valve of the corolla lanceolate, acuminate, minutely trun- 

 cated at the tip ; margin slightly ciliate ; superior valve shorter, 

 a little scabrous on the back. Anther and stigmas dark purple. 

 Seed oblong, brown. 



Hab. In sandy swamps. Common on the sea-coast of Long- 

 Island. In the pine-barrens of New- Jersey. August. 



3. \].spicata L.: panicle spiked, straight; leaves invo- 

 lute, distichous, spreading ; spikelets 5 — 9-tlowered ; florets 

 triandrous. Sp. ph 104. W il I d. Spec. I. p. 400. Elliott 

 Sk. 1. p. 166. Muhl. Gram. p. 157. U. ipicala et disti- 

 chophylla Roem. ^ Schult. II. pp. 595, 596. Festuca 

 distichnphylla Mich. FL I. p. G7. Pvrsh FL I. p. 84. 



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