:n6 



POACK.E. 



eminent {igrostolo<,Mst, Dr. (Jniy also iledioated a genus to liim, 

 but it afterwards proved not to be distin(3t from (liisxiipinm.'' 



1. T. Arkansana (Torr.) Bentli. 1. e. Sderachnc Arkunmna 

 Torr. 1. 0. (i rem id Arhniaantt Nutt. 1. c. 



A soft delicate slender annual, 30-00 cm. liigh. Ligule sbort; 

 blades 5-8 cm. long. Panicle 1;2 cm. long, 1.5 cm. broad. Spike- 

 lets oval-lanceolate, 4 mm. long, witb an awn three times as long; 

 em))ty glumes and floral glume ;J-nerved. 



'J'exas, HevcMion for U. S. De])t. Agricul. 147, (lillcspic for 

 Nat. Herb., Xcallci/ for Tsat. Herb. 

 Florida to Arkansas and Soutlnvcst. 



G4. (133). Arctagrostis Griseb. Ledeb. Fl. Ross. 4:434 

 (1853). 



S])ikelets l-flo\vered, panicle narrow, racliilla articulate above the 

 lower glumes, smooth, not produced above the flower or very rarely 

 extending as a minute bristle. Empty glumes slightly unequal, 

 moderately acute, membranous; floral glume obtuse or 3-toothed, 

 5-nerved, the lateral ones obscure, unawned; palea as long as its 

 glume or shorter, 3-nerved, obtuse, or :.*-toothed. Stamens 2-3. 

 Styles distinct, very short. Grain oblong, included but not ad- 

 herent. 



A tufted perennial grass. Leaf-blades flat. Panicles slightly 

 branched, often compact. Spikelets in most respects like those of 

 Ayrostis. Two species are found in the arctic and subarctic re- 

 gions of Euroi)e, Asia, and America. A 

 genus according to lirown related to Col- 

 poilimn, according to lientham related to 

 Dei/eii:ria. The habit and size of the spike- 

 lets are more nearly like those of J*0(t than 

 of Af/roffis. 



1. A. latifolia (H. lir.) Griosb. 1. c. 

 Colpodium latifoUiim R. Br. Sup])l. Ap]i. 



^ _„ , , ,- , .. Parry's Voy. cclxxxvi (1S24). A(n-usii>i 

 FiQ. 56. — Arctagrostis lah- "^ ' \, 



foli'ii. A, spikelei; a, paradoxa R. Br. Ross' A"oy. App. ed. 2^ 

 ^ 2 : 108 (1810), name only. 



Culms 10-18-80 (I) cm. high. Leaf-blades of the culm 2-T 



