G. 319. ANDRO N HALLII Hack. Sitzungsber. Ak. Wiss. Wien, 89: 
E 1884 COLORADO ATO BÁN D-GRASS.—A aa glabrous perennial 4-9 dm. 
il PUn " more, wi ith flat lenya R m. (4’-8’) in length, and stout 
8 edt /-3i^)long. Sessile spike- 
lets. (a) pm mm. (4-5Y") long, with the first ( glume (b) ahne ks the keels 
3-nerved, 
retrorsely ciliate on the infolded margins. The fourth or y dicus ; glume is 
shown by eand the palea by f. Awn shorter than the spikelet or wanting.— 
Dry, sandy soil, North Dakota, pem southward to Kansas, Texas, and New 
Mexico. (Mexico.) July to Septem 
Var. FLAVEOLUS Hack. I. c., has boj oints of the rachis yellow-villous, spike- 
Jets 8 mm. (4% long, awn 2-5 mm. (1"-2j") long. — INCANESCENS Hack. I. c., 
has the joints of the rachis white-canescent, spikelets 11 mm. n ione, awn 
as in the preceding. Var . MUTICUS Hack. m RO M onog. Phan. 6 1899, 
5 eee LH 
