292 BOTANY. 



Festuca ovina, L., var. tenuifolia. — South Park, Colorado, 1873 

 (1151). 



Festuca ovina, L., var. brevipolia, Watson. — Mount Lincoln, Colorado, 

 1873 (1152). 



Festuca tenella, Willd. — Denver, Colorado, 1873 (1147); Santa 

 Fc, N. Mex., 1874 (74). 



Festuca Thurberi,* Vasey. — Culm 2-2^ feet high, erect, caespitose, 

 smooth, 2-4-leaved; leaves rigid, involute, 6' long, scabrous; radical leaves 

 numerous, involute, rigid, 1-H° long, very scabrous on the margin, sheaths 

 somewhat membranaceous ; blade deciduous when old ; panicle compound, 

 3-5' long, a little drooping, of 4-5 nodes ; branches or rays single or in 

 pairs, slender, 2-4' long, spreading when ripe, branching at or below the 

 middle ; spikelets purplish, oblong-lanceolate or cylindrical when young, 

 bi*oad above when expanded, 3-5-flowered, 5-6" long, slightly scabrous 

 under the lens ; glumes thin, membranaceous, ^ shorter than the flowers, of 

 nearly equal length (2"), obtuse or acutish, upper one convex, not com- 

 pressed, obscurely nerved, lower one slightly keeled ; flowers cylindrical, 

 convex, not compressed ; outer palet obscurely 5-nerved, 3" long, lanceo- 

 late, acute or short cuspidate, minutely scabrous; inner palet narrow, 

 slightly hispid on the keels, equalling the outer, sometimes bifid at the apex. 



This species in several preceding collections from the Rocky Mount- 

 ains has been called Festuca scabrella, Ton*., but upon careful comparison 

 of the figure and description of that species in Hooker's Fl. Bor. Am., I am 

 satisfied that this is a different species. — Twin Lakes, Colorado, 1873 

 (1153); South Park, Colorado (1154).— Plate XXIX. Natural size. 

 Fig. 1. Spikelet, magnified 5 diameters. 2. Upper glume. 3. Lower 

 glume 4. Upper palet. 5. Lower palet. 



Bromus ciliatus, L., var. purgans! — Utah, 1871 and 1872; Twin 

 Lakes, Colorado, 1873 (1155 and 1156); Sierra Blanca, Arizona, 1874 

 (802). 



Var. montanus. — Twin Lakes, Colorado, 1873 (1157); Mount Graham, 

 Arizona, 1874 (435). 



Bromus breviaristatus, Thurb. % (Watson's Botany 40th Parallel). — 



* [See, also, Botanical Gazette, vol. 2, No. 1.— J. T. R.] 



