292 BOTANY. 



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

 (1151). 



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

 1873 (1152). 



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

 Fe*, N. Mex., 1874 (74). 



Festuca Thurbeiu,* Vasey. — Culm 2-2 £ feet high, erect, caespitose, 

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

 numerous, involute, rigid, 1-14° 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 

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

 broad above when expanded, 3-5-flowered, 5-G" 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 scdbrclla, Torr., 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 Blanco, Arizona, 1874 

 (802). 



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

 Arizona, 1874 (435). 



Bromus rreviaristatus, Thurb. ? (Watson's Botan} r 40th Parallel). — 



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



