40 
POACEAE. 
2. Melica spectabilis Scribn. In meadows from Mont to Wash., Colo, and 
Oregon.—Alt. 8000-9000 ft.—Honnold; North Park; foot of Mt. Richtofen, 
on the Michigan; mountain west of Cameron Pass. 
3. Melica bulbosa Geyer. In meadows and on hillsides from Mont, to 
Wash., Colo., Utah and Ore.—Rabbit-Ears, Larimer Co.; Glenwood Springs, 
Garfield Co. Osterhout’s specimens (somewhat undeveloped) have unusually 
broad leaves and may belong to the closely related M. californica Scribn. 
58. DACTYLIS L. Orchard-grass. 
1. Dactylis glomerata L. Cultivated and naturalized from Europe; in fields 
and waste places from N. B. to Wash., Fla. and Calif.—Alt. 4000-9000 ft.— 
Cucharas River, below La Veta; Chicken Creek; Veta Pass, Costilla Co.; 
Fort Collins. 
59. BRIZA L. Quaking-grass. 
1. Briza maxima L. Introduced ornamental grass, and escaped along irri¬ 
gation ditches.—Alt. about 7500 ft.—Gunnison. 
60. DISTICHLIS Raf. Salt-grass, Marsh Spike-grass. 
1. Distichlis stricta (Torr.) Rydb. ( D . maritima stricta Thurber.) In 
salt marshes from Sasic, to Wash., Mo., Tex. and Calif.—Alt. 4000-7500 ft.— 
Grand Junction; Deer Run; New Windsor, Weld Co.; near Denver; Fort 
Collins; Saguache Creek; Alamosa; Pueblo; Rocky Ford. 
61. POA L. Blue-grass, Meadow-grass, Bunch-grass. 
Annuals. I. Annuae. 
Perennials. 
Cobweb at the base of the flowers present, although in some species scant; 
flowering glume acute (except in P. compressa ), and usually strongly 
keeled ; plants with horizontal rootstocks, never true bunch-grasses. 
Intermediate nerves of the flowering glumes strong. 
Inflorescence with numerous many-flowered spikelets; its branches in fruit 
ascending; the lower in 3’s or 4’s; flowering glumes acutish; cobweb 
copious. II. Pratenses. 
Inflorescence with usually few-flowered spikelets; its branches reflexed or 
spreading in fruit; flowering glumes very acute. 
Spikelets few and usually purplish; branches of the inflorescence few, 
solitary or in pairs, only in P. callichroa in 3’s. III. Reflexae. 
Spikelets many, green; branches of the inflorescence many; the lower 
often in 3’s or 4’s. IV. Platyphyllae. 
Intermediate veins of the flowering glumes faint or obsolete. 
Stem compressed ; panicles narrow, open. V. Compressae. 
Stem not compressed. 
Branches of the panicles reflexed. VI. Apertae. 
Branches of the large panicle not reflexed. 
Flowers green ; nerves of the empty glumes strong; meadow species 
with flaccid leaves. VII. Serotinae. 
Flowers more or less purplish; nerves of the empty glumes usually 
faint; hill species with rather stiff leaves. VIII. Rupicolae. 
Cobweb at the base of the flowers none. 
