WOOTON AND STANDLEY—FLORA OF. NEW MEXICO, 95 
62. MELICA L. ME ic GRass. 
Perennials with usually soft flat leaves and with rather large spikelets in lax or 
dense, usually narrow panicles, or sometimes in simple racemes; spikelets 2 to several- 
flowered, terete or slightly flattened; rachilla jointed above the glumes and between 
the fertile florets, usually bearing 2 or 3 empty glumes at the apex; glumes unequal, 
membranaceous, awnless, 3 to 5-nerved; lemmas larger, rounded on the back, 7 to 
13-nerved, scarious-margined, awnless or short-awned; palea broad, 2-keeled; stamens 
3; styles distinct; grain free. 
1. Melica porteri Scribn. Proc. Acad. Phila. 1885: 44. pl. 1. f. 17, 18. 1885. 
Melica mutica parviflora Porter in Port. & Coult. Syn. Fl. Colo. 149. 1874. 
Melica parviflora Scribn. Mem. Torrey Club 5: 50. 1894. 
Type Locauiry: Glen Eyrie, Colorado. 
Rance: Colorado and Kansas to Arizona and Texas. 
New Mexico: Chama; Santa Fe; Sandia Mountains; Las Vegas; Winsors Ranch; 
Mogollon Mountains; Silver City; Organ Mountains; White and Sacramento moun- 
tains. Damp woods, in the Transition and Canadian zones. 
638. BROMUS L. Brome Grass. 
Annuals or perennials with flat leaves and rather large, erect or pendulous spikelets; 
spikelets few to many-flowered, slightly or strongly flattened laterally, paniculate 
or rarely racemose; rachilla jointed above the glumes and between the florets; glumes 
unequal, acute or the second short-awned, | to 5-nerved, shorter than the lemmas; 
lemmas keeled or rounded on the back, 5 to 9-nerved, usually 2-toothed at the apex 
and awned from the back just below the point or from between the teeth, or some- 
times awnless; palea a little shorter than the lemma, 2-keeled; stamens usually 3; 
stigmas sessile, plumose; grain sulcate, adherent to the palea. 
KEY TO THE SPECIES. 
Lemmas compressed-carinate at the base. 
Lemmas appressed-villous. 
Sheaths more or less villous........-----.------------- la. B. marginatus 
latior. 
Sheaths glabrous or nearly 80. ...-.---------------+-+-- lb. B. marginatus 
seminudus. 
Lemmas smooth or scabrous. 
Leaves and sheaths conspicuously pubescent. ...--.--- 2. B. unioloides. 
Leaves glabrous, the sheaths sometimes slightly pu- 
bescent. 
Awns inconspicuous; leaves narrow.....-..-- .---- 3. B. polyanthus. 
Awns conspicuous; leaves wide......------------ 3a. B. polyanthus 
paniculatus, 
Lemmas not compressed-carinate but rounded, at least at the 
base. 
Lemmas glabrous or scabrous. 
Sheaths pubescent. 
Panicles dense, contracted; plants low, 40 cm. high 
or less...-------------- 2-22 eee eee ee eee eee 4. B. hordeaceus 
glabrescens. 
Panicles loose, more or less spreading; plants more 
than 50 cm. high. ..........-.-+--+--------- 5. B. racemosus. 
