118 
61. Zerna. 10. GRAMINEiE. 
Pl. end. ph . 
Sandy places, sides of walls; annual; June. 
Root fibrous ; culm 1 foot high, upright, slender, leafy ; 
sheaths rather keeled ; ligula short ; peduncle 3 inches long, 
upright, bundled ; branches 3 to 6, mostly simple, one- 
flowered, upright; locustce upright, brownish. 
/3. triandra . Stamens 3. 
XXL 62. BROMUS. Theophrastus. Brome, 
Glumes manyflowered \jlowrels crowded, imbricate, much 
shorter than the glumelles; spathelles alternate, oval, 
lanceolate ; lower 5-ribbed ; upper many-ribbed, bristled ; 
glumelles awned; lower spathellule , ovate, 5 to 9 -ribbed, 
apex cordately lobed, awn straight below the tip ; upper 
flat oblong ; lodicule ovate, not notched, smooth ; ovary 
obtuse; stigmata feathered; cariopsis husked, furrowed. — 
Panicle compound ; locustce ovate. 
1. Bromus aryensis . Field hrome . 
Panicle spreading, drooping, compound ; peduncles 
branched, long ; locustce lanceolate, acute ; spathellules el- 
liptical, imbricate, depressed, smoothish, with 2 close ribs 
on each side ; awn straight, shorter than the flowrets ; leaves 
slightly downy. 
Festuca avenacea q. Festuca elatior, paniculis minus sparsis, locustis 
©blongis strigOsis, aristis purpureis splendentibus Doody, Raii Syn. 414, 9. 
Bromus arvensis, Lin . S. P. 113. 
Avena arvensis, Salisb. Prodr. 23. 
Bromus versicolor, Pollich Paint. 109. 
Bromus spicula tenuata, Knapp Gram. 81. 
Bromus leptostacbyos, Hull Brit. FI. ed. 2, 32. 
Corn-fields; annual; August. 
Root fibrous; culm 3 feet high, upright; leaves spreading; 
peduncles first upright, afterward drooping, with 6 to 12 
locustse ; lower bracteate Iractece 2, falling off. 
2. Bromus pratensis . Meadow brome* 
Panicle ' spreading, rather erect, branched ; peduncles 
long, scarcely branched ; locustce ovate, turgid ; spathellules 
elliptical, broad, imbricate, smoothish, with 3 equidistant 
ribs on each side; awn as long as the flowret; leaves pilose; 
lower sheath tomentose. 
Bromus pratensis, Ehrk. Calam. 116. 
Bromus arvensis, Engl. Bot. 920. 
Bromus elongatus, Gaud. Agrost. Helv. 305. 
Fields; annual; June. 
Culm 2 feet high; panicle small, upright , 
