8 4 



THE GENERA AND THEIR SPECIES. 



Bromus. Plates xx. 



Panicle erect or 



65. maximus 30 in 



and xxi. FESTUCEZE. 

 inclined — 



Great Brome. Florets lanceolate, rachis 

 downy ; florets with conical point at base. 



6y,avvensis 15 in. Field Brome. Florets oblong and turgid, 

 rachis rough, lower branches whorled. 



62. erectus 30 in. Upright Brome. Florets lanceolate, 



rachis rough, lower branches in threes. 



66. madritensis 12 in. Compact Brome. Florets lanceolate; 

 rachis rough, lower branches in pairs. 

 Panicle drooping. 



63. asper 72 in. Hairy Brome. Awn shorter than floret 



and straight, sheath rough. 



64. sterilis 30 in. Barren Brome. Awn longer than floret 



and straight, sheath pubescent. 



68. giganteus 48 in. Tall Brome. Awn longer than floret, 

 waved and twisted, sheath glabrous. 



62. B. erectus. Sandy fields and chalky soils of Temperate 

 and Southern Europe. July and August. Root perennial, tufted, 

 black, slightly creeping, fibres long and branching. Stems several, 

 erect, rigid, striated ; nodes downy. Leaves folded in bud at 

 base, linear, fringed on edges, upper leaves broader, hairs erect, 

 dark green. Sheaths almost entire, long, ribbed, hairs ascending ; 

 ligule very short, truncate, torn. Panicle erect ; branches dis- 

 tant, half -whorled, nearly upright ; rachis rough. Spikelets 

 linear, lanceolate, erect, compressed, florets four or more, remote, 

 uppermost often imperfect, generally purple. Outer glume the 

 larger, membranous, lanceolate, pointed, keeled, glabrous ; 

 inner glume with three ribs. Outer palea with five ribs, second 

 and fourth indistinct, lanceolate, cleft, keel toothed, flat above, 

 incurved below, awned from below apex ; inner palea flat, awnless, 

 a green rib on each side, edges inrlexecl. Anthers orange, large, 

 frinered. 



