CL. III.] TRIANDRIA DIGYNIA. 73 



17. POLYPO'GON. BEARD-GRASS. 



Calyx one-flowered, of two nearly equal, keeled, cleft chaff- 

 scales, each with a terminal awn. Corolla of two egg-shaped 

 husks, inclosed within the calyx ; the outer keeled and awned. 

 Filaments hair-like, as long as the corolla ; anthers oblong, cleft 

 at both ends. Germen oval. Styles short, distinct ; stigmas fea- 

 thery. Seed loose, egg-shaped, covered by the husks. Named 

 from polus, much, andpogon, beard. 33. 



1. P. Monspeliensis. Annual Beard-grass. Awns straight, thrice the 



length of the calyx ; root fibrous. Straws a foot high, simple, smooth : 



leaves flat, acute, striated, rough on the edges and ribs: panicle pale. 

 Annual : flowers in July and August : grows in moist pastures, in 

 Hampshire, Essex, and Norfolk : rare. Eng. Bot. vol. xxiv. pi. 1704. 

 Eng. F/.voI. i. p. 86. 113. 



2. A. Itttordlis. Perennial Beard-grass. Awns straight, about the 



length of the calyx ; root creeping. Straws about a foot high, branched, 



smooth : leaves rough on both sides and on the edges :' panicle purplish. 

 Perennial : flowers in July and August : grows in salt marshes in 

 Norfolk and Essex : rare. Eng. Bot. vol. xviii. pi. 1251. Eng. Fl. vol. 

 i. p. 87. 114. 



18. MI'LIUM. MILLET-GRASS. 



Calyx one-flowered, of two unequal, egg-shaped, tapering, 

 awnless chaff-scales. Corolla of two unequal, egg-shaped husks, 

 inclosed within the calyx, the outermost sometimes awned on the 

 back. Nectaries membranous, cleft. Filaments hair-like, very 

 short. Germen egg-shaped. Styles united, or very short. Seed 

 egg-shaped, covered with the hardened husks. Named from 

 mille, a thousand (seeds tourt). 34. 



1. M. effusum. Spreading Millet-grass. Flowers awnless, in a loose, 



spreading panicle. Rootfibrous : straws about four feet high, slender, 



smooth : leaves broad, flat, bright green : panicle large, widely-spread- 

 ing. Perennial : flowers in June and July : grows in moist shady 

 places: frequent. Eng. Bot. vol. xvi. pi. 1106. Eng. Fl. vol. i. 

 p. 87. 115. 



2. ill. lendigerum. Panick Millet-grass. Flowers awned, in a dense, 



spiked panicle. Root fibrous : panicle erect, very close, tapering, 



pale-green. Annual : flowers in August : grows in moist meadows, in 

 England; Sheppey ; Weymouth; Gillingham : not common. Eng. Bot. 

 vol." xvi. pi. 1107. Eng. FL vol. i. p. 88. 1 !6. 



19. AGRO'STIS. BENT-GRASS. 



Calyx of two unequal, acute, keeled, awnless, permanent chaff- 

 scales, containing one flower. Corolla of two unequal, mem- 

 branous, ribbed husks, tufted with hairs at the base, the larger 

 frequently bearing an awn. Nectaries two minute scales. Fila- 

 ments hair-like, rather longer than the husks ; anthers deeply 

 divided at each end. Germen egg-shaped. Styles short. Stigma 

 densely hairy. Seed egg-shaped, shining, loose, enveloped in the 

 unaltered corolla. Named from apron, a field. 35. 



G 2 



