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; stig- 

 mas feathery. Seed loose, egg-shaped, covered by the husks. 

 Named from polus, much, and pogon, beard. 33. 



2. P. Monspelie'nsis. 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. Fl. vol. i. p. 86. 113. 



2. P. Uttordlis. 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. MPLIUM. 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. Root fibrous : straws about four feet 



high, slender, smooth: leaves broad, flat, bright green: panicle 

 large, widely-spreading. 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. M. 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. 116. 



19. AGRO'STIS. BENT-GRASS. 



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

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

 membranous, ribbed husks, tufted with hairs at the base, the 

 larger frequently bearing an awn. Nectaries two minute scales. 

 Filaments 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 agros, a 

 field. 35. 



G 2 



