72 TRIANDRIA DIGYNIA. [cL. III. 



panicle hardly an inch long : chaff-scales united at the base, three- 

 ribbed, covered with long, close, white hairs. Perennial : flowers 

 in July : grows on some of the highest mountains of Scotland, 

 Discovered by Mr. R. Brown on Loch-na-gar, in Aberdeenshire ; 

 Clova mountains, Forfarshire. Eng. Bot. vol. xvi. pi. 1126. Eng. 

 Fl. vol. i. p. 81. 107. 



3. A. agrestis. Slender Fox-tail-grass. Straw erect; roughish 

 above ; panicle spiked, cylindrical, tapering at the end ; chaff-scales 



acute, nearly bare ; awn twice the length of the calyx. Root 



fibrous : straws abo.ut two feet high : leaves rough above : spike 

 slender, three inches long, purplish: chaff-scales lance-shaped. 

 Annual : flowers in July : grows in cultivated fields and by way- 

 sides. Eng. Bot. vol. xii. pi. 848. Eng. Fl. vol. i. p. 81. " 108. 



4. A. bulbosus. Bulbous Fox-tail-grass. Straw erect ; spike 

 simple ; chaff-scales separate, linear, acute, downy ; root bulbous. 



Root bulbous : straws erect, smooth : leaves narrow, striated: 



spike dark green: chaff-scales narrow, with the keel and ribs 

 fringed : husk bluntish, its awn twice the length of the calyx. 

 Perennial : flowers in July: grows in salt marshes in England : rare. 

 Near Yarmouth and Weymouth. Eng. Bot. vol. xviii. pi. 1249. 

 Eng. Fl. vol. i. p. 82. 109. 



5. A. geniculdtus. Floating Fox-tail-grass. Straw ascending, 

 bent at the joints ; panicle spiked, cylindrical ; chaff- scales united 

 at the base, abrupt, fringed ; awn twice the length of the calyx. 



Root fibrous : straw decumbent at the base : leaves broader 



and shorter than in the last : spikes an inch and a half long : chaff- 

 scales obtuse, purple, twice the length of the calyx. Perennial : 

 flowers in June and July: grows in ditches and watery places : com- 

 mon. Eng. Bot. vol. xviii. pi. 1250. Eng. FL vol. i. p. 83. 110. 



6. A.fulvus. Orange-spiked Fox-tail- grass. Straw ascending, bent 

 at the joints ; panicle spiked, cylindrical ; chaff-scales united at 



the base, obtuse, fringed ; awn as long as the calyx. This is 



hardly distinct from the last, the comparative length of the awn 

 affording the only remarkable difference. Perennial : flowers in 

 June and July, grows in ditches and watery places : not unfre- 

 quent. Eng. Bot. pi. 1467. Eng. Fl. vol. i. p. 83. 111. 



16. KNA'PPIA. KNAPPIA. 



Calyx one-flowered, of two nearly equal, keeled, egg-shaped, 

 abrupt, awnless chaff- scales. Corolla of two unequal, inversely 

 egg-shaped, membranous, hairy, fringed, awnless husks, shorter 

 than the calyx. Filaments hair-like, twice the length of the 

 calyx ; anthers oblong, cleft at both ends. Germen minute, 

 roundish. Styles short, stigmas long, cylindrical, acute, downy. 

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

 Mr. Knapp. 32, 



1. K. agrostidea. Early Knappia. Root fibrous: stems from 



one to three inches high, erect, slender, triangular : leaves short, 

 channelled, at the base of the stem : flowers purplish, nearly sessile. 

 Annual : flowers in March and April : grows in sandy pastures by 

 the sea-shore, in the south of England, Wales, and in Ireland : rare. 

 Eng. Bot. vol. xvi. pi. 1127. Eng. Fl. vol. i. p. 84. 112. 



