TRIANDRIA— DIGYNIA. Knappia. 83 



lobes, or tufts, with smooth flower-stalks. Calyx-glumes nearly 

 equal, obtuse, purplish, combined at the base, minutely pointed, 

 but terminating in a membrane which conceals the dark-co- 

 loured point ; their sides hairy, and keels strongly fringed. Cor. 

 shorter than the calyx, abrupt, irregularly notched, ribbed 

 slightly at each side. Awn from below the middle, twice the 

 length of the calyx. Anth. linear, yellow. Styles short ; accord- 

 ing to Schrader combined at first, but subsequently distinct. 

 Stigmas long, cylindrical, acute, downy. 

 The root in var. y has extremely copious and long fibres, and one 

 or two of the lower joints of the stem, owing to a dry barren 

 situation, become oval and fleshy, as in Phleum pratense y, 

 p. 75. This has by many been mistaken for A. 6?</6osms, which 

 always grows in water, and differs essentially in character, as 

 I trust can no longer be doubted. 



6. K.fulvus. Orange-spiked Fox-tail-grass. 



Stem ascending, bent at the joints. Spike cylindrical, pa- 

 nicled. Calyx-glumes combined at the base, obtuse, 

 fringed. Awn the length of the calyx. Anthers roundish. 



A. fulvus. Engl. Bot. v. 21. t. 1467. Camp. 13. 

 A. geniculatus var. 4. With. 121. 



In ponds and ditches, floating on the surface. 



In Edgbaston park, near Birmingham. Withering. At Swains- 

 thorpe, near Norwich. Mr. Stone. In Angusshire and Fifeshire, 

 Messrs. Don. Hooker. 



Perennial. July. 



Like the preceding in habit, and in general structure; but our spe- 

 cimens are much more luxuriant. Spike about 3 inches long, 

 conspicuous for the orange colour of the anthers, which are still 

 more peculiar on account of their short roundish figure. The 

 shortness of the aw7is may be a variable circumstance. The sug- 

 gestion of Dr. Withering first led me to propose this as a species, 

 and 1 still wish to leave it for more accurate examination, though 

 Professor Hooker is of a different opinion. I hope not to be 

 thought precipitate or dogmatical, which faults 1 have had ex- 

 perience enough to wish, at least, to avoid. 



32. KNAPPIA. Knappia. 



Engl. Bot. V. 16. 1127. Fl. Br. 1387. Comp. 6. Hook. Lond. 

 t. 64. 



Mibora. Adans. Earn. v. 2. 495. Beauv. Agr. 29. t. 8./. 4. 



Chamagrostis. Schrad. Germ. v. 1. 158. 



Cal. of 2, nearly equal, expanded, concave, keeled, ovate, 

 abrupt, single-ribbed, awnless valves, containing a single 

 floret. Cor. of 2 unequal, obovate, membranous, ribbed, 



G 2 



