CL. III.] TRIANDBIA DIGYNIA. 91 



each; leaves flat, minutely serrated; root fibrous. Two feet high, 



erect : leaves linear, rough on the edges and ribs : panicle erect, with 

 rough branches. Perennial : flowers in July : found by Mr. G. Don, 

 on the rocky summits of the Clova mountains in Angus-shire. Eng. Bot. 

 vol. xxx. pi. 2141. Eng. Fl. vol. i. p. 165. 201. 



6. A. planiculmis. Flat-stemmed Oat-grass. Panicle erect, branched, 

 spreading ; flowers from five to seven, much longer than the calyx ; 

 leaves broadly linear, rough, minutely serrate, their sheaths flat and 



sharply keeled ; lower part of the straw two-edged. Discovered by 



Mr. Stuart Murray, in Glen Sannox, Arran. Perennial : flowers in 

 July. Brit. Fl. 4th ed. p. 49. 202. 



7. A favtscens. Yellow Oat-grass. Panicle erect, spreading, much 

 branched ; flowers about three, longer than the calyx ; leaves flat, a 



little downy ; root somewhat creeping. Straws about eighteen inches 



high : panicle of numerous yellowish, shining spikelets. Perennial : 

 flowers in July : grows in dry pastures : common. Eng. Bot. vol. xiv. 

 pi. 952. Eng. Fl. vol. i. p. 166. 203. 



40. LO'LIUM. DARNEL. 



Common receptacle elongated, alternately channelled or exca- 

 vated to receive the spikelets. Calyx many-flowered, of one lance- 

 shaped, permanent chaff-scale. Corolla of two unequal husks, 

 opposite to the calyx ; the outer lance-shaped, somewhat keeled, 

 acute, cleft at the point, the keel terminated by an awn ; the inner 

 elliptical, smaller, with the edges inflected. Nectary of two egg- 

 shaped scales. Filaments hair-like, shorter than the corolla; an- 

 thers oblong, cleft at each end. Germen obtuse. Styles very short ; 

 stigmas feathery. Seed oblong, convex on one side, flat and fur- 

 rowed on the other. Name, folium, of the Romans. 56. 



1. L.pertnne. Common Rye -grass. Red Darnel. Corolla very slightly 



awned ; spikelets longer than the calyx ; flowers lance-shaped. Root 



fibrous : stems several, about a foot high, round, smooth, stiff, with pur- 

 plish tumid joints : leaves linear, pointed, smooth, striated : spike erect, 

 purplish. This plant is subject to considerable variation, as it grows iu 

 rich or poor soil, being from six inches high to nearly three feet, and 

 having the spike with few spikelets, or with a great number closely 

 crowded together, or even having several spikes agglomerated. It is well 

 known to farmers, being extensively cultivated. Perennial : flowers in 

 June and July: grows in meadows and pastures, by road-sides, &c. : 

 common. Eng. Bot. vol. v. pi. 315. Eng. Fl. vol. i. p. 173. 204. 



2. L. temulentum. Bearded Darnel. Corolla with a long awn ; spike- 

 lets shorter than the calyx; flowers elliptical; straw rough. Straws 



two or three feet high, round, rough at the upper part : leaves rough 

 on the upper side : spike from four to six inches long, with a rough stalk. 

 Annual : flowers in July : grows in fields among wheat or barley. The 

 seeds of this plant are said to produce intoxication and fatal convulsions. 

 Eng. Bot. vol. xvi. pi. 1124. Eng. Ft. vol. i. p. 174. When the awn 

 is imperfect, it is the L. arvtnse, White Darnel, of some botanists. Eng. 

 Bot. vol. xvi. pi. 1125. Eng. Fl. vol. i. p. 175. 205. 



