CL, III.] TKIANDKIA DIGYNIA. 91 



5. A.alpina. Alpine Oat-grass. Panicle erect, slightly branched ; 

 flowers about five, longer than the calyx, with their stalk bearded 



under 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. Gr. 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. 



Q.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. Dis- 

 covered by Mr. Stuart Murray, in Glen Sannox, Arran. Perennial : 

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



7. A. flavescens. 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 ex- 

 cavated 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 ; anthers oblong, cleft at each end. Germen 

 obtuse. Styles very short; stigmas feathery. Seed oblong, 

 convex on one side, flat and furrowed on the other. Name, 

 lolium, of the Romans. 56. 



1 . L. perenne. 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 purplish tumid joints : leaves linear, pointed, 

 smooth, striated : spike erect, purplish. This plant is subject to 

 considerable variation, as it grows in 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, byroad-sides, &c. : common. Eng. 

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



2. L. temtilentum. Bearded Darnel. Corolla with a long awn ; 



spikelets shorter than the calyx; flowers elliptical; strawrough. 



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. Fl. vol. i. 

 p. 174. When the awn is imperfect, it is the L. arvense, White 

 Darnel, of some botanists. Eng. Bot. vol. xvi. pi. 1125. Eng. Fl. 

 vol. i. p. 175. 205. 



