TRIANDRIA— DIGYNIA. Rottboliia. 175 



at the edges, rising above the spikelets, generally attended, in 

 the lower ones, with a short elliptical inner valve, pressed close 

 to the channel in the stalk. Florets about 6. Outer valve of the 

 corolla elliptical, concave, with a dorsal awn, longer than itself j 

 inner rough at the folds. Seed elliptical, a little flattened, with 

 a furrow along its upper side, where it is firmly coated by the 

 inner valve. 

 The seeds are of very evil report, for causing intoxication, in men, 

 beasts, and birds, and bringing on fatal convulsions. Haller 

 speaks of them as communicating these properties to beer. 



3. L. arvense. Short-awned Annual Darnel. 



Corolla slightly awned. Spikelets as long as the calyx. 

 Florets elliptical. Stem very smooth. 



L. arvense. With. 168. Fl. Br. 151. Engl. Bot. v. 16. t. 1 125. 



Knapp t. 102. Hook. Scot. 45. Schrad. Germ. v. 1 . 399. Host 



Gram. v. 3. 17. t.25. 

 L. temulentum. Huds. 55. 

 L. temulentum, a variety. Sincl. 301. 

 L. verum Gesneri. Moris, v. 3. 181. sect. 8. t. \.f. with a spike of 



the last, annexed. 



In fields, but not common. 



In Scotland. Mr. J. Mackay, and Mr. Hopkirk. Near Waltham- 

 stow. Mr. E. Forster. 



Annual. July. 



Rather smaller and smoother than the preceding, of which it is 

 probably but a variety. The awns, represented too long in Engl. 

 Bot., are either wanting, or at most very short, lax and weak. 

 There are sometimes 2 little inner valves to the calyx ; some- 

 times none at all. Schrader observes that the upper part of the 

 stem, and the common stalk of the spike, are not invariably 

 smooth. 



58. ROTTBOLLIA. Hard-grass. 



Linn. Suppl. 13. Schreb. Gen. 721. Juss.3\. Fl. Br. 151. Lam. 

 t.48. 



Common receptacle, or main stalk, many-flowered, elongated, 

 jointed, finally separable, with a channel in each joint, al- 

 ternately disposed, to receive the Jiorets, which are mostly 

 2 in each channel, of a different structure from each other, 

 1 only being always perfect. Cal. of 2 parallel valves, 

 opposite to the channel, lanceolate, spreading whilst in 

 blossom. Cor., in the perfect floret, of 2 lanceolate, acute, 

 membranous, nearly equal, valves, inflexed at the edges ; 

 in the other similar, if furnished with stamens ; if not, 

 merely a rudiment, or scale. Nect. of 2 acute scales. 



