HOBDEUM. LOLITJM. 513 



48. HOB/DEUM Linn. Barley. 



1. H. sylvat'icum (Huds.) ; gl. all awlshaped not ciliate rough, 

 lateral Jl. perfect, middle fl. often barren, lower pale with an 

 awn of twice its length. P. 1 30. Elymus europaus Linn., Srn., 

 E. B. 1317. About 2 ft. high. Spike subcylindrical. Middle 

 fi., if barren, with shorter gl. having involute edges, thus ap- 

 pearing setaceous. The spikelets have a second fl. occasionally. 

 Woods and thickets on a calcareous soil, rare. P. VII. VIII. 



E. 



2. H. nodosum (L.) ; gl. all setaceous not ciliate rough, lateral 

 -ft. imperfect, lower pale of fertile middle fl. with an awn of 

 about its length. E. B. 409. P. 11. H. praten'se (Huds.) ed. 

 viii. Often 2 ft. high. Spike compressed, erect. Gl. of lateral 

 fl. shorter. Damp meadows. P. VII. E. S. I. 



3. H. murinum (L.) ; gl. of the middle spikelet linear-lanceo- 

 late ciliate of the lateral ones setaceous rough, lateral fl. imper- 

 fect, E. B. 1971. P. 10. Spike often slightly nodding, 

 compressed. Height 12 18 in. Awn longer than the lower 

 pale. Lateral gl. sometimes slightly ciliate. /3. arenarium 

 (Bab.) ; lower part of the st. buried, lengthened, branched and 

 rooting, thus appearing to creep. Waste places. /3. Loose 

 sand. B. VI. VII. E. S. I. 



4. H. marinum (Huds.) ; gl. rough, inner gl. of the lateral Jt. 

 half-ovate the rest setaceous, lateral fl. imperfect. E. B. 1205. 

 P. 10. H. maritimum (With.) ed. viii. Spike thick, erect, 

 subterete. Pastures and banks near the sea. A. VI, E. S. 



49. LEPTU'KUS R. Br. 



1. L. Jilifor'mis (Trin.) ; spike cylindrical-subulate, gl. 2 

 equalling or slightly exceeding the flowers. Rottbb'ellia Sm., 

 E. B. 760. P. 2. St. 26 in. long. Spike long, slender 

 straight or slightly curved. [L. incurvatus (Trin.) is apparently 

 only found as a ballast plant.] Gravelly and waste places near 

 the sea. A. VII. E. S. 



50. LO'LIUM Linn. Rye-grass. 



1. L. peren'ne (L.) ; with leafy barren shoots, edges of young 

 1. simply folded, spikelets 3 11-flowered, gl. equalling^ the 

 lowest fl., lower pale usually awnless, E. B. 315. P. 65. 



z 5 



