TRIANDRIA— DIGYNIA. Triticum. J 81 



The florets in all my British specimens are smooth, but in Ehrhart's, 

 from Hanover, they are partly besprinkled with soft hairs. This 

 is indeed a most trifling variety, as Professor Schrader consi- 

 ders it. 



3. H. maritimum. Sea Barley. Squirrel-tail-grass. 



Lateral flowers imperfect, with shorter awns; the inner 

 valve of their calyx half-ovate. 



H. maritimum. With. 172. Fl. Br. 156. Engl. Bot. v.\7. t. 1205. 

 Knapp t. 106. Hook. Lond.fasc. 1. t.43. Scot. 46. Mart. Rust. 

 t.44. Schrad. Germ. v.\. 406. Vahl Symb. v. 2.25. Host Gram, 

 v. 1. 27. t. 34. Pourret Act. Tolos. v. 3. 320. 



H. marinum. Hucls. 57. Dicks. H. Sicc.fasc. 5. 4. 



H. geniculatum. Allion. Pedem. v. 2. 259. t. 9 1 ./. 3. 



H. rigidum. Roth Catal. v. 1 . 24. 



Gramen secalinum palustre et maritimum. Rail Syn. 392. 



G. secalinum maritimum glaucifolium, spicis brevioribus. Moris. 

 v.3. \79.sect.8. t.6.f.b. 



G. spicatum secalinum maritimum minus. Scheuchz. Agr. 18. 



G. hordeaceum a maritimis pumilum. Pink. Phyt. t. 33. /. 2, bad. 



In pastures and sandy ground near the sea. 



Annual. June, July. 



This species most resembles H. murinum in general habit, but is on 

 the whole rather smaller and more glaucous. The awns are all 

 rougher, with minute bristly teeth. This roughness, and the 

 great brittleness of the main stalk of the spike, cause consider- 

 able inconvenience to horses in whose hay this grass chances to 

 be intermixed. It sticks in small fragments to their gums, and 

 produces inflammation. Luckily the plant is not of common 

 occurrence ; but in the isle of Thanet, where it abounds, the 

 effect just mentioned is notorious. Mr. Curtis records this cir- 

 cumstance in FL Lond. fasc. 5, under t. 9, referring it to the 

 common H. murinum, for he was not then practically acquainted 

 with the difference between these two grasses, nor does he advert 

 to it ; but he subsequently knew them well, and I have speci- 

 mens from himself. The half-ovate form of the innermost valve 

 of the calyx, clearly distinguishes H. maritimum, as Hudson well 

 remarked. The two species, though similar, are obviously and 

 sufficiently distinct. 



61. TRITICUM. Wheat. Wheat-grass. 



Linn. Gen. 40. Juss. 32. Fl. Br. 157. Lam. t.49. Gcertn. t.Sl. 



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

 continuous, or somewhat jointed, toothed alternately at 

 each side, wavy, compressed. Spikelets solitary at each 

 tooth, lateral, contrary to the main stalk, many-flowered. 



