TRIANDRIA— DIGYNIA. Glyceria. 119 



nor is there any prominent keel. Nect. deeply and acutely 

 cloven, tumid at the base. Stigm. apparently like the last. I 

 have not examined them in a recent state, the particular struc- 

 ture of that organ not having been resorted to for important di- 

 stinctions, till Mr, Brown described it in my second species of 

 Glyceria. xMr. Curtis indeed, as well as Mr. Sowerby, faithfully 

 represented what they saw in the respective plants, and accord- 

 ing to them the stigmas of many grasses appear to be repeatedly 

 subdivided. 



5. G. procumbens. Procumbent Sea Sweet-grass. 

 Panicle lanceolate, unilateral, two-ranked, close, with rough 



stalks; the main one cylindrical. Florets about five, 



bluntish, five-ribbed. 



Poa procumbens. Curt. Lotid.fasc. 6. ^ 1 1. Fl. Br. 08. EnH. Bot. 



r. 8. ?. 532. Knappt. 49. Hook. Scot. 33. ° 



P. rupestris. With. 146. t. 26. 

 Gramen maritimum, paniculis asperis cristatis. Bocc. Mus. f. 1 . 1 35 ^ 



loliaceis, t. 95. 



In waste ground near the sea. 



At the foot of St. Vincent's rocks, and near the floating dock, 

 Bristol, as also on the coast of Essex. Curtis. On Scarborough 

 pier. Sir T. Frankland, Bart. Just over the bridge at Yarmouth. 

 Mr. D. Turner. I have the same from Amsterdam, and Boc- 

 cone's synonym shows this plant to be found also in Sicily. 



Annual. July, August. 



Root fibrous. Whole plant glaucous and rigid. Stems several, 

 more or less prostrate, a span or more in length, leafy, smooth. 

 Leaves flat, ribbed j rough above ; smooth beneath.' Sheaths 

 long, tumid, ribbed, smooth. Stipula rather pointed, often torn. 

 Branches of the panicle, as well as the spikelets, two-ranked, 

 turned all one way. Valves of the cal. blunt, very unequal ; 

 the outermost with 3 principal ribs. Outer valve of the cor. cy- 

 lindrical, witli 5 ribs, the central one most prominent towards 

 the summit, which is purplish, membranous, and obtuse ; inner 

 valve narrow, bristly at the lateral ribs. Nect. divided, sheathing 

 the germen. Styles \try short. S7i^?;ms branched and compound. 

 Seed elliptic-oblong, pointed, flattened^ loose. 



6. G. rigida. Hard Sweet-grass. 



Panicle lanceolate, unilateral, two-ranked, close, with 

 smooth stalks ; the main one bordered. Florets about 

 seven, acute, scarcely ribbed. 



Poa rigida. Linn. Sp. PI. \0l. mild. v. \. 396. Fl. Br. 99. Engl. 

 Bot. V. 20. M371 . C7trt. Lond.fasc. 2. t. 4. Knapp t. 48. Hook, 

 Scot. 33. Schrad Germ. v. 1 283. Host Gram. v. 2. 53. /. 74. 



