TRIANDRIA— DIGYNIA. Arundo. 171 



valves lanceolate, acute, of a pale bronzed purple, the keel 

 roughish. Corolla not much above half as long, membranous, 

 white ; both valves notched at the summit, the larger bearing a 

 very small, rough, nearly terminal, awn. Hairs from the base of 

 the corolla, which they exceed in length. 



4. A. stricta. Smallest Close Reed- 

 Calyx single-flowered, ovate, scarcely longer than the co- 

 rolla. l*anicle erect, close. Flowers scattered, spread- 

 ing every way, with a dorsal awn. Hairs shorter than 

 the corolla. Stipula very short. 



A. stricta. Schrad. Germ. u. 1. 215. <. 4. /. 5. Engl' Bat. v.ZO- 



t. 21 60. Comp. 20. Hook. Scot. 27. 

 A. neglecta. Ehrh. Calarn. 1 18. Sm. Tr. of Linn. Sac. v. 10. 337. 



In marshy ground in Scotland. 



In the White Mire, a mile from Forfar. Mr. G. Don. 



Perennial. June. 



Root creeping. Stem scarcely 2 feet high, very slender and smooth, 

 with 2 joints. Leaves narrow, sharp-pointed, rough on the upper 

 side. Sheaths quite smooth, slightly striated. Stipula scarcely 

 prominent, except that of the uppermost leaf, which is very 

 short, abrupt, slightly notched, finally torn. Panicle from 3 to 

 5 inches long, slender, close, except when in full flower, of a 

 purplish brown ; the branches half-whorled, roughish. Calyx- 

 valves ovate, acute, not pointed, single-ribbed ; sometimes be- 

 sprinkled with short hairs. Corolla nearly as long as the calyx, 

 both valves membranous, flat, abrupt, and notched ; the outer 

 with 2 ribs near each margin, and a straight awn from the middle 

 of its back, scarcely overtopping the glume ; inner smaller, with 

 solitary, marginal ribs. Hairs but half the length of the largest 

 valve, a little elongated as the seed ripens. 



5. K.arenaria. Sea Reed. Marram. Sea Mat-weed. 



Calyx single-flowered, longer than the corolla. Panicle 

 spiked. Flowers erect, slightly awned. Leaves involute, 

 sharp-pointed. 



A. arenaria. Unn. Sp. Pl.\2]. Willd. v. 1 . 457. Fl. Br. 1 48. Engl. 



Bot. V. 8. t. 520. Knapp t. 99. Mart. Rust. t. 32. Hook. Scot. 27. 



Dicks. H. Sicc.fasc. 12. 5. Schrad. Germ. v. 1.221. t. 5. f. 2. 



Fl. Dan. t.9\7. Ehrh. Calam. 17. 

 Calamagrostis arenaria. Roth Germ. v. 2. p. 1. 93. With. 123.^ 

 Gramen sparteum spicatum, foliis mucronatis longioribus, vel spicS, 



secalina. RaiiSyn. 393. Bauh. Theatr. &7 .f. 

 G. spicatum secalinum maritimum maximum spic& longiore, 



Scheuchz. Agr. 138. t.3.f.S. 



