ljo TKIANDRIA— DIGYNIA. Poa, 



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. 



Poarigida. Linn. Sp. PI 101. Wtild. v. 1 . 396. FLBr.99. Engl. 



Bot. v. 20. 1. 1371. Curt. Lond.fasc.2. tA. Knappt. 48. Hook. 



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

 Graraen exile duriusculum, in rauris et aridis proveniens. Ran 



Syn. 410. 

 G. panicula multiplici majus. Bauh. Prodr. 6.f, bad. Theatr. 31 . 



/. 32, bad. Scheuchz. Agr. 27 \. t. G.f. 2. 

 G. minus duriusculum. Ger. Em. 4./, bad. 

 G. loliaceum murorum duriusculum, spica erecta rigida. Moris. 



v.3. 182. sect. 8. t.2.f.9. 

 G. filiceum rigidiusculum. Vaill. Par. 92. t. 18./. 4. 



On walls and dry gravelly banks, not uncommon. 



Annual. June. 



Root fibrous, woolly. Stems several, 3 — 5 inches high, peculiarly 

 rigid and wiry, as is also the, not inelegant, panicle. Leaves 

 short, narrow and pointed j rough on the upper side. Sheaths 

 ribbed, smooth. Stipula elongated, blunt and mostly torn. 

 Florets cylindrical, minutely pointed, furnished with a slight keel 

 near the summit, but rarely with any traces of ribs. Calyx acute, 

 strongly keeled. Anth. short, prominent. Styles scarcely any. 

 Stigmas large, tufted. 



The whole plant generally assumes a brown or purplish hue, re- 

 maining bleached and dry after Midsummer. Professor Schrader 

 speaks of it as very rare in Germany, nor does Haller mention 

 this species at all. Ehrhart published a most unnatural culti- 

 vated dried specimen, at no. 2 of a collection, whose title I know 

 not, and which was never perhaps continued. 



45. POA. Meadow-grass. 



Linn. Gen. 3-1. Jim. 32. Fl.Br.9b. Lam. t. 45. 



Cal. of 2 unequal, awnless, acute, ovate, folded, keeled valves, 

 containing an ovate, imbricated spikelet, of several awn- 

 less, alternate, 2-ranked, perfect jlorets, often connected 

 at their base by a condensed web, of long, white, cottony, 

 filaments. Cor. of 2 unequal valves ; the outer ovate, 

 acute, strongly keeled, compressed, sometimes ribbed, 

 entire, more or less membranous at the summit, as well 

 as at the edges, which are flat, not inflexed ; inner nar- 

 rower, with 2 nearly marginal ribs, the edges membra- 

 nous, inflexed, the summit cloven. Ned. a deeply-cloven 

 cale. Fihun, capillary, longer than the corolla, Anth. 



