THIANDRIA, DIOTNIA. 59 



Blue-grass* Wire-grass, 



A well-known grass. It makes excellent hay. Root peren- 

 nial and repent. Middle of June. 



3. P. panicle fasciculated ; spikes very long, nearly rtpt t m * 

 sessile, many-flowered ; flowers oblong acute Mul '' 

 loose; leaves short pubescent; culm branched, 

 creeping. Mich* 



P. hypnoides, Lam. encvcl. 5. p« 87. 

 Icon. Mich. t. 11. (excellent.) 



Creeping Meadow-grass. 



A most delicate and beautiful little grass, about a span high, 

 with a dichotomous, creeping geniculate, assurgent culm , and 

 subulate opposite leaves. Close to the margin of the Schuyl- 

 kill, on the western shore, towards the falls, rare. July, and 

 August. 



4. P. panicle loose, expanding, capillary 7 ; spike 3 — capiiiaris. 

 5 -flowered ; flowers pubescent ; leaves hairy ; 



culm very much branched. Sp.pl' 

 P. angulata, Walt \ 



Hair- panicle d Meadow- grass. 



Generally under a foot high, but varying in size exceedingly. 

 One of the most common species. Infields. Annual. Au- 

 gust. 



5. P. culm a span high oblique and procumbent, i' iloM i 

 jointed, somewhat angular. Leaves Linear Kanceo- Mu 



late, 5-nerved, hairy at the base. Ligula bearded. 

 Shaath striate glabrous, hairy at the neck. Pa- 

 nicle erect, at length diffuse. Lower branches of 

 the panicle aggregated 4 — 6, the upper ones soli- 

 tary flexuous, with joints hairy at the base. Calix 

 2-valved, 4 — 6 — 8 — 12-flowered, purplish at the 

 apex. Cor. 2-valved, the valves somewhat obtuse, 

 inflated, purplish, smooth at the base. Mufil. 

 P. pectinacea, Mich. 



Hairy Meadow-grass. 



