i^^ TRIANDRIA DIGlNiA* 



17. Rigid A. 



P, panicula lanceolata, I Panicle lanceolate, a 

 subramosa, secunda ; ra- little branched, sccund; 

 mulis alternis, secundis. | branches alternate, se. 



Sp. pi. 1. p. 396. I cund. 



P. cristala, Walt. p. 80. 



Root perennial. Stem 2—4 inches high, assurgent, generallj sm* 

 culate, glabrous, rigid. Leaves subulate, 3— l^inches long, glabrous; 

 when drj involute j rigid; sheath generally shorter than the joints; 

 stipules membranous. Panicle 1— U inches long, collected on one 

 side of the stem. Peduncles short, lower ones branching. Spikes 

 linear-lanceolate, 5—7 flowered ; flowers a little remote. Valves f)f 

 the cabjjc keelftd, serrulate; o' the coro//a, rounded, somewhat acutej 

 generally tinged with dark purple. 



Grows in very dry soils. Common around Beaufort. 



flowers April—May. Eigid Poa, 



18. QuiNQUEFiDA. Pursh. 



p. culrao erecto ; pan- I Stem erect ; panicle 

 icula rnajuscula, patente, I large, expanding, some- 

 subspicata ; spiculis quin- I what spiked ; spike 5 

 quefloris, valva exteriore ] flowered, with the exte- 



rollse 3—3 mucronata. rior valve of the corolla 



E 



3 — 5 pointed 



JPursh, 1. p. 81. 



P. pratensis, Walt 



P. Sesleroides, Mich'. 1. p. 68. 



Clayton, p. 13, No. 273 ? Poa flava ? Sp. pi. 1. p. 300. 



Perennial, ^f^m 4 feet high, slightly compressed, glabrous. Lf"^'^ 

 distichous at the base of the stem, 8 -16 inches long, 3— 4 lines 

 Wide, slightly scabrous on the upper surface, serrulate along the 

 margins ; sheath shorter tlian the joints, hairy at the throat. Pa^^f 

 somewhat verticillate near the base, with the branches expanding, oj* 

 vided, and pendulous at the extremities. Spikes on very short pe«- 

 wncles. Valves of the cabja; lanceolate, acuminate, unequal, ^itt 

 the keel scabrous near the snmmlf FAto-io,. ««ivo ..f fhw corMa o'** 



cue. margins apa neiTcs, purple towards the summit. Jinrner!> m..- 

 Stifles 2, shorter than the corolla. Stigmas feathered, purple. 

 There are probably more species than one now mingled uiidcr ttu* 



pame. 



Grows in sandy soils. With us a common grass. „\ 



flowers September— October. Tall-purph Po<('. 



