TRIANDRTA. DIGYNIA. 13 



p. piLOSA. Muhl. Stem oblique ;spikelets linear, S to 10 flowered; axils, and throat of the shesth?, pilose. 

 Synon. P. pectinacea. Mx. "Rachi deflorata valvulis flosculorum interioribus persistenfibus pec/ iiiaYj." 

 Fl- Latter end of July. Fr mat. Middle of August. 



Hab. Uplands, and roadsides: near the Friends M. H. West Chester: frequent. 4 to9 inches Ion- 

 p. OBTUsA. MM. Stem erect, striate; panicle dense ; spikelets crowded, 3 to 5 flowered; glimies otiusc? 

 Fl. Beginning of June. Fr. -mat. 



Hab. Grassy banks: Race bank at Mill town: freqi'.ent. 12 to 20 inches high. 

 Obs. The name, obtusa, does not appear to be happily selected. 

 43. BRIZA. Gen. PI. 115. 

 [Gr. Brizo. to nod; in reference to the nodding, or waving spikelets.] 

 Spikelets distichous. Cor. valves ventricose, cordate, obtuse; interior valve minute. 

 B. ERAGRosTis. Miihl. Stem decumbcnt, geniculate; spikelets ovate-lanceolate, pedicellate. 

 Synon. Poa raegastachya. Nutt. F^^Zg•o— Quake-grass. 



Fl. Beginning of August. Fr. mat. Last of September. 



Jtab. Gardens, roadsides, &c. frequent. 12 to 18 inches in length. 



Obs. A foreigner? Spikelets of a leaden, or blueish green color; as Dr. Barton has well remarked. 

 44. WINDSORLl. Nutt. Gen. 99. 

 [Dedicated by Mr. Nuttall to his friend Jahn Windsor; an English Botanist.] 

 Cal. valves keeled, cuspidate. Cor. dorsal valve 5 toothed. Seed calcelform, corrugate. 

 W. P0.5*0RMis. Nutt. Stem erect; panicle large, expanding; spikelets oblong, 5 flowered. 

 Synon. Poa sesleroides. Mx- & Muhl. Poa quinquefida. Ph. & Ell. Vulgo—Red top. 

 Fl. Beginning of August. Fr. mat. Latter end of September. 



Hab. Hilly old tields, and roadsides: Barrens: frequent. 3 to 5 feet high: panicle purple. 



Obs. Pursh speaks of this p:rass as being very valuable, and productive: but its culms appear to me to 

 be too much like those of Andropogon (with which it associates,) to be of much value. 



45. DANTHONLV. Nutt. Gen. 100. 



[ "J 



Cal. valves as long as tiie spikelet. Cor. outer valve setaceously bifid, with a central awn, contorted at base. 



D. spiCATA. Nutt. Flowers racemose; spikelets alternate, pedunculate, 6 or7 flowered; leaves subulate. 

 Synon. A\ena.syi\c?X?i. IVilld. Muhl. &!. Ph. A. glumosa. Mx? Fu/g-o— Oat-grass. WUd-oats. 

 Fl. Middle of June. Fr. mat. Beginning of July. 



Hab. Dry, sandy banks; woodlands and roadsides: frequent. 1 to 2 feet high. 

 46. FESTUCA. Nutt. Gen. 101. 

 [A Latin name for the shoot., or stalk of a tree, or herb; applied to this genus.] 

 SptA-eZeZs oblong, distichous; glumes acuminate. Cor. outer valve entire, sometimes awned, 



F. TENELLA. Ell. Panicle simple, rather secund; spikelets 6 to 8 flowered, awned; leaves linear-setaceout. 



Synon. F. bromoides. Mx. Smith, Flor. Brit? Fw/g-o— Barren Fescue-grass. 



Fl. Last of May, and after. Fr. mat. Latter end of June. 



Hab. Dry woodlands: Parker's woods; Barrens: frequent. A slender, brown grass: 6 to 12 inches high. 



F. ELATioR. 3Tahl. Panicle branched; spikelets ovate-lanceolate, acute, 4 to 8 flow€red, awnless, glabrous-. 



Vulgo—TaW l<"e^cue-grass 



/Y. Beginning of June. Fr- mat. Beginning of July. 



Hab. Fields, and meadows: common. 2 to 3 feet high. 



Obs. This grass, which is believed to be a foreigner, affords excellent food for cattle; and might, perhaps, 

 be cultivated to advantage — though it is alleged, (See IVii tiering,) tliat " in a cultivated state, it is nearly 

 incapable of producing perfect seeds;" and is therefore suspected of being a hybrid. 



F. FLUiTAivs. Slidil Panicle long, loose; spikelets appressed; outer glumes awnless, nerved, subcrenate. 



Vulgo— River Fescue-.<;rass. 



Fl. Beginning of June. Fr mat. Last of June. 



Hib. Ponds, and wet places: Brandywine; Dungeon bottom: frequent. 4 to 5 feet high. 



F. NUTANS. Muhl Panicle diffuse, slender; k>wer branches in pairs, upper ones single; spikelets awnless, 



Fl. Beginning of June. Fr. mat. Last of June. [3 to 5 flowered . 



Hab, Woodlands, along Br.\ndy>vine: not very commen. About 2feethish. 



