458 



GRAMINEjE. 



POA- 



Perennial. Culm 1-2 feet high, smooth, somewhat cespitose. Radical leaves long and 

 narrow ; those of the culm usually 2, flat, a little rough on the margin : ligule truncate or 

 acuminate. Panicle small ; the lower branches spreading, mostly in pairs or threes : upper 

 ones somewhat racemose. Glumes unequal, smooth. Flowers a little distant, slightly 

 pubescent. Lower palea oblong-lanceolate, indistinctly 5-nerved. Caryopsis linear-oblong, 

 somewhat channelled on one side. 



Moist rocky places, western part of the State (Dr. Sartwell). Fl. April - May. 



7. Poa nemoralis, Linn. Wood Meodoio-grass. 



Panicle slender, a little secund, loose ; the branches rough, 2-5 together ; spikelets 

 ovate-lanceolate, about 3-flowered ; the flowers rather distant, hairy and slightly webbed at 

 the base, acute, very obscurely nerved ; culm and leaves smooth ; ligule almost wanting. — 

 Linn. sp. 1. p. 69; Engl. hot. t. 1265 ; Pursh, fl. 1. p. 79?; Torr. fl. 1. p. Ill ; Beck, 

 hot. p. 410 ; Kunth, euum. 1. p. 353. 



Rhizoma creeping. Culm 2 feet high, slender. Leaves narrow, pale green. Panicle 5-8 

 inches long, very loose, sometimes a little nodding ; the branches semiverticillate, usually 

 several together, flexuous. Spikelets usually 3-flowered, mostly seated on the extremity of the 

 branches, loose ; the flowers finally rather distant on the rachilla. Glumes linear-lanceolate, 

 unequal, very acute. Lower palea lanceolate, smooth on the sides, hairy on the back below : 

 upper one strongly bicarinale. Stamens 3 : anthers yellow. 



Western part of the State (Dr. Sartwell). Fl. June - July. A native also of Europe. 



8. Poa serotina, Ehrh. Red-top. 



Panicle elongated, diffuse, at length somewhat nodding at the apex, the branches mostly 

 verticillate in fives ; spikelets ovate-lanceolate, 2 - 3-flowered ; flowers a little webbed at the 

 base, yellowish at the tip, obscurely 5-nerved ; culm and leaves smooth ; rhizoma creeping. — 

 " Gaud. Agrost. 1. p. 108 " ; Torr. fl. 1. p. 110; Beck, hot. p. 410 ; Trin. in act. Petrop. 

 6 ser. 1. p. 385. P. palustris, Muhl. gram. p. 150. P. fertilis, "Host. Gram. 3. p. 10. 

 t. 14," ex Kunth, enum. 1. p. 353. P. crocata, Michx. fl. 1. p. 68 ? 



Perennial. Culm 2-3 feet high. Leaves flat, 3-6 inches long, about 2 lines wide, 

 smooth: ligule elongated. Panicle 6- 10 inches long; the branches rough and flexuous. 

 Spikelets often 2-flowered. Glumes narrowly lanceolate, very acute, rough on the keel, 

 nearly as long as the lowest flower. Palese lanceolate ; the lower one rather obtuse, of a 

 dull yellowish color at the tip, entire, slightly hairy at the base : upper palea very acute. 

 Stamens 3. 



Wet meadows, valley of the Hudson and western parts of the Slate. FL June. This 

 agrees very well with the European P. serotina, and is regarded by most of our botanists as 

 the P. crocata of Michaux ; but in the latter the spikelets are 4 - 5-flowered. 



