"90 Kansas Academy of Science. 



vided spikes; tribe i, Festucese, with spikelets pedicellate in racemes, or in 

 dense or loose panicles; and tribe k, Hordeese, with spikelets sessile alter- 

 nately on opposite sides of a zigzag channeled rachis. 



Tribe e. Phalaridese. Canary-grass Tribe. Inflorescence spicate or panic- 

 ulate; spikelets crowded on the spike, one- rarely three-flowered 

 empty scales of the involucel below the first articulation of the 

 rachilla, large and showy; the two sterile glumes small and narrow, 

 rarely subtending staminate flowers; the fertile glume with a two- 

 nerved or nerveless palea and a perfect flower. 



272. Phalaris arundinacea L. Reed Canary-grass. The variety picfa L., 

 ribbon-grass, is frequent in gardens and spreads a little where planted; but 

 does not run wild. 



273. Phalaris caroliniana Walt. Carolina Canary-grass, Escapes from 

 cultivation occasionally for a year or two; not seen as a wild grass. June. 



274. Phalaris canariensis L. Canary-grass. Often escapes from culti- 

 vation for a short time. July. 



275. Anthoxanthum odoratum L. Sweet Vernal-grass. An introduced 

 grass, growing freely in lawns where planted, but not disposed to run wild. 



276. Oryzopsis micrantha Thurb. Small-flowered Mountain-rice. Dry 

 soils, Cheyenne county; rare. June. (S) 



277. Oryzopsis asperifolia Mx. White Mountain-rice. Woods, N. E. 

 K. ; occasional. June. (S) 



278. Oryzopsis melanocarpa Muhl. Black Mountain-rice. Rocky woods, 

 Cherokee county; rare. July. (A) 



279. Oryzopsis membranacea Vasey. Silky Mountain-rice. Sandy or 

 gravelly prairies, not far from streams, Cheyenne, Sherman, Wallace, and 

 Logan counties; rare. July. (AB) 



Tribe/. Agrostidese. Ree l-grass Tribe. Spikelets perfect, one-flowered, 

 the involucel scales as long as or longer than the floral glume; ra- 

 chilla sometimes prolonged behind the palea into a naked or plumose 

 bristle; palea two-nerved, double-nerved, one-nerved, nerveless or 

 wanting. 



280. Stipa viridula Trin. Wild-oat Weather-grass. Dry grounds, N. 

 K. ; infrequent. July. (AS) 



281. Stipa vaseyi Scribn. {S. viridula vaseyi.) "Sleepy-grass"; 

 Stout Weather-grass. Said to grow in the Cimarron river bottoms in Mor- 

 ton and Stevens counties. June. 



282. Stipa avenacea L. Black-oat Weather-grass. Dry woods and 

 thickets, E. K. ; frequent. May. (ASU) 



283. Stipa comata Trinius & Ruprecht. Thread-needle Weather-grass. 

 Dry plains, W. K.; occasional. June. (ASU) 



284. Stipa Spartea Trin. Porcupine Weather-grass. Low prairies, E. 

 K.; common. June. (ASU) 



285. Aristida dichotoma Mx. Poverty-grass. Sterile soils, E. K., west 

 to Hutchinson; rare. Middle (longest) awn at right angles to spikelet. 

 August. (ASU) 



286. Aristida curtissii Nash. Atlantic Poverty-grass. Reported from 

 Kansas by Nash. 



