32 



i^ 



Phalaris artindinacea T.. (Rked Can.\kv-(;i;ass).— A tiill, luiiidsomo grass, 3 to 5 

 feet Li^b, willi ;imple, fiieen leaves and loiij;, close jjauides. 1 1 occurs in wet 

 ground along ditches and creek banks, in shallow bogs and ponds; nowhere 

 observed in abundance, and therefore in its nativ*^ state of little economic 

 importance. .lobnson's Kanch, Big Jjarainic, August 7 (3910) ; Grand Encamp- 

 ment Creek, August 13 (3987). 

 Savastaua odorata Scrihn. (Seneca-grass, fig, 4).— A small grass, 6 to 12 inches 

 high, with largo heads; whole plant emits a delightful fragrance. It occurs 



in cold, swampy ground from 

 middle to high altitudes, some- 

 times in such quantity as to 

 constitute a perceptible part 

 of the forage. Willow Creek, 

 May 22 (2908). 

 Aristida fasciciilata Torr. (PuR- 

 I'i,eI>eari>-c;kass). — A closely 

 tufted grass, with slender, 

 very numerous stems, short, 

 sh'Tider loaves, the heads with 

 long, divergent awns. Not of 

 frequent occurrence in the 

 State, hut in one locality very 

 abundant, where it occui)ied 

 the dry foothills, especially 

 the loose, broken ground. 

 Pine Bluff's, July 6 (3617). 

 Stipa Columbiana Macoun (Co- 

 lumbian Needle-grass). — A 

 bunch grass with numerous 

 long leaves, the ui)per part of 

 the stems naked and hearing 

 a long i)aniclo with awns of 

 moderate length, 2 to 3 feet 

 high. It is a rare grass and 

 was sparingly found in scat- 

 tering bunches in the o])en 

 woods on the Medicine Bow 

 River, August 20 (4074). 

 Stipa comata Trin. vV Rupr. 

 (Neeole-grass). — One can 

 scarcely think of this tufted 

 grass, with its long, twisted 

 awns and barbed seeds, as 

 anything butai»est,but.stock- 

 nien assert that it is valuable 

 for pasture before it heads, 

 and that if cut after the "seeds" have dropped it forms a good quality of hay. 

 It is very abuiulant on the plains and in the dry foothills of the eastern part of the 

 State. Pine Blutl's, .July 5 (3G03). 

 Stipa nelsoni Scribn. (Nelson's Nkedi.e-gisass). — This grass belongs to the sum- 

 mer range especially, but it was also secured within the l\cd Desert. In the 

 wooded, mountain areas it attains to greater luxuriance and is of more frequent 

 occurrence. Woods Creek, August 9 (3963); Battle Lake, August 17 (1059 and 

 4060). 



Fi(i. 3.— Switfh-graas (Panicum virijatum) : a, apiki^ets 

 b, Htaininalo lioret ; r, floret ; d, auterior view of saino. 



