206 



POACEAE 



23. Poa fendleriana (Steud.) Vasey. 

 Mutton Grass. Fig. 475. 



Eragrostis fendleriana Steud. Syn. PI. Glum. 1 : 278. 



1854. 

 Atropis californica Munro; Thurb. in S. Wats. Bot. Calif. 



2: 309. 1880. 

 Poa californica .Scribn. Bull. Torrey Club 10: 31. 1883, 



not Steud. 1854. 

 Poa fendleriana Vasey; U. S. Dept. Agr. Div. Bot. Bull. 



13=: pi. 74. 1893. 



Tufted perennial ; culms erect, smooth, sca- 

 brous below panicle, 30-50 cm. tall ; sheaths 

 somewhat scabrous ; ligule less than 1 mm. long ; 

 blades mostly basal, involute or folded, scabrous, 

 firm ; panicle long-exserted, narrow, contracted, 

 2-7 cm. long; glumes broad, 3 mm. long, the 

 first 1-nerved; lemmas 4 mm. long, long-pilose 

 on the lower portion of keel and marginal nerves, 

 the intermediate nerves obscure. 



Mesas and rocky hills, in the Upper Sonoran Zone; 

 southern California (Bear Valley, Parish; Owens Valley, 

 Jones; Panamint, Hall & Chandler), east to Wyoming 

 and New Mexico. ^May-June. Type locality: New 

 Mexico. 



24. Poa scabrella (Thurb.) Benth. 

 Alalpais Bluegrass. Fig. 476. 



Poa tcnnifolia Buckl. Proc. Acad. Phila. 1862: 96. 1863, not 



A. Rich. 1851. 

 Atropis scabrella Thurb. in S. Wats. Bot. Calif. 2: 310. 



1880. 

 Poa scabrella Benth.; Vasey, Grasses U. S. 42. 1883. 

 Poa orcuttiaua Vasev, West Am. Sci. 3: 165. 1887. 

 Poa bucklcvana Nasli, Bull. Torrey Club 22: 465. 1895. 

 Poa capillaris Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 



11: 51. /. 11. 1898, not L. 1753. 

 Poa nudata Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 9: 



1. 1899. 

 Poa acutiglumis Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 



9: 4. 1899. 

 Poa limosa Scribn. & Williams, U. S. Dept. Agr. Div. Agrost. 



Circ. 9: 5. 1899. 



Tufted perennial; culms erect, 50-100 cm. tall, 

 usually scabrous, at least below panicle; sheaths 

 scabrous ; ligule i-i mm. long ; blades mostly basal, 

 flat, narrow, usually about 1 mm. wide, la.x, more 

 or less scabrous; panicle narrow, usually contracted, 

 sometimes rather open at base, 5-12 cm. long; spike- 

 lets narrow, 6-10 mm. long; glumes scabrous, 3 mm. 

 long; lemma; 4 mm. long, puberulent or scabrous on 

 back, and more or less crisp-pubescent at base. 



Meadows, open woods, rocks, and hills. Transition Zone; 

 Oregon to northern Mexico, east to Nevada and Arizona. 

 May-July. Type locality: Oakland, California. 



25. Poa gracillima \ ase}'. 

 Pacific Bluegrass. Fig. 477. 



Sporobolns bolandcri Vasey, Bot. Gaz. 11: ii7 . 1886, not 



Poa bolandcri Vasey. 1882. 

 Poa gracillima Vasey, Contr. U. S. Nat. Herb. 1: 272. 1893. 

 Poa sa.vatilis Scribn. & Williams, U. S. Dept. Agr. Div. 



Agrost. Circ. 9: 1. 1899. 

 Poa tenerrima Scribn. U. S. De]it. Agr. Div. Agrost. Circ. 



9: 4. 1899. 

 Poa invaginata Scribn. & Williams, U. S. Dept. Agr. Div. 



Agrost. Circ. 9: 6. 1899. 

 Poa inultnoniac Piper, Bull. Torrey Club 32: 435. 1905. 

 Poa alcea Piper, Bull. Torrey Club 32: 436. 1905. 



Tufted perennial ; culms 30-60 cm. tall, erect from 

 usually a decumbent base ; sheaths smooth ; ligule 

 2-5 mm. long, or shorter on the innovations ; blades 

 flat or folded, lax, smooth, mostly basal ; panicle 

 pyramidal, loose, rather open, 5-10 cm. long, the 

 branches in whorls, the lower 2 to 6. 2-7 cm. long, 

 slender, spreading or sometimes reflexed, naked be- 

 low; spikelets 4-6 mm. long; glumes smooth, the 

 second 3-4 mm. long; lemmas about as long as 

 second glume, minutely scabrous, crisp-pubescent 

 near base, especially on the nerves. 



Cliffs and rocks. Transition and Arctic Zones; Alaska to 

 tlie southern Sierra Nevada. June-Aug. Type locality: 

 Mount Paddo (Adams). 



