MANUAL OF THE GRASSES OF THE UNITED STATES 



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terminal segment of awn 8 to 12 mm long; palea narrowed above, 

 nearly as long as the lemma, 2-toothed. % — Open grassland, open 

 woods, and rocky slopes, in the mountains, mostly below timber line, 

 Alberta to Xew Mexico (fig. 604). 



6. Danthonia californica Boland. 

 California oatgrass. (Fig. 605.) 

 Culms 30 to 80 cm tall, glabrous, 

 tending to disarticulate at the nodes; 

 sheaths glabrous, pilose at the 

 throat; blades mostly 10 to 20 cm 

 long, flat or, especially those of the 



Figure 604.— Distribution of 

 Danthonia parryi. 



innovations, involute, glabrous; pan- 

 icle bearing mostly 2 to 5 spikelets, 

 the pedicels slender, spreading or 

 somewhat reflexed, more or less 

 flexuous, 1 to 2 cm long, a rather 

 prominent pulvinus at the base of 



each; glumes 15 tO 20 Him long: Figure 60S— Danthonia parryi. Panicle, X 1; 

 / i i n 1 floret, X 5. (Hitchcock 10987, Colo.) 



(rarely less or more); lemmas, ex- 

 cluding awns, 8 to 10 mm long, pilose on the lower part of the 

 margin and on the callus, otherwise glabrous, the teeth long-aristate ; 

 terminal segment of awn 5 to 10 mm long; palea subacute, usually 



extending beyond base of awn. 

 % — Meadows and open 

 woods, Montana to British 

 Columbia, south to Colorado 

 and California (fig. 606). 



Figure 606.— Distribution of 

 Danthonia californica. 



Danthonia californica var. 

 Americana (Scribn.) Hitchc. 

 Culms on the average shorter, 

 itei«B(WR-^jtt^^n^ c ]g^xirfl«^ the tufts usually more spread- 

 ing; foliage sparsely to conspic- 

 uously spreading-pilose; spikelets on the average smaller, but large 

 plants with large spikelets occur, with conspicuously pilose foliage. 

 pi —Montana and Wyoming to British Columbia", south to Cal- 

 ifornia ; Chile. D. macounii Hitchc. appears to belong here, differing in 



