POACEAE 



10. Calamagrostis koelerioides \ asey. 



Tufted Pine-grass. 



Fig-. 358. 



Calamagrostis koelerioides Vasey, Bot. Gaz. 16: 147. 1891. 



Culms erect, cespitose, rather slender, smooth, or 

 scabrous just below the panicle, 40-80 cm. tall; sheaths 

 smooth ; ligule 2-3 mm. long, obtuse ; blades fiat, sca- 

 brous on both surfaces, 5-15 cm. long, 2-3 mm. wide; 

 panicle spikelike, mostly purplish, 5-10 cm. long ; 

 glumes equal, acuminate, about 5 mm. long ; lemma 

 a little shorter than the glumes, the awn bent, shorter 

 than the glumes but exserted at one side, the callus 

 hairs rather scant, one-fourth to one-third as long as 

 the lemma. 



Dry hills and banks, Arid Transition Zone: Oregon to 

 southern California. July-Aug. Type locality: Julian, Cali- 

 fornia. 



11. Calamagrostis rubescens Buckl. 

 Pine Gras.s. Fig. 359. 



Calamagrostis rubescens Buck!. Proc. Acad. Phila. 1862: 92. 



1863. 

 Deyeu.via rubescens Vasey, Grasses U. S. 28. 1883. 

 De'yeuxia cusickii Vasey, Bot. Gaz. 10: 224. 1885. 

 Devcuxia suksdorfii Scribn. Bull. Torrey Club 15: 9. pi. 76. 



"1888. 

 Calamaiirostis aleiitica angusta Vasey, Contr. U. S. Nat. 



Herb. 3: 80. 1892. 

 Calamagrostis cusickii Vasey, Contr. U. S. Nat. Herb. 3: 81. 



1892. 

 Calamagrostis suksdorfii Scribn. in Vasey, Contr. U. S. Nat. 



Herb. 3: 82. 1892. 

 Calamagrostis angusta Kearn. U. S. Dept. Agr. Div. Agrost. 



Bull. 11: 21. 1898. 

 Calamagrostis subflexuosa Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull. 11: 22. 1898. 

 Calamagrostis fasciculata Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull. 11: 23. f. 1. 1898. 

 Calamagrostis suksdorfii hixiirians Kearn. U. S. Dept. Agr. 



Div. Agrost. Bull. 11: 24. 1898. 



Culms slender, 60-100 cm. tall, from creeping 

 rhizomes ; sheaths smooth, but pubescent on the 

 collar ; blades flat or somewhat involute ; panicle nar- 

 row, spikelike, pale or purple, 7-15 cm. long; glumes 

 4-5 mm. long, narrow, acimiinate ; lemma pale and 

 thin, about as long as glumes, smooth, scarcely 

 nerved, the callus hairs about one-third as long; awn attached near base, geniculate, exserted 

 at side of glumes, the terminal portion about 1 mm. long. 



Open pine woods, prairies, and banks in the Arid Transition Zone; British Columbia to central Cali- 

 fornia, and east to Manitoba and Colorado. July-Aug. Type locality: Oregon. 



12. Calamagrostis californica Kearn. 



California Reed-grass. 



Fig. 360. 



Calamagrostis californica Kearn. U. S. Dept. Agr. Div. Agrost. 

 Bull. 11: 2,7. 1898. 



Culms about 1 meter tall ; blades flat, tirm, rather 



rigid, 4 mm. wide, those of the innovations involute ; 



panicle 20 cm. long, narrow, loose ; glumes 3-4 mm. 



long, scabrous, acuminate ; lemma shorter than the 



glumes, strongly nerved ; callus hairs abundant, half as 



long as the lemma ; awn delicate, straight, attached 



below the middle, extending to tip of lemma. 



A little-known species resembling C. canadensis but having 

 more rigid, firm blades, and callus hairs only half as long as 

 lemma. The only specimens known are those of the type collec- 

 tion, from "Sierra Nevada Mountains," Lemmon 444 in 1875. 



