154 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



5. Sitanion latifolium Piper, Eiythea 7: 99. 1899. 



Type locality: "Blue Mts., Walla Walla County, Wash." Collected by Piper. 



Range: Known only from the type specimen. 



Specimens examined: Blue Mountains, Walla Walla County, Piper, July, lS9(i. 



6. Sitanion basalticola Piper, Bull. Torr. Club 30: 234. 1903. 



Type locality: "In Invsaltic .soil, Coulee City, Washington." Collected by Piper. 

 Range: Douglas County, Washington. 

 Specimens examined: Coulee City, Piper 3924. 

 Zonal distribution: Arid Transition. 



7. Sitanion ciliatuni Elmer, Bot. Gaz. 36: 5(S. 19()3. 



Type locality: "On diy rocky hills west of Wenatclu-e," Washington. Collected by 

 Wliited. 



Range: Washington. 



Specimens examined: Wenache Mountains, Wliited 1360; Waterville, S. E. Jordan; 

 Coulee City, Piper 3923; Lincoln County, Sandberg cfc Leihenj 221 ; Bickleton, Sulcsdorf 127. 



Zonal distribution: Arid Transition. 



8. Sitanion hystrix (Nutt.) J. G. Smith, U.S. Dept. Agr. ])iv. Agrost. Bull. 18: 15. 1899. 

 Aegilops hysbix Nutt. Gen. 1: 86. 1818. 



Sitanion albescens Elmer, Bot. Gaz. 36: 57. 1903. 



Type locality: "Arid plains of the Missouri." 



Range: Washington to Wyoming and Colorado. 



Specimens examined: Ellensburg, Piper 2.579; Whiied 670; Snipes Mountain, Cotton 

 380; Pasco, Piper 2962; Coulee City, Piper 3921, 3922; Spokane, Piper, -June 25, 1897; 

 Wenas, Griffiths d' Cotton 76; Walla Walla, Lechenby, July, 1898. 



Zonal distribution: Upper Sonoran and Arid Transition. 



9. Sitanion velutinum Piper, Bull. Torr. Club 30: 233. 1903. 



Type locality: "Steptoe, Whitman County, Washington." Collected by Vascy. 



Range: Eastern Washington. 



Specimens examined: Near Steptoe, Vasey. 



10. Sitanion planifolium J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18:19. l.'..,r. 

 Type locality: "High mountains, Skamania County, Wash." Collected by Suk.'x'o .. 

 Range: Mountains of Washington. 



Specimens examined: Olympic Mountains, Elmer 1903; Skamania C<Hmty, HuJcsdorj 

 224. 



Zonal distribution: Arctic? 



11. Sitanion rubescens Piper, Bull. Torr. Club 30: 234. 1903. 



■ Type locality: "Dry rocky places, 2,.300 m. altitude, Mount Rainier, Wasiiington." 

 Collected by Piper. 



Specimens examined: Mount Rainier, Piper 19.54. 



Zonal distribution: Arctic. 



MuNROA .SQUARROSA Torr. and Bouteloua oligostaciiya Torr. are included in'Suks- 

 dorf's list. There is no direct evidence that either of these occurs in the State. 



CYPERACEAE. Sedge Family. 



Flowere monoecious; akcne inclosed in a sac-like structure 



(perigynium) Carex (p. 161) . 



Flowers perfect; spikelets all alike. 



Spikelets flattened, the scales 2-ranked. 



Perianth-bristles none; inflorescence terminal Cyperus (p. 155) . 



Perianth-bristles 6 to 9; inflorescence axillary Dulichium (p. 156) . 



