416 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



CATJCALIS. 



1. Caucalis microcarpa Hook. & Am. Bot. Beech. Voy. 348. 1839-40. 



Type locality: California. Collected by Douglas. 



Range: From Washington and Idaho to southern California and Arizona, and extend- 

 ing into Mexico. 



Specimens examined: Clallam County, Elmer 2766; Almota, Piper, May 2, 1897; 

 Wawawai Elmer 93; Piper 1890, May 19, 1894; Lake 706: Klickitat County, SuJcsdorf 16. 



Zonal distribution: Transition. 



WASHINGTONIA. 



Fruit with bristly ribs. 



Flowers purple 1. W. purpurea. 



Flowers white. 



Foliage strigose-pubescent 2. W. hrevipes. 



Foliage glabrous or nearly so. 



Fruit with a conspicuous sharp beak 3. W. divaricata. 



Fruit constricted below the apex and with truncate tip. . . 4. W. leibergi. 

 Fruit glabrous. 



Havs erect in fruit 5. W. occidentalis. 



Rays spreading in fruit 6. W. ambigua. 



1. Washingtonia purpurea Coult. & Rose, Contr. Nat. Herb. 7: 67. 1900. 

 Type locality: "Sitka, Alaska." 



Range: Mountains of northern Oregon to Alaska. 

 Specimens examined: Chehalis County, Lamb 1382. 



2. Washingtonia brevipes Coult. & Rase, Contr. Nat. Herb. 7: 66. 1900. 



Type locality: "Mount Sliasta and vicinity, Siskiyou County, Cal." Collected by 

 Palmer. 



Range: From northern Washington and adjacent Idaho to southern California. 



Specimens examined: Seattle, Piper 110; Smith 110; Chehalis County, Heller 3975; 

 Whidby Island, 0. Piper, May, 1898; Tacoma, Flett 63; Wenache Mountains, Whited 467; 

 Roslyn, Whited 467; Mount Stuart, Elmer 1176; Falcon Valley, SuTcsdorf 2115; Blue 

 Mountains, Horner 215; Clarks Springs, Spokane County, Kreager 44; Clallam County, 

 Elmer 211 A; Stuart Island, Laiorence 56. 



Zonal distribution: Transition. 



3. Washingtonia divaricata Britton 111. Fl. 2: 531. 1897. 

 Washingtonia intermedia Rydberg, Mem. N. Y. Bot. Gard. 1: 289. 1900. 



Osmorhiza divaricata Nutt.: Torr. & Gr. Fl. 1: 639. 1840, nom. nud.; Britt. & Br. 111. Fl. 

 2: 531. 1897, as synonym. 



Type locality: "Oregon." Collected by Nuttall. 



Range: From Oregon and northern California to vSouth Dakota, and northward to 

 Alaska. 



Specimens examined: Puget Sound, Wilkes Expedition 365; Silverton, 5o?/ci" 85; Ni.s- 

 qually Valley, Allen 34; Olympia, Henderson 376; Yakima County, Henderson 376; Rock 

 Creek, Spokane County, Suksdorf 1195; Spokane, F W. Deivart; Tukanon River, Lalce cfc 

 Hull 764; without locality, Vasey 306; Cape Horn, Piper 4979; Klickitat River, Cotton 

 1480. 



Zonal distribution: Transition. 



4. Washingtonia leibergi Coult. & Rose, Contr. Nat. Herb. 7: 66. 1900. 



Type locality: "Nason Creek, branch of Wenatchee River, Kittitas County, Washing- 

 ton." Collected by Sandberg & Leiberg. 



Range: Mountains of Washington and Idaho. 



