416 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
CAUCALIS. 
1. Caucalis microcarpa Hook. & Arn. Bot. Beech. Voy. 348. 1839-40. 
Type Locaity: California. Collected by Douglas. 
Rance: 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, Suksdorf 16. 
ZONAL DISTRIBUTION: Transition. 
WASHINGTONIA. 
Fruit with bristly ribs. 
Flowers purple ......------ 22-20. eee ee ee ee ee ee ee ce ee ee eee eee 1. W. purpurea. 
‘Flowers white. 
Foliage strigose-pubescent ........------+-2-eeeeee ee ee ence 2. W. brevipes. 
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. 
Rays erect in fruit........2.0.2.2.2...2.2-.-2.--2----.-----.-.-.- 5. W. occidentalis. 
Rays spreading in fruit................2.-.-.-.-.------------- 6. W. ambigua. 
1. Washingtonia purpurea Coult. & Rose, Contr. Nat. Herb. 7: 67. 1900. 
TYPE LocALITY: “Sitka, Alaska.”’ 
Rance: Mountains of northern Oregon to Alaska. 
SPECIMENS EXAMINED: Chehalis County, Lamb 1382. 
2. Washingtonia brevipes Coult. & Rose, Contr. Nat. Herb. 7: 66. 1900. 
Tyre Locatity: ‘Mount Shasta and vicinity, Siskiyou County, Cal.’’ Collected by 
Palmer. 
RANGE: *‘rom 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, lett 63; Wenache Mountains, Whited 467; 
Roslyn, Whited 467; Mount Stuart, Eimer 1176; Falcon Valley, Suksdorf 2115; Blue 
Mountains, Horner 215; Clarks Springs, Spokane County, Kreager 44; Clallam County, 
Elmer 2774; Stuart Island, Lawrence 56. 
ZONAL DISTRIBUTION: Transition. 
3. Washingtonia divaricata Britton Ill. 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. Tl. Fl. 
2: 531. 1897, as synonym. 
Type Locatity: ‘‘Oregon.’’ Collected by Nuttall. 
Rance: From Oregon and northern California to South Dakota, and northward to 
Alaska. 
SPECIMENS EXAMINED: Puget Sound, Wilkes Expedition 365; Silverton, Bouck 85; Nis- 
qually Valley, Allen 34; Olympia, Henderson 376; Yakima County, Henderson 376; Rock 
Creek, Spokane County, Suksdorf 1195; Spokane, # W. Dewart; Tukanon River, Lake & 
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. 
Tyre Locatity: “Nason Creek, branch of Wenatchee River, Kittitas County, Washing- 
ton.”’ Collected by Sandberg & Leiberg. 
Rance: Mountains of Washington and Idaho. 
