238 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
ZONAL pistRiBuTION: Arid Transition. 
A form of this from the region of Mount Stuart, represented by Elmer’s 1096, Brandegee’s 
1050, and Sandberg & Leiberg’s 813, is distinguished by having small compact umbels and 
rather narrow lanceolate or lance-ovate leaves. It perhaps merits recognition as a 
subspecies. 
Another form of the species, which includes Watson’s 351, Whited’s 1149 and 1415, and 
Brandegee’s 1048, is characterized by unusually small and broad leaves, 2 to 4 cm. long, and 
small compact umbels of smaller flowers. Doctor Watson has labeled his specimen variety 
simplex, under which name the plant may be known. 
20a. Eriogonum heracleoides angustifolium (Nutt.) Torr. & Gr. Proc, Am. Acad, 
8: 159. 1870. 
Eriogonum angustifolium Nutt. Journ. Acad. Phila. II. 1: 164. 1847. 
Type Loca.ity: “Western slope of the Rocky Mountains.” Collected by Nuttall. 
Rance: Washington, Oregon, Idaho. 
SPECIMENS EXAMINED: Bickleton, Suksdorf 436. 
21. Eriogonum tolmieanum Hook. Fl. Bor. Am. 2: 134. 1838. 
Eriogonum umbellatum monocephalum Torr. & Gr. Proe. Am. Acad. 8: 160. 1870. 
’ 
Tyre Locauity: “Banks of the Walla Walla River, among Artemisia.” Collected by 
Tolmie. 
Rance: Washington to California? 
SPECIMENS EXAMINED: Walla Walla River, Tolmie; Yakima region, Tweedy, October, 
1882. 
22. Eriogonum umbellatum Torr. Ann. Lyc. N. Y. 2: 241. 1828. 
Eriogonum latum Small; Rydberg, Mem. N. Y. Bot. Gard. 1: 121. 1900. 
Type Locauity: ‘‘Near the Rocky Mountains.”’ Collected by James. 
Rance: Washington and Montana to California and Colorado. 
SPECIMENS EXAMINED: Stehekin, Whited 1383; Wenache Mountains, Waited 1167; 
Tumwater Canyon, Sandberg & Leiberg 521; Mount Adams, Fett 1049; Henderson, August 
9, 1892; Big Klickitat River, Cotton 1476. 
ZONAL DISTRIBUTION: Hudsonian. 
22a. Eriogonum umbellatum hypolejum subsp. nov. 
Leaves green on both sides, sparingly pubescent on the margins and petioles. 
SPECIMENS EXAMINED: Wenache Mountains, Whited 727, July 17, 1898 (type, depos- 
ited in the United States National Herbarium); Mount Stuart, H/mer 1192, August, 1898. 
22b. Eriogonum umbellatum majus Benth. in DC. Prod. 14: 11. 1856. 
Eriogonum subalpinum Greene, Pittonia 3: 18. 1896. 
Type LocaLity: ‘In montibus scopulosis region. sup. fl. Platte, Sweetwater, etc. (Gordon, 
Fremont, Burke, Geyer).” 
Rance: Washington to Montana and Colorado. 
SPECIMENS EXAMINED: Cascade Mountains, latitude 49°, Lyall; Mount Stuart, Elmer 
1198; Mount Chapaca, Elmer 586; Yakima region, Tweedy, August, 1882; Nason Creek, 
Sandberg & Leiberg 686; without locality, Vasey in 1889; Mount Carlton, Areager 236. 
23. Eriogonum stellatum Benth. Trans. Linn. Soc, 17: 409. 1837. 
Eriogonum croceum Small, Bull. Torr. Club 25: 43. 1898. 
Type Loca.ity: “Interior of northwest America.”” Collected by Douglas. 
SPECIMENS EXAMINED: Blue Mountains, Piper 2447. 
ZONAL DISTRIBUTION: Arid Transition, 
