PIPER FLORA OF THE STATE OF WASHINGTON. 405 



21. Epilobium drummondii Haussk. Monog. Epil. 271. 1884. 

 Type locality: "Hab. in Rocky Mts." Collected by Drummond. 

 Range: British Columbia to Nevada and Colorado. 



Specimens examined: Falcon Valley, iSMts^Zor/" 2149. 



22. Epilobium delicatum tenue Trelease, Rep. Mo. Bot. Gard. 2: 99. 1891. 

 Type locality: Union County, Oregon. Collected by Cusick. 



Range: Washington to Colorado. 



Specimens examined: Olympic Mountains, Piper, August, 1895; Skamania County, 

 5wJts(for/2309. 



Epilobium davuricum Fisch. in Hornem. Hort. Bot. Havn. Suppl. 44. 1819. Hauss- 

 knecht in his Monograph reports this from Tacoma, collected by Krause, but we have seen 

 no specimens thus referable. It was originally described from Siberia, and ranges at least 

 as far east as Alaska. 



Epilobium origanifoliu.m Lam. This name appears on Suksdorf's list, but the species 

 is not known to occur in North America. 



TABAXIA. 



White-pubescent; leaves deeply pinnatifid 1. T. tanacetifolia. 



Glabrous or nearly so. 



Leaves entire or denticulate 2. T. heteranthxi. 



Leaves pinnatifid : 2a. T. heterantha taraxacifolia. 



1. Taraxia tanacetifolia (Torr. & Gr.). 



Oenothera tanacetifolia Torr. & Gr. Pacif. R. Rep. 2: 121. pi. 4- 1854. 

 Taraxia longiflora Nutt.; Small, Bull. Torr. Club 23: 185. 1896. ' 

 Oenothera nuttallii Torr. & Gr. FI. 1 : 506. 1840, not Sweet, 1830. 

 Type locality: "On the higher parts of the Sierra Nevada; latitude 41°, California. 

 Range: Washington to Nevada and California. 



Specimens examined: Ritzville, Sandberg cfc Leiberg 162; Crab Creek country, Suksdorf 

 308; Spokane County, Sutsdor/" 309 ; Marshall Junction, Piper 2259. 

 Zonal dis tdibution : Arid Transition. 



2. Taraxia heterantha (Nutt.) Small, Bull. Torr. Club 23: 185. 1896. 

 Oenothera heteratha Nutt. Journ. Acad. Phila. 7: 22. 1834. 



Type locality: "Towards the sources of the Columbia, in dry prairies." Collected by 

 Wyeth. 



Range: Washington and Idaho to Nevada and Utah.. 



Specimens examined: Klickitat River, Flett 1012; Rock Creek, Sandberg cfe Leiberg 130; 

 Spangle, Piper 2835; without locality, Vasey in 1889; Wenache Mountains, Cotton 1195. 



Zonal distribution: Arid Transition. 

 2a. Taraxia heterantha taraxacifolia (S.Wats.) Small, Bull. Torr. Club. 23: 185. 

 1896. 



Oenothera heterantha taraxacifolia S. Wats. Proc. Am. Acad. 8: 589. 1873. 



Taraxia taraxacifolia Heller, Muhlenbergia 1:1. 1900. 



Type locality: Near Austin, Nevada. 



Range: Washington to California. 



Specimens examined: Rock Creek, Spokane County, Sandberg & Leiberg, 120 in part=- 

 Grand Coulee, Griffiths <& Cotton 451; Walla Walla, Griffiths cfc Cotton 451. 



Zonal distribution: Arid Transition. 



SPHAEROSTIGMA. 



Flowers axillary, yellow or yellowish. 



Capsule linear, more or less curved 1. S. contortum. 



Capsule broadest at base, attenuate upward. 



Seeds pale, linear; flowers very small 2. S. andinum. 



Seeds dark, clavate; flowers larger 3.5. hilgardi. 



