PIPER FLORA OF THE STATE OF WASHINGTON. 361 



'Columbia and Wiilla Walla," .V«//a//.- without locality, Brand<'(iee 708; without locality, 

 Vase)/ in 1889; Clealum, Cotton 855; Wcaache Mountains, Cotion 1817, 1314, 1316, 1462; 

 Cape Horn, Piper 520, 4970. 



Zonal distribution: Transition t)r Canadian. 



8. Trifoliuni covillei House, Bot. Gaz. 41: 337. 1906. 



Type loc-\litv: Bog lands in the Wenaclie Mountains, Kittitas County, Washington, 

 collected by Coville. 



Specimen examined: Wenache Mountains, CovUIe 1180. 



9. Trifolium pratense L. .Sp. PI. 2: 768. 1753. Red clover. 

 Type locality: European. Abundantly cultivated and established in fields and by 



waysides. 



10. Trifoliuni repens L. Sp. PI. 2: 767. 175:3. White clover. 

 Type locality: European. Established in most parts of the State. 



11. Trifoliuni hybridum L. Sp. PI. 2: 766. 1753. Alsike clover. 

 Type locality: European. 



Specimens examined: Pullman, Piper, July, 1893. Cultivated and established in fields 

 and by waysides nearly every wiiere. 



12. Trifolium albopurpureum Torr. ilCiv. Fl. 1: 313. 1838. 

 Type locality: California. 



Range: Washington to California west of the Cascades. 



Specimens examined: Whatcom, Svk.'^ch)/ 2578: Port Ludlow, Binns in 1890; Seattle, 

 Smith in 1889; Piper in 18^9. 



Zonal distribution: liumid Transition. 



This species has been considered identical with the Chilean 7'. maeraei Hook. & Arn., 

 but it seems amply distinct. 



13. Trifoliuni arvense L. Sp. PI. 2: 769. 1753. RABBn-ForjT clover. 

 Type locality: "Habitat in Europa, America septentrionali." 



Specimens examined: Seattle, Piper; Pullman, Piper, .Iidy 24, 1899. 



14. Trifoliuni ciliolatuni Benth. PI. Hartw. 304. 1848. 



Trijoliurn eiliatum Xutt. Journ. Acad. Phila. n. s. 1: 152. 1847, not Clarke 1813-16. 

 Type locality: "In pascuis vallis Sacramenti," California. 

 Range: Klickitat County, Washington, to California. 

 Specimens examined: Klickitat County, Sulsdorf 44. 



15. Trifoliuni gracilentum Torr. Sc Or. Fl. X. Am. 1: 316. 1838. 

 Type locality: California. Collected by Douglas. 



Range: Washington to California. 



Specimens examined: Whatcom, SMi-Sfior/" 1800; Port Ludlow, i?in/i.s, May 25, 1890. 



Zon'al distribution: Humid Transition. 



16. Trifoliuni hallii Howell, Fl. N. W. Am. 1: 135. 1898. 



Trifolium bijidiiin decipiens Greene, Fl. Fran. 1: 24. 1891, not J . decipiensHovnt^in. 1815. 

 Trifolium greenei House, Bot. Gaz. 41: 334. 1906. 

 Type locality: "In the Bay district," California. 

 Range: Washington to California west of the Cascades. 



Speclmens examined: Alki Point, Piper in 1889; Smith in 1889; Klickitat County 

 Suk\dorf 8; White Salmon, Sulcsdorf 349. 

 Zonal distribution: Humid Transition. 



