PIPER—FLORA OF THE STATE OF WASHINGTON. 361 
‘Columbia and Walla Walla,” Nuttall; without locality, Brandegee 708; without locality, 
Vasey in 1889; Clealum, Cotton 855; Wenache Mountains, Cotton 1317, 1314, 1316, 1462; 
Cape Horn, Piper 520, 4970. 
ZONAL DISTRIBUTION: Transition or Canadian. 
8. Trifolium covillei House, Bot. Gaz. 41: 337. 1906. 
Type Locatity: Bog lands in the Wenache Mountains, Kittitas County, Washington, 
collected by Coville. 
SPECIMEN EXAMINED: Wenache Mountains, Coville 1180. 
9. Trifolium pratense L. Sp. PI. 2: 768. 1758. RED CLOVER. 
Type LocaLity: European. Abundantly cultivated and established in fields and by 
waysides. 
10. Trifolium repens L. Sp. P1. 2: 767. 1753. WHITE CLOVER. 
Type LocaLity: European. Established in most parts of the State. 
11. Trifolium 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 everywhere. 
12. Trifolium albopurpureum Torr. & Gr. FI. 1: 313, 1838. 
Type Locauiry: California. 
Rance: Washington to California west of the Cascades. 
SPECIMENS EXAMINED: Whatcom, Suksdorf 2578; Port Ludlow, Binns in 1890; Seattle, 
Smith in 1889; Piper in 1889. 
ZONAL DISTRIBUTION: Humid Transition, 
This species has been considered identical with the Chilean 7’. mdcraei Wook. & Arn., 
but it seems amply distinct. 
13. Trifolium arvense L. Sp. PI. 2: 769. 1753. RABBIT-FOOT CLOVER. 
Type Locauity: “Habitat in Europa, America septentrionali.” 
SPECIMENS EXAMINED: Seattle, Piper; Pullman, Piper, July 24, 1899. 
14. Trifolium ciliolatum Benth. Pl. Hartw. 304. 1548. 
Trifolium ciliatum Nutt. Journ. Acad. Phila. n. s. 1: 152. 1847, not Clarke 1813-16. 
Type Locauity: “In pascuis vallis Sacramenti,’”’ California. 
Rance: Klickitat County, Washington, to California. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf 44. 
15. Trifolium gracilentum Torr. & Gr. Fl. N. Am. 1: 316. 1838. 
Type Locatity: California. Collected by Douglas. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Whatcom, Suksdorf 1800; Port Ludlow, Binns, May 25, 1890. 
ZONAL DISTRIBUTION: Humid Transition. 
16. Trifolium hallii Howell, Fl. N. W. Am. 1: 135, 1898. 
Trifolium bifidum decipiens Greene, Fl. Fran. 1: 24. 1891, not J. decipiens Hornem. 1815. 
Trifolium greenei House, Bot. Gaz, 41: 334. 1906. 
Type Locauity; “In the Bay district,’’ California. 
Rance: Washington to California west of the Cascades. 
SPECIMENS EXAMINED: Alki Point, Piper in 1889; Smith in 1889; Klickitat County 
Suksdorf 8, White Salmon, Suksdorf 349. 
ZONAL DISTRIBUTION: Humid Transition. 
