PIPER FLORA OF THE STATE OF WASHINGTON. 365 



Pods curved, pubescent, 1 or 2-seeded; flowers yellow; foliage 



pubescent 4. 77. decumbens. 



Annuals; flowers solitary or sometimes two on the peduncles of the first species. 

 Peduncles usually exceeding the leaves. 



Flowers 3 to 4 mm. long; leaflets oblong to ovate, usually gla- 

 brous 5. H. ]mrvifora. 



Flowers 5 to 6 mm. long; leaflets ovate to lanceolate, usually 



villous 6. H. americana. 



Peduncles very short, the flowers nearly sessile; calyx lobes denticu- 

 late 7. H. denticulata. 



1. Hosackia bicolor Dougl. Bot. Reg. 16: pi. 1257. 1829. 



Lotus pinnatus Hook. Bot. Mag. 56: pi. 2913. 1829 (December 1). 



Type locality: "In overflowed meadows between Fort Vancouver and the Grand 

 Rapids of the Columbia." Collected by Douglas. 



Range: Washington and Idaho to California. 



Specimens examined: Woodlawn, Henderson, June, 1892; Olympia, Kincaid, July, 

 1896; Mount Stuart, Elmer 1161; Columbia Valley, Lyall in I860; Palouse River, LyaZZ in 

 1860; Pullman, Hull 782; without locality. Cooper; Seattle, Piper in 1888. 



Zonal distribution: Transition. 



2. Hosackia gracilis Benth. Trans. Linn. Soc. 17: 365. 1837. 

 Lotus formosis.simus Greene, Pittonia 2: 147. 1890. 



Type locality: California. Collected by Douglas. 



Range: Washington to Monterey Bay, California. 



Specimens examined: Montesano, //cZZer 3934 ; Henderson 2350. 



3. Hosackia crassifolia Benth. Trans. Linn. Soc. 17: 365. 1837. 

 Hosackia stolonifera Lindl. Bot. Reg. 23: pi. 1977. 1837. 

 Hosackia platycarpa Nutt.; Torr. & Gr. Fl. 1 : 323. 1838. 



Lotus crassifolius Greene, Pittonia 2: 147. 1890. 



Type locality: California. Collected by Douglas. 



Range: Washington to southern California. 



Specimens examined: Montesano, Heller 3925; Mason County, Piper 1044; Chehalis 

 County, Lamb 1170; Tacoma, Fleti 55; Steilacoom, Howell in 1878; Dalles, Lyall in 1860; 

 Klickitat County, Suksdorf. 



Zonal distribution: Transition. 



4. Hosackia decumbens Benth. Bot. Reg. 16: under pi. 1257. 1829. 

 Lotus douglasii Greene, Pittonia 2: 149. 1890. 



Type locality: "Northwest coast of America." Collected by Douglas. 



Range: Washington to Idaho and California. 



Specimens examined: Mason County, Fiy)er 57 ; between Olympia and Gate City, T/gZ/gr- 

 4047; west Klickitat County, SwisfZor/" 112; Loon Lake, Winston, 3 u\y 2^, 1897; Spokane, 

 Piper, July, 1896; Henderson, July, 1892; Elmer 376; Spokane, Kreager 2; Dalles, Lyall 

 in I860. 



Zonal distribution: Transition. 



5. Hosackia parvifiora Benth. Bot. Reg. 16: under pi. 1257. 1829. 

 Hosackia microphylla Nutt.; Torr. & Gr. Fl. 1: 326. 1838. 



Lotus micranthus Benth. Trans. Linn. Soc. 17: 367. 1837. 



Type locality: "Northwest coast of America." Collected by Douglas. 



Range: British Columbia to California west of the Cascades. 



Specimens examined: Montesano, Heller 3911; Chehalis County, Lamb 1I5I; Seattle, 

 Piper, July, 1895; Olympia, Henderson, May, 1892; Port Ludlow, Binns, May 5, 1889; 

 west Klickitat County, 57/^Wor/ 533; without locality, Coojoct; Lyall; Vancouver, Piper 

 4930. 



Zonal distribution: Humid Transition. 



