316 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Leaflets elliptic to obovate. .....-...- 6. L. bijugatus. 
Leaflets linear to lanceolate... ..-.-. - Ga. L. bijugatus sandbergit. 
Plants climbing by simple or 3-forked tendrils. 
Stems winged. .........------------------------ 7. L. paluster. 
Stems wingless. 
Flowers yellowish becoming tawny............ 8. L. sulphureus. 
Flowers blue-purple. 
Leaflets véry thin, 5 to 8 pairs..-.2. 2. -.- 9. L. polyphyllus. 
Leaflets firm, 3 to 6 pairs. 
Peduncles not exceeding the leaves; 
leaflets not cuspidate. 
Leaflets ovate-oblong, glabrous... 10. Z. maritimus. 
Leaflets linear-lanceolate or ellip- 
tic, pubescent... 2.2.2.2. 22. 11. L. coriaceus. 
Peduncles exceeding the leaves; leaf- 
lets cuspidate. 
Leaflets oblong or elliptic... .... - 12. L. pauciflorus. 
Leaflets linear or lanceolate... ... 12a. L. pauciflorus tenuior. 
1. Lathyrus littoralis (Nutt.) Endl.; Walp. Repert. 1: 722. 1842. 
Astrophia littoralis Nutt.; Torr. & Gr. Fl. 1: 278. 1838. 
Orobus littoralis A. Gray, Pac. R. Rep. 4: 54. 1859. 
Type Loca.ity: “Sand hills near the estuary of the Oregon.” Collected by Nuttall. 
Rance: On the seacoast of Washington and Oregon. 
SPECIMENS EXAMINED: Laidlaw, Lamb 1119; Shoalwater Bay, Cooper; Whidby Island, 
Gardner 82; Ocosta, Henderson, June, 1892; without locality, Wilkes Expedition. 
ZONAL DISTRIBUTION: Humid Transition. 
2. Lathyrus torreyi A. Gray, Proc. Am. Acad. 7: 337. 1868. 
Lathyrus torreyi tenellus Wiegand, Bull. Torr. Club 26: 135. 1899. 
Tyre LocaLity: Mendocino or south part of Humboldt County, California. - 
Rance: Washington to California west of the Cascades. 
SPECIMENS EXAMINED: Tacoma, Flett, June, 1897, 180; Steilacoom, Cooper; Puyallup, 
Piper 3826; La Camas, Hencerson, May 30, 1889; Manor, Piper 3075. 
ZONAL DISTRIBUTION: Humid Transition. 
3. Lathyrus obovatus (Torr.) White, Bull. Torr. Club 21: 455. 1894. 
Lathyrus venosus obovatus Torr. Pac. R. Rep. 4: 77. 1857. 
Lathyrus nevadensis S. Wats. Proc. Am. Acad. 11: 133. 1876. 
Type Locauity: “Mammoth Grove and Duffield’s Ranch, California.” 
RanaeE: Washington to California. 
SPECIMENS EXAMINED: Waitsburg, Horner 93. 
3a. Lathyrus obovatus stipulaceus White, Bull. Torr. Club 21: 455. 1894. 
TyPE LocaLity: Colville to Spokane, Washington. Collected by the Wilkes Expedition. 
Rance: British Columbia and Washington. 
SPECIMENS EXAMINED: Spokane Valley, Lyall in 1861. 
4. Lathyrus nuttallii S. Wats. Proc. Am. Acad. 21: 450. 1886. 
Type Locatiry: ‘Upper California.’’ Collected by Nuttall. 
Rance: British Columbia to California in the coast region. 
SPECIMENS EXAMINED: Olympic Mountains, Henderson 2349; Cascade Mountains, latitude 
49°, Lyall in 1859; Cascade Mountains, Henderson 2346; Admiralty Head, Piper; Seattle, 
Hindshaw; upper Nisqually Valley, Allen 297; Klickitat County, Henderson, June 1, 
1884; Klickitat River, Fleit 1261; Falcon Valley, Suksdorf54; Lake Wenache, Sandberg 
