376 



CONTEIBUTIONS FEOM THE NATIONAL HEKBAETUM. 



Leaflets elliptic to obovate 6. /.. hljiigatus. 



Leaflets linear to lanceolate 6a. L. hijugatus sandbergii. 



Plants climbing Ijy simple or 3-forked tendrils. 



Stems winged ... 1. L. pahtster. 



Stems wingless. 



Flowers yellowish becoming tawny. S. L. !<idphure\if<. 



Flowers blue-purple. 



Leaflets very thin, 5 to <S pairs 9. L. poh/pln/ihis. 



Leaflets firm, 3 to 6 pairs. 



Peduncles not exceeding the leaves: 

 leaflets not cuspidate. 



Leaflets ovate-oblong, glabrous.. . 10. L. mnritiimis. 

 Leaflets linear-lanceolate or ellip- 

 tic, pubescent 11. L. roriaceus. 



Peduncles exceeding the leaves; leaf- 

 lets cuspidate. 



Leaflets oblong or elliptic 12. L. pnucifonis. ■ 



Leaflets linear or lanceolate 12a. L. pauciforus tenuioi'. 



1. Lathyrus littoralis (Nutt.) Endl.; Walp. Repert. 1: 722. 1842. 

 Astrophla Jlttomlis Nutt.; Torr. & Gr. Fl. 1: 278. 1S38. 



Orobus littoralis A. Gray, Pac. R. Rep. 4: 54. 1859. 



Type locality: "Sand hills near the estuary of the Oregon." Collected by Nuttall. 

 Range: On the seacoast of Washington and Oregon. 



Specimens examined: Laidlaw, Lamh 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 ienellus Wiegand, Bull. Torr. Club 26: 135. 1899. 



Type locality': Mendocino or south part of Humboldt County, California. 

 Range: 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: 4.55. 1894. 

 Lathyrus i^enosus ohovatus Torr. Pac. R. Rep. 4: 77. 1857. 



Lathyrus nevadensis S. Wats. Proc. Am. Acad. 11: 133. 1876. 

 Type locality: "Mammoth Grove and Duflfield's Ranch, California." 

 Range: Washington to California. 

 Specimens examined: Waitsburg, Horner 93. 



3a. Lathyrus obovatus stipulaceus White, Bidl. Torr. Club 21: 4.55. 1894. 



Type locality: Colville to Spokane, Washington. Collected by the Wilkes Expedition. 

 Range: British Columl)ia and Washington. 

 Specimens exaaiined: Spokane Valley, Lyall in 1861. 



4. Lathyrus nuttaUii S. Wats. Proc. .Vm. Acad. 21: 4.50. 1SS6. 

 Type locality: "Upper California." Collected by Nuttafl. 

 Range: British Columbia to California in the coast region. 



Specimens examined: Olympic Mountains, i^entZerson 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, Flett 1261; Falcon Valley, Sulcsdorf 354; Lake Wenache, Sandberg 



