394 LEGUMINOSAE 



Coastal marshes, 10 to 100 feet: Humboldt Co. to Del Norte Co. North to 

 Alaska, east to New Enjjland; Europe. June- July. 



Tax. note. — Lathyrus palustris differs from L. jepsonii and L. watsonii in its more slender 

 habit, in having fewer leaflets and in its racemes which are only 3 to G-flowered. 



Locs. — Samoa, Humboldt Co., Tracy 2593 ; Lake Earle, Del Norte Co., Davy. 



Refs. — Lathyrus palustris L. Sp. PI. 733 (1753), type from Europe. L. occidentalis 

 Nutt.; T. & G. Fl. 1:276 (1838), as synonym, "mouth of the Oregon" [Columbia River], Nuttall. 



14. L. watsonii White. Buff Pea. Stems erect, stoutish, strongly winged, or 

 at least evidently winged, l^/o to 2i/2 feet high, or climbing 4 to 6 feet; herbage light 

 green, glaucous, finely pubescent or subglabrous; leaflets 1 to 3 inches long, 3 to 

 7 (or 17) lines wide, tapering from the middle to each end, acute, mucronate, 

 strongly several-nerved from the base or near the base, the nerves branching little 

 and almost parallel; stipules semi-sagittate, narrow, the upper lobe lanceolate, the 

 lower lobe little dilated, commonly entire; racemes 4 to 18-fiowered, on peduncles 

 2y2 to 7 inches long; calyx sparingly to densely pubescent; lower calyx-teeth lance- 

 olate, subequal, equaling or longer than tube ; corolla white, the banner pink-veined 

 and soon pink-flushed, all the petals turning buff, or sordid in age, 8 to 10 lines 

 long; pods 2 inches long, 4 lines wide; seed with a small aril. 



Sandy slopes in foothills or cafions, sandy ridgelets in valleys, or along streams, 

 50 to 5000 feet: South Coast Ranges from San Luis Obispo Co. to Alameda Co.; 

 inner North Coast Range from Solano Co. to Siskiyou Co.; Sacramento Valley; 

 Sierra Nevada foothills from Tulare Co. to Shasta Co. Mar.- July. 



Locs. — Coast Ranges: Paso Robles, Barber; upper Cholame Creek, se. Monterey Co., Jepson 

 15,904 ; Castroville, Davy 7546 ; Los Buellis hills, Mt. Hamilton Range, R. J. Smith (herbage gla- 

 brous and thus difficult to distinguish from L. jepsonii Greene) ; Oakland Hills, Chesnut; Miller 

 Canon, Vaca Mts., Jepson 13,643; Rutherford, Napa Valley, Tracy 2079; Ukiah, Blasdale 1011; 

 Round Valley, ne. Mendocino Co., Westerman ; Martin ranch, South Fork Trinity River, Jepson 

 2010; Stuarts, Trinity Co., H. S. Tates 480; Shasta Sprs., Jepson 13,617; Shackelford Creek, w. 

 Siskiyou Co., Butler 1644. Sacramento Valley: Vacaville, Jepson 6269, 13,616; Sacramento 

 River (w. of Chico), Heller 11,345. Sierra Nevada: Springville, Tulare Co., T. Brandegee ; 

 Northfork, Madera Co., Noddin; Columbia, Tuolumne Co., Jepson 6344; New Yoi'k Falls, Amador 

 Co., Hansen 346; Bear Valley, Nevada Co., Jepson 13,623; Mineral, Tehama Co., J. Grinnell; 

 Morleys sta., Shasta Co., BaTcer ^ Nutting. 



Refs.— Lathyrus watsonii White, Bull. Torr. Club 21:447 (1894); Jepson, Fl. W. Mid. 

 Cal. 298 (1901), ed. 2, 239 (1911). L. venosus var. calif ornicus Wats. Proc. Am. Acad. 11:133 

 (1876), "Sonoma Co. to Monterey and in the foothills of the Sierra Nevada". L. calif ornicus 

 Wats. Proc. Am. Acad. 20:363 (1885); Jepson, Man. 585 (1925); not L. californicus Dougl. 

 (1828). 



15. L. jepsonii Greene. Tule Pea. Stems 3 to 8 feet high, climbing, strongly 

 winged along the angles; herbage glabrous; leaflets 8 to 12, linear-lanceolate, mu- 

 cronulate, 1 to 1% inches long; stipules semi-sagittate, both the apical and basal 

 lobes lanceolate or oblong; peduncles mostly shorter than the leaves; lower calyx- 

 teeth narrow-lanceolate, the lowest one equaling the tube; corolla rose-purple, 8 to 

 10 lines long; pods 1% to 2^4 inches long, 3 to 4 lines wide. 



Banlcs of tidewater sloughs : delta region of the Great Valley; Suisun and San 

 Pablo bays. July-Sept. 



Locs. — Stockton, Greene; Brannan Isl., lower Sacramento River, Jepson 10,219; Rough and 

 Ready Isl., San Joaquin Co., Berg ; Teal sta., Suisun marshes, Jepson 10,231, 13,624; Napa River 

 (at drawbridge), Bioletti. 



Refs. — Lathyrus jepsonii Greene, Pitt. 2:158 (1890), type loc. Suisun marshes, Jepson 

 13,624; Jepson, Fl. W. Mid. Cal. 299 (1901), ed. 2, 239 (1911), Man. 585, fig. 580 (1925). L. pa- 

 lustris var. e T. & G. Fl. 1 :276 (1838), type from California, Douglas. 



Lathyrus latifolius L. Sp. PI. 733 (1753), type European. Everlasting Pea. Climbing 

 perennial, stems winged; herbage glabrous; leaflets 1 pair, narrowly oblong to lanceolate, 1% 

 to Z% inches long; tendrils stout and branched; peduncles exceeding the leaves, several to many- 

 flowered ; coroUa rose, varying to white ; banner very large ; pods 3 to 5 inches long. — Cultivated 

 from Europe, sometimes a transient escape: Scotia, lower Eel River Valley, Jepson 16,464. 



