134 PROCEEDINGS OF THE AMERICAN ACADEMY 



oblong, can inch or two long, obtuse or acute ; rhachis rarely developing 

 a short tendril at the extremity : flowers ochroleucous or sometimes 

 purplish (?), large (7 to 12 lines long) : calyx-teeth shorter than the 



7. L. vESTiTtrs, Nutt. Slender, often tall, usually more or less downj : 

 stipules narrow, often small ; leaflets ovate-oblong to linear, J to 1 inch long, 

 acute : flowers pale, 7 to 10 lines long : ovary appressed-pubescent. — L. strictus, 

 Nutt. Coast Eanges of California, from Sonoma County to San Diego ; very 

 variable. 



•w- ++ Leaflets 4 to 8 : peduncles 2-6-flowered. 



8. L. PALtrsTER, Linn. Slender, glabrous Or somewhat pubescent : stem 

 often winged : stipules mostly narrow, often small ; leaflets narrowly oblong to 

 linear, acute, an inch or two long : flowers smaller, 6 lines long. — L. Lanszwertii, 

 Kellogg, Proc. Calif. Acad. 2. 105, fig. 44. 



Var. MTRTiFOLius, Gray. Stipules usually broader and larger ; leaflets 

 ovate to oblong, an inch long or less. — L. venosus, var. S., Torr. & Gray, Fl. 

 1. 274. L. polyphijlhis, Watson, Bot. King's Rep. 78. — Very variable : found 

 throughout the northern part of the continent, ranging southward in the moun- 

 tains to New Mexico, Arizona, and S. California. What appears to be merely a 

 low form with the tendrils undeveloped is found in the Rocky Mountains and 

 westward. 



§ 2. Rhachis not tendril-bearing or rarely so : pod shortly stipitate. 



* Peduncles long, 2-6-flowered. 



9. L. LiTTORALis, Eudl. Densely silky-villous : stipules ovate-oblong, acute, 

 entire ; leaflets 2 to 6, with a small terminal one, cuneate-oblong, 4 to 6 lines 

 long : flowers purple, 6 to 8 lines long : pod oblong, villous. — On the coast, 

 from Washington Territory to San Francisco. 



10. L. Nkvadensis, Wat«on. See above. 



11. L. POLYMORPHUS, Nutt. Usually low, finely pubescent or glabrous, 

 glaucous: stipules narrowly acuminate; leaflets 6 to 12, thi(;k and strongly 

 nerved, narrowly oblong, acute, 1 or 2 inches long : flowers very large, purple : 

 pod 3 or 4 lines broad: funiculus remarkably narrow and hilum short. — New 

 Mexico and Colorado to Central Arizona. 



12. L. OKNATUS, Nutt. Leaves narrower and shorter:' pod somewhat 

 broader : funiculus broader : otherwise resembling the last. — Mountains of 

 ColoPiido and Utah. 



* * Peduncles very short, 1-flowered. 



13. L. ToRREYi, Gray. Very slender, low, sparingly villous : stipules nar- 

 row ; leaflets thin, 8 to 12, with occasionally a similar terminal one, ovate to 

 oblong, acute, i inch long: flowers rather small, purplish : pod pubescent. — 

 Washington Territory to N. California, near the coast. 



Species excluded. 

 L. LINEARIS, Nutt. and others, including L. dissitifotiiis, Nutt., is only a 

 western form of Vicia Americana, with narrow leaflets, = V. Americana, var. 

 linearis. 



