116 



LEGUMINOSJi. Lupinus. 



roreiiniula, tlwurf iiiul ccsi»ito3o. — In tlio Siurni Nevada. 



Stems conipletoly hcibaccouH, witli nitliur hm^ iuternodoa. 



LooMoly villoim willi lon^^ Imiin. 2fi. L. AUinUK. 



ApproHsed-silky, tlio li.iiiH NliorUw. 2(5. L. MINIMUB. 

 StoiuB leafy, I'rom a Npruailiiij,' wou.ly ciiudux : aiipiessed-silky. 



Loutlots 7 to 1(1. oliliiHo : iHulimcloM hIihiI : Ktaiidard orhinilar. '27. I-. MiticwKUi. 



Loallola 5 to (i, aculibh : i)uduiicle3 cloiigatod : standard olUi)tical. U. L. Lyallii. 



♦ ♦ • Perennials, more or less shrubby at base, tall and leafy, silky-pubescent : petioles mostly 



short : flowers large : ovules 6 to 12. 



Pubescence not dense : leaflets narrowly lanceolate : flowers yellow : 



ovules 10 to 12. . 1- L. akbokeus. 



Pubescence dense : leaflets broader, obtuse : flowers blue to white : 



ovules 6 to 8. 2. L. Chami.ssoni.s. 



Pubescence short, mostly tomentoso : leaflets oblanceolate : bracts long : 



flowers blue : ovules 8 or 9. 3. L. Dougla.sii. 



• ♦ ♦ ♦ Perennials, herbaceous, mostly tall : flowers large : ovules 6 or more, excepting L. Sit- 



yredvii and L. OraijL 



Leaflets smooth above, oblanceolate : flowers not yellow. 



Petioles elongated : stem somewhat succulent : bracts short and decid- 

 uous. Sparingly villous : leaflets 10 to 16, large : stipules 



broad : ovules 9. 4. L. rOLYPHYLLU.s. 



Petioles scarcely exceeding the (5 to 10) leaflets: bracts mostly long. 



Nearly glabrous, erect : stinulos narrow : ovules 8 to 10. 5. L. uivULARia. 



Calyx subvillous : stipules laoadcr ; bracts nu)re huiry, subporsist- 



ent : lower i>etioles elongated : pedicels short. (J. L. BURKEI. 



More pubescent or villous, subdecumbent, leafy ; leaflets 5 to 8, 



smaller : keel ciliate : ovules 10 to 12. 7. L. LlTTORAUS. 



Puberulent and subvillous : bracts short : ovules 5. 10. L. Sitgheavesii. 



Leaflets pubescent both sides, as long as the petioles : ovules 6 to 8. 



Flowers yellow : keel ciliate : bracts long. 8. L. Sabinii, 



Flowers not yellow : bracts short : leaflets 5 to 9. 



Erect, tall : pubescence often scanty : keel narrow, strongly falcate, 



nakcil ; standard naked. 9. L. ALBICAULIS. 



Subdecumbent, appressed-silky : standard silky ; keel ciliate. 11. L. ornatus. 



Hoary-tomenlose, a si)au high : standard naked ; keel ciliate. 14. L. Guayi. 



» ♦ • ♦ ♦ Perennials, herbaceous, mostly rather low : flowers smaller : ovules 6 or less. 



Leaflets glabrous aljovo, 



Mostly shorter than the petioles : standard naked. 



Tall, scantily puberulent : keel usually naked : pod small, 2 - 



4-seeded. 19. L. parviflorus. 



A sT)an high or less, sparingly villous : keel strongly ciliate : pod 



broad, G-ovuled. 17. L. ONUSlD.s. 



Eiiualling the i)etiolca : appressed-silky : iwlals naked or nearly so : 



pod short, 3-5-ovuled. 22. L. argenteus. 



Leaflets pubescent on both sides. 



Leaves distant ; lower petioles elongated. 



Pubescence villous, spreading: bracts deciduous, often long: stand- 

 ard hairy : keel ciliate. 12. L. SERICEUS. 

 Densely silky-tomentoso, stout: pedicels very short: bracts subper- 



sistent : standard very hairy : keel subciliate. 13. L. LEUCOl'llYLLUS. 



Densely appressed silky-villous, often low : bracts deciduous : stand- 

 ard naked. l."'. I- leviuus. 

 Silky-villous : raceme dense : bracts persistent : standard oblong, 



linked. ItJ- I-"- GONFERTUa. 



Stems leafy : petioles short. 



Standard and keel naked : calyx not spurred. 



Puberulent, much branched, slender. 18. L. Andersonh. 



Densely silky-tomentose : flowers very small. 24. L. MEIONANTHUS. 



Standard and keel more or less hairy : calyx spurred. 



Finely appressed-silky : calyx strongly spurred : standard longest. 20. L. calcaratus. 

 Appressed-puberulent : leaflets narrower : petals eiiual. 21. L. laxiklorus. 



Close silvery-silky : calyx slightly spurred. 23. L. holosericeus. 



