116 



LEGUMINOS^E. 



* * Perennials, dwarf and cespitose. — In the Sierra Nevada. 



Lupinus. 



Stems completely herbaceous, with rather long mternodes. Annus 



Loosely villous with long hairs. ■ ' ^^[^^^^-^^ 

 Appressed-silkv, the hairs shorter. 



Stems leafy, from a spreading woody caudex : appressed-silkv. p.-.^wfi-i 



Leaflets 7 to 10, obtuse : peduncles short : standard orblc.aal^ 2^ L. Bke^veU- 



Leaflets 5 to 6, acutish : peduncles elongated : standard elhptical. 28. L. L\allii. 



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

 short : flowers large : ovirles 6 to 12. 



Pubescence not dense : leaflets narrowly lanceolate : flowers yellow 



1. L. ARBOREUS. 



2. L. Chamissonis. 



ovules 10 to 12. 1 1 i -uiv^ 



Pubescence dense: leaflets broader, obtuse: flowers blue to ^^hlte 



PubescencVJhort,''mostly tomentose : leaflets oblanceolate : bracts long: r,ouGLASll 



flowers blue : ovules 8 or 9. .... 



* * * * Perennials, herbaceous, mostly tall : flowers large : o^^lles 6 or more, excepting L. Sit- 

 yreavii and L. Graiji. 



Leaflets smooth above, oblanceolate : flowers not yellow. 



Petioles elono-ated : stem somewhat succident : bracts short and decid- 

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

 broad : ovules 9. „ •, . xi i 



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

 Nearly o-labrous, erect : stipules narrow : ovules 8 to 10. J. 



Calyx subvillous : stipules broader : bracts more hairy, subpersist- 



ent : lower petioles elongated : pedicels short. o- 



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



smaller : keel ciliate : ovules 10 to 12. 7, 



Puberulent and subvillous : bracts short : ovules 5- 1^- 



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

 Flowers yellow : keel ciliate : bracts long. 



Flowers not vellow : bracts short : leaflets 5 to 9. , ^ i .„ 



Erect, tail": pubescence often scanty : keel narrow, strongly falcate, ^ 



' naked ; standard naked. , , .„ ,,.,., ,1 



Subdecumbent, appressed-silky : standard silky ; kee ci hate. 11 



Hoary-tomentose, a span high : standard naked ; keel cdiate. 14 



L. POLYPHYLLrS. 



L. IIIVULARIS. 



L. BURKEI. 



L. LITTORAT.IS. 

 L. SiTGREAVESII. 



L. Sabinii. 



L. ALBICAULIS. 

 L. ORXATUS. 



L. Grayi. 



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



Leaflets glabrous above, , j i i 



Mostly shorter than the petioles : standard naked. 



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



A span'^Mgli'or less, sparingly villous : keel strongly ciliate : pod 

 broad, 6-ovuled. i . „ . 



Eciualling the petioles : appressed-silky : petals naked or nearl> so . 

 pod short, 3-5-ovuled. 

 Leaflets pubescent on both sides. 



Leaves distant ; lower petioles elongated r, 1 „ . =fn,i,l 



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

 ard hairy : keel ciliate. 1. ^ 1 

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



sistent : standard very hairy : keel subciliate._ 

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

 ard naked. . .Tin 

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

 naked. 

 Stems leafy : petioles short. 



Standard and keel naked : calyx not spurred. 

 Puberulent, much branched, slender. 

 Densely silky-tomentose : flowers very small. 

 Standard and keel more or less hairy : calyx spurred. 



Finely appressed-sUky : calyx strongly spurred : standard longest. 

 Appressed-pubemlent : leaflets narrower : petals e(iual. 

 (.lose silvery-silky : calyx slightly spurred. 



19. L. PARVIFLORUS. 



17. L. oxusTUs. 



22. L. ARGENTEUS. 



12. L. SERICEUS. 



13. L. LEUCOPHYLLUS. 



15. L. LEPIDUS. 



16. L. CONFERTUS. 



18. L. AXDERSONII. 

 24. L. MEIOXAKTHUS. 



20. L. CALCARATUS. 



21. L. LAXIFLORUS. 

 23. L. HOLOSEHICEUS. 



