122 LEGUMINOS^E. Lupinus. 



* * Dwarf perennials, mostly cespitose : racemes usually short and dense ; bracts 

 somewhat persistent ; flowers subverticillate, on short pedicels : iipper calyx-lip deleft 

 (^-toothed in L. aridus), the lower 3-toothed : keel ciliate: ovules 3 to 6 : pod hairy, 

 oblong, 3 ^-seeded. 



25. L. aridus, Dougl. Stems cespitose, 2 or 3 inches long : pubescence villous, 

 both loose and appressed : leaflets 5 to 7, oblanceolate, an inch long or less, acute, 

 the petioles 3 or 4 times longer : raceme dense, 2 or 3 inches long ; peduncle 

 shorter than the leaves ; bracts nearly equalling the calyx : petals purple, 5 lines 

 long ; the elliptical standard usually shorter : pod 5 lines long. Lindl. Bot. Reg. 

 t. 1242 ; Watson, 1. c. 533. 



Var. Lobbii, Watson, 1. c. Leaflets obovate or oblanceolate, half an inch long, 

 the petioles 2 or 3 times longer : peduncles exceeding the leaves : calyx-lips more 

 strongly toothed : standard broader. 



Washington Territory and Oregon : the variety in the higher Sierra Nevada (Lobb) ; above 

 Ebbettand Sonora Passes, at 8,500 and 12,000 feet altitude, Brewer. 



26. L. minimus, Dougl. Appressed silky-villous : stems 3 to 6 inches high : 

 leaflets 5 to 7, obovate or oblanceolate, 3 to 8 lines long, mostly acutish, the peti- 

 oles 3 or 4 times longer : peduncles equalling or exceeding the leaves : bracts linear : 

 upper calyx-lip deeply bitid : petals purple, 4 or 5 lines long; the standard orbicular. 



-Hook. Fl. i. 163; Watson, 1. c. 534. 



Oregon and Washington Territory, to Northwestern Wyoming (Parry), and in the high Sierra 

 Nevada ; above Cisco (Kellogg) ; Summit Station, in shade, Greene, 



27. L. Breweri, Gray. Stems 6 inches long or less, from a spreading branched 

 woody caudex, very leafy : pubescence dense, silky, appressed : leaflets 7 to 10, 

 obovate, obtuse, 4 to 6 lines long, at least half as long as the petiole : racemes very 

 short, the peduncle equalling the leaves ; bracts short : calyx-lips nearly equal ; the 

 upper deeply bifid, the lower shortly and equally toothed : petals blue, equal, 3 to 

 4 lines long ; the standard orbicular. Proc. Am. Acad. vi. 334 ; Watson, 1. c. 



In the Sierra Nevada from Mt. Pinos and the North Fork of the Kern Eiver, from 8,000 to 

 12,000 feet altitude (Rothrock) and Yosemite Valley, at 6,000 to 8,000 feet altitude (Brewer, 

 Gray), to Sierra Co., Lemmon Stems sometimes very short and densety matted. 



28. L. Lyallii, Gray. Stems leafy, from a spreading woody caudex : pubes- 

 cence dense, villous, appressed : leaflets 5 or 6, obovate, 3 or 4 lines long, acutish, 

 the petioles much longer : racemes very short, the peduncles much exceeding the 

 leaves ; bracts short : calyx-lips nearly equal : petals purple, five lines long, nearly 

 equal ; the standard elliptical. Proc. Am. Acad. vi. 334 ; Watson, 1. c. 



Var. Danaus, Watson, 1. c. Stems less leafy : pubescence less abundant : flowers 

 nearly white ; the keel tipped with dark-purple. L. Danaus, Gray, 1. c. 



Alpine ; summits of the Cascade Mountains, Washington Territory (Lyall) ; the variety on Mt. 

 Dana, at 12,500 feet altitude (Bolander), and on the North Fork of Kern River, at 8,000 feet, 

 Rothrock. 



* * * Annuals: leaflets mostly 5 to 7 (in L. leptophyllus, 8 to 10) : upper calyx-lip 

 2-parted or bifid : pod linear, 4 - S-seeded. 



-f- Floivers verticillate : bracts deciduous, 



29. L. affinis, Agardh. Stem a foot high, rather stout : pubescence very short, 

 more or less spreading : leaflets broadly wedge-obovate, an inch long or more, 

 emarginate or obtuse, smoother above ; the petioles twice longer : peduncles long ; 

 bracts short : petals 5 lines long ; the keel usually naked : ovules 5 to 7. Sy- 

 nopsis, 20, in part; Watson, 1. c. 535. L. cervinus? Kellogg, Proc. Calif. Acad. ii. 

 229, fig. 73. 



From San Francisco and Bear Valley (Kellogg) to San Diego ; in early spring. Distinguished 

 from the larger-flowered forms of the next species by its short pubescence, broader and obtuser 



