OP ARTS AND SCIENCES : MAY 13, 1873. 529 



subglabrous. Nothing in our herbariums accords with this. A speci- 

 men collected by Spalding, and noted by Dr. Gray as the same as 

 Douglas's plant in the Kew herbarium, has ascending sparingly leafy 

 stems, li° high; pubescence silky, loosely appressed ; leaflets 8-10, 

 acute, 1-2' long, narrowly lanceolate ; raceme rather dense, pedun- 

 cled ; bracts deciduous ; flowers subverticillate ; pedicels 1 — 2" long ; 

 calyx short and short-lipped, the upper lip slightly 2-toothed ; petals 

 4 - 5" long, apparently yellow, the banner slightly hairy and keel cili- 

 ate ; ovules 4-5. 



A specimen of Wyeth's from " Medicine Clay Prairie," noted as 

 " pale-yellow with a dark spot in the centre of the vexillum," much 

 resembles this, but has flowers 6 - 1" long, slender pedicels, and the 

 banner naked. Another very similar plant of Douglas's, from the 

 junction of Lewis's and Clark's rivers, named L. sericeus in herb. Ben- 

 tham, has also longer and more slender pedicels, longer calyx-lobes, 

 the banner naked, and the leaves more numerous and with shorter 

 petioles. Still another specimen of Douglas's from " Oregon or Rocky 

 Mts.," referred to L. sericeus in Torr. & Gray's Flora, has both 

 banner and keel naked. These are both apparently yellow. 



21. L. sericeus, Pursh. Rather stout, suberect, 1-2° high ; pubes- 

 cence more or less coarsely villous or subsilky, spreading ; stipules 

 usually long-setaceous ; leaflets 5-8, rarely 10, narrowly oblanceolate, 

 1 - 2£-' long, acute ; racemes short-peduncled ; bracts deciduous, subu- 

 late-setaceous, often much exceeding the calyx ; flowers subverticillate 

 or scattered, on short pedicels, blue or ochroleucous ; calyx strongly 

 gibbous but scarcely saccate, minutely bracteolate, densely silky-villous, 

 lips nearly equal, the upper slightly toothed, the lower subentire ; 

 petals equal, 6" long, banner hairy, keel ciliate; ovules 4-5; pod 

 densely hairy, V long. — Oregon to Northern Nevada and the Wah- 

 satch. 



22. L. leucophyllus, Dougl. Stout, 2-3° high, leafy, densely 

 silky-tomentose throughout ; stipules long-setaceous or subulate ; leaflets 

 7-10, oblanceolate or cuneate-oblong, 1 - 2\' long, acute, the petioles 

 about equalling the leaves or the lower twice longer ; raceme dense, 

 6-12' long, sessile or nearly so; bracts subulate or linear, shorter or 

 longer than the calyx, subpersistent or deciduous ; flowers scattered or 

 subverticillate, nearly sessile ; bractlets small, setaceous or oblong-sub- 

 ulate ; upper calyx-lip rather broad, more or less deeply 2-cleft, the 

 lower slightly longer, subentire ; petals blue or pink, equal, 4 - 6" long, 



VOL. VIII. 67 



