478 FABACEAE 



let elliptic or oval; peduncles 1-3 cm. long; bracts ovate; calyx— teeth subulate, 

 about 3 mm. long, one-fourth or one-third shorter than the whitish corolla. 

 Hosackia elata Nutt. Sandy soil: Wash. — Ida. — Ore. Son. — Submont. Je-Jl. 



9. HOSACKIA Dougl. Bird's-foot. 



Perennial herbs, "with leafy stems. Leaves alternate, regularly odd-pinnate, 

 with foliaceous stipules. Flowers perfect, in bracted several-flowered umbels or 

 heads. Calyx campanulate; lobes subequal. Banner broad, its claw remote 

 from the others; wings partially coherent to the very obtuse keel. Stamens 10, 

 diadelphous, the alternate filaments dilated below the anthers. Pods linear, 

 straight, or nearly so, 5-20-seeded, tardily dehiscent. 



1. H, bicolor Hook. Glabrous perennial; stem erect or decumbent at the 

 base, 2-4 dm. high; stipules ovate, more or less scarious; leaves pinnate; leaflets 

 5-9, obovate to elliptic, 1-2 cm. long, obtuse or acute; peduncles 4-10 cm. long, 

 3-7-flowered; bracts usually lacking; flowers sessile; calyx-tube 4 mm. long, the 

 lower three teeth subulate, 2 mm. long, the upper two lanceolate and more or 

 less united; corolla light yellow or the wings white; pod 6-8 cm. long, glabrous. 

 Lotus pinnatus Dougl. Wet places: B.C.— Ida.— Calif. SuhmonL Ap-Je. 



10. ANISOLOTUS Bernh. Deer-weed. 



Annuals or perennials, with leafy stems. Leaves alternate, pinnate, with an 

 even number (2-10) of leaflets, which, however, are rather irregularly arranged 

 on the rachis; stipules gland-like. Flowers solitary or in small umbels or heads, 

 on axillary peduncles. Calyx campanulate; teeth or lobes nearly equal. Petals 

 free frorn the stammal tube; banner ovate or rounded; wings oblong; keel acute 

 or rounded at the apex. Stamens 10, diadelphous, the alternating filaments 

 dilated above. Pod flat, hnear, straight, dehiscent, mostly many-seeded. 



P?.^nnV.Fi?'^L"^P*^^^* flowers subsessiie in the axils of the leaves. 1. A. hr achy car pus ^. 

 Ferennals plant appr^sed-pubescent ; flowers mostly several together, on a peduncle 



(except often in Iso. 2). j ^ 



Leaflets closely crowded on the very short rachis. oblanceolate to linear; peduncles 



less than 5 cm. long; stem erect. , 



innOTescence l-2-.flowered, usually subsessiie in the axils of the leaves; calyx-teeth 

 equaUmg the tube. 2 A. Wrightii. 



ii^Kl*^^"^® 2-.5-flowered, distinctly peduncled; calyx-teeth shorter than the 

 T a ^"'^®* 3 A viiberulus. 



pfowrS^ho^T/^i'^ '''' \^^ ^^^^^^^ ''^^^^: st^ni decumbent. " 

 I* lowers about 1 cm. long; peduncles 1-2 cm. long; leaflets linear-oblong. . 

 r>i .^ ^ 4 A, nummular lus. 



Flowers 12-15 mm. long; peduncles 4-10 cm. long.' 



l^eaflets hnear to oblong; bracts longer than the calvx; pods divaricate or re- 

 flexed. . ° 5 ^1 longebracteatus. 



B^}^ obovate or cimeate; bracts shorter than the calyx; pods erect or 

 ascendine. ^ '^a w^vwjic 



6. A. rigidus 



fnJ;t' *^^?<^l^ycarpus (Benth.) Rydb. Stem decumbent or prostrate, dif- 

 Sll r'Ji f^'' ^i d^- l^n?^ tlensely villous; leaves about 2 cm. long, sub- 

 fTn^ir^ Inn'*' "^""^^^Y ^' r^^' ^10 ^"i- l^ng densely villous on both sides, 

 vpl nw 7 R ^'^'' f ^"^^^ calyx-lobes lance-subulate, about 4 mm. long; corolla 

 lark^nhr'^r}.?'^' ^""^^^ F^"^ ''^^''^^^ ^'^^"^ 1 cm. long, viUous, 2-3-seeded Ho- 

 sackm brachycarpa Benth, Lotus humistratus Greene. Hills: s Utah-Anz.- 



ascending 



CalT S ^'S-Jl ^''''' h^^^i^tratm Greene. Hills: s 



^ravisjf ;trW?f fl^f ??-y^ ^^'^^^ Stems numerous, erect 

 Siv Ro,T Tkl?^'*', ^"^' ^'•^^ded, grayish strigose, linear or luic-u.-...^^-.- 

 Slftarv or 9 .^l '""■ ^"1^' ^^^'^^ ^«^«"y subsessiie in the axils of the leaves, 

 dr P^i^U t.!k ' kT!* ™.^' «^ 1-3-flowered peduncles; bracts 1-foholate 

 o^n^; £t. tn^^'^i^f * ^°^- I'^^g; ««™"^ about 15 mm. long, yellow or 

 mUs^ s Cor^NM P^?-^"^^'-' ^trigose, 2.5 cm. long. L. Wrightii Greene, 

 iims. s Lolo -N.M.-Ariz. Son. Submont. My-Au 



striLsf' We.^^ T (Benth.) Woot. & Standi. Stems erect, 2-3 dm. high, 

 strigose, leaves sessile leaflets from snafnUt^ +^ i; t i r ^J. U.nor. strigose, 



unch 

 mm 



T 1 i, 1 '', ""°^- * Standi. Stems erect, -^'6 am. /"&"'. 

 ssUe, leaflets from spatulate to linear, 7-15 mm. long, strigose, 

 ■ /"^e, 2-5-flowered; bracts 1-3-f oliolate ; calyx-teeth subulate, 

 olla about 1 cm. lone, li^ht v^llf^w tir.^^^ with salmon or pm^, 



