Baptisia. XLVIl. LEGUMINOS^. 235 



31. LUPlNUS. Tourn. 



Lat. lupus, a wolf; because it overruns the field and devours its fertility. (Doubtfiil.) 



Calyx deeply bilabiate, upper lip 2-cleft, lower entire or 3- toothed ; 

 wings united towards the summit ; keel acuminate ; stamens mona- 

 delphous, the filamentous sheath entire ; anthers alternately oblong 

 and globose ; legume coriaceous and torulose. — Herbs. Lvs. palmate- 

 ly 5 — \5-foliate. 



1. L. PERENNIS-. Common L/upine. 



Rt. creeping, perennial ; Ifts. 7 — 9, oblanceolate, mucronate ; fls. alternate ; 

 cal. without appendages, upper lip emarginate, lower entire. — % Grows wild 

 abimdantly in sandy woods and hills. Lake Champlain to Wis. Laphavi .' S. to Ga. 

 It is a beautiful plant, much cultivated in gardens. It is often called sun-dial, 

 from the circumstance of its leaves turning to face the sun from morning till 

 night. Stem erect, soft, smoothish, a foot high. Leaves soft, downy, on long 

 stalks. Lfts. IJ — 2' by 4 — 6", lanceolate, broadest above the middle. Flowers 

 blue, varying to white, in a terminal spike or raceme. May, Jime. 



2. L. POLYPHYLLUs. Lindl. Many-leaved Lupine. — Tall ; Z/ifs. 11 — 15, lanceo- 

 late, sericeous beneath ; fis. alternate, in a very long raceme ; pedicels longer 

 than the lanceolate, deciduous bracts ; cal. ebracteolate, both lips subentire ; leg. 

 densely hairy. — % A splendid ornament of the garden, from Oregon. Stem 

 3 — 5f high. Racemes a foot or more long. Flowers scattered (subvertieillate 

 in 0. grandifolius, Lindl.), white, purple or yellow in different varieties, t 



3. L. NooTKATENsis. Donn. Noolka Sound L/iipine. — St. villous, with long, 

 spreading hairs ; lfts. oblong-lanceolate, mucronate, attenuate at base, sericeous 

 beneath ; cal. very hairy, both lips nearly entire ; bracts linear, hairy, longer 

 than the calyx. — A handspme species, from the N. W. Coast, 2 — 3f high, in 

 gardens. Leaflets about 7. Flowers purple, f 



4. L. ARBOREDs. TVcB Luphie. — Fruticose ; /?5. in whorls ; cal. appendaged, 

 lips acute, entire. — A handsome exotic shrub, 6f high, with large yellow flowers, f 



OJs.— Several annual species are occasionally sown in gardens, as L. albus, with white flowers ; L. pi- 

 losTis, with rose-colored flowera ; L. luteus, with yellow flowers, and L. hirsutus, with blue flowers, and 

 an appendaged calyx. 



32. LABURNUM. Benth. 



Calyx campanulate, bilabiate; upper lip 2, lower 3-toothed ; vexil- 

 lum ovate, erect, as long as the straight wings ; filaments diadelphous 

 (9 & 1 ) ; legume continuous, tapering to the base, several-seeded. — Ori- 

 ental thornkss shrubs or trees. Lvs. palmately trifoliate. Fls. mostly yellow. 



1. L. VULGARE. (Cytisus Laburnum. Linn.) Golden Chain. — Arborescent; 

 lfts. oblong-ovate, acute at base, acuminate ; rac. simple, elongated, pendulous; 

 leg. hirsute.— A small, ornamental tree, 15f high, from Switzerland. Flowers 

 numerous, large, in racemes If long, f 



3. L. ALPiNUM. (Cytisus alpinus. Linn.) Scotch Ldtmrnum. — Arborescent ; 

 lfts. obiong-ovate, rounded at base ; rac. long, simple, pendulous ; leg. glabrous. 

 — A beautiful tree, 30f high, native of various alpine regions of Europe. Like 

 the former, it develops numerous, brilliant yellow flowers, in long, drooping clus- 

 ters.— There are varieties with ochroleucous, white, and even purple flowers, -f 



33. BAPTISIA. Vent. 

 Chr. ffaTTToy, to dye ; a use to which some species are applied. 



Calyx 4 — 5-cleft half-way, persistent ; petals of about equal length, 

 somewhat united ; vexillum orbicular, emarginate ; stamens 10, dis- 

 tinct, deciduous : legume inflated, stipitate, many (or by abortion 

 few)-seeded. — % Lvs. palmately 3-foliaie, or simple. 



1. B. TiNCTORiA. R. Br. (Sophora. Linn. Podalyria. Lam.) Wild Indigo. 



Glabrous, branching ; lvs. palmately 3-foliate, subsessile ; lfts. roundish- 

 obovate, acute at base, very obtuse at apex; slip, setaceous, caducous; rac. 



