Baptisia. XLVIl. LEGUMINOSiE. '235 



31. LUPlNUS. Tourn. 



Lat. lupus, a wolf; because it overruns the field and devoum iu fertility. (Doubtful.) 



Calyx deeply biliibiate, 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. JLvs. palmate- 

 ly 5 — \5-foliate. 



1. L. rKRKNNLs. Cmnmon Lvpinc. 



Rl. creeping, perennial ; Ifts. 7—0, oblanccolate, mucronate ; lb. alternate ; 

 cal. without appendages, upper lip cmarginate, lower entire. — 71. Grow.s wild 

 abundantly in sandy woods and hills, Lake Champlainto Wis. Laphavi ! S. to Ga. 

 It is a beautii'ul plant, much cultivated in gardens. It is often called sun-dial, 

 Irom 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. Llls. 1^ — 2' by 4 — G", lanceolate, broadest above the middle. Flowers 

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



2. L. POLYPHYLLUS. Lindl. Many-lcavcd Lnipiiie. — Tall ; Ifts. 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 (subverticillate 

 iu p. grandifolius, Lindl.), white, purple or yellow in different varieties, -f 



3. L. NooTKATENsis. Donu. Nootka Smnd Lnipine.—St. villous, with long, 

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

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

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

 gardens. Leaflets about 7. Flowers purple, f 



4. L. ARBOREUs. Tree L^^pine. — Fruticose ; fls. in whorls ; cal. appendaged, 

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



06s.— Several annual species are occasionally sown in gardens, as L. albus, with white flowers ; L. pi- 

 lams, with rose-colored flowers ; L. luteus, with yellow flowers, and L. hirsuttts, with blue flowers, and 

 an appendaged caly.\. 



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 thornlcss shrubs or trees. Lvs. imlmatcly trifoliate. Fls. mostly yellow. 



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

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

 leg. hirsute. — A small, ornamental tree, I5f high, from Switzerland. Flowers 

 numerous, large, in racemes If long, f 



2. L. ALPiNUM. (Cytisus alpinus. Linn.) Scotch Laburnum. — Arborescent ; 

 Ifls. oblong-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. 

 Gr. (iaTTTOi, 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. yalmately d-foliate, or simple. 



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



Glabrous, branching; Irs. palmately 3-foliate, subsessile; Ifts. roundish- 

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



