Baptisia. XLVIl. LEGUMINOS.E. 335 



31. LUPlNUS. Tourn. 

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



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 t'orulose. — Herbs. Lvs. pabnate- 

 ly 5 — \b-foliate. 



1. L. PERENNis. Common Lvpine. 



Rt. creeping, perennial ; //?.<. 7 — 9, oblanceolate, mucronate ; Rs. alternate ; 

 cai. without appendages, upper lip cmarginate, lower entire. — % Grows wild 

 abundantly in sandy woods and hills, Lake Champlain to Wis. Lapham ! S. to Ga. 

 It is a beautiful plant, much cultiv^ited 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. Llts. li — 2' by 4 — 6", lanceolate, broadest above the middle. Flowers 

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



2. L. POLYPHYLLUs. Lindl. Many-lcavcd LvpiTu:. — Tall ; //i!^. 11— 15, lanceo- 

 late, .sericeous beneath ; /.S-. alternate, in a very long raceme; jmlicds longer 

 than the lanceolate, deciduous bracts ; cal. ebracteolatc, both lips subentire ; Leg. 

 densely hairy. — 7]- A splendid ornament of the garden, from Oregon. Stem 

 3 — 5t' high. Racemes a foot or more long. Flowers scattered (subverticillate 

 in p. grandlfolius, Lindl.), white, purple or yellow in diflerent varieties, f 



3. L. N00TK.A.TEN-SIS. Doun. Nootka So^md L/upine. — St. villous, with long, 

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

 beneath; <:«/. very hairy, both lips nearly entire; bracts linear, hairy, longer 

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

 gardens. Leaflets about 7. Flowers purple, f 



4. L. AUBOREUs. Tree Lnipinc. — Fruticose ;/?.<. in whorls ; cal. appendaged, 

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



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

 l09us. with rose-colored Howera ; L. luleus, with yellow flowers, and L. hirsutus, with blue flowers, and 

 an appendaged caly.\. 



32. LABURNUM. Benth. 



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



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



(9 «fc 1) : legume continuous, tapering to the base, several-seeded. — Ori- 



ental thornless shrubs or trees. Lvs. palmatcly trifoliate. Fls. viostly yellow. 



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

 If's. oblong-ovate, acute at base, acuminate ; rac. simple, elongated, pendulous; 

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

 numerous, large, in racemes If long, f 



2. L. ALPl-NUM. (Cytisus alpinus. Linn.) Scotch Laiynrnum. — Arborescent ; 

 Ifls. oblong-ovate, rounded at base ; rac. long, simple, pendulous ; kg. 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. ffavTw, 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, cmarginate ; stamens 10, dis- 

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

 few)-seeded.— "4- Lvs. palmatcly o-Jvliate, or simple. 



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



Glabrous, branching ; lis. palmatcly 3-foliate, subsessile ; Ifts. roundish- 



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



