OKDER 43. LEGUMINOS^E. 91 



4 It. roLYPHYLurs. Lfts. 11 15, lanceolate ; calyx lips subeutire. Oreg. 31'. Purp.-wh. 



5 Li. NOOTKATENSIS. Villous ; Ifts. 5 9, oblong; cal. lips subentire. N.W. Coa*t. 2f. Pur. 



6 Li. HARTWKGIJ. Hairy ; Ifts. 79, obi. obtuse ; stip. and bracts setaceous. Mex. Blue 



7 Li. VARias. Small and delicate ; calyx appendaged, lips 2-nd and 3-fid. Blue. 



31. LABURNUM, Benth. Calyx campanulate, bilabiate, upper lip 2-, 

 lower 3-toothed. Vex. ovate, erect, as long as the straight wings. Fil. 

 diadelphous (9 and 1). Leg. continuous, tapering to the base, several- 

 seeded. > ^i Leaves palmately trifoliate. Flowers mostly yellow. 



1 Li* VTJLGAKE L. Golden Chain. Arborescent ; Ifts. obloug-ovate, acute at base, acu- 



minate ; raceme elongated (If), pendulous ; legume hirsute. Europe. 15f. 



2 Tim ALPINUM L. Arborescent; Ifts. oblong-ovate, rounded at base; raceme long, sim- 



ple, pendulous ; legume glabrous. Alps. 30f. 



32. TRIFOLIUM, Tourn. CLOVER. (TpicpvXXov (three-leaved); Lat. 

 trifolium ; Fr. trefte ; Eng. trefoil.) Calyx 5-toothed. Pet. united at the 

 base, withering. Vex. reflexed. Alae oblong, shorter than the vexilluui. 

 Carhia shorter than the alae. Stam. 10, diadelphous (9 and 1). Legume 

 mostly indehiscent, covered by and scarcely longer than the calyx, 1-4- 

 seeded. Seeds roundish. Herbs. Leaves palmately trifoliate. Leaflets 

 with straight veinlets. Flowers in heads or spikes. Figs. 233, 354. 



Flowers yellow, in small, dense, roundish heads. Legume 1-seeded Nos. 1, 2 



Flowers cyanic, c pedicellate, finally deflexed . . . (a) 

 c eubsessile, never deflexed. . .(6) 



a Heads small, on stalks some ten times longer. Legume 4-seeded Nos. 3, 4 



a Heads large, on stalks two or three times longer Nos. 5, 6 



6 Calyx teeth plumose, longer than the whitish corolla No. 7 



b Calyx teeth shorter than the purple or roseate corolla Nos, 810 



1 T. procumbens L. Yellow Clover. St. procumbent or ascending; Ifts. denticu- 



late, terminal one stalked ; stip. ovate-lanceolate, acuminate, much shorter than the 

 petioles ; heads small, subglobous ; style short. (I) Dry soils, N. H. to Va. 1 2f. Jn. 



2 T. agrarium L. St. ascending or erect ; Ifts. denticulate, all subsessile ; stipules 



linear-lanceolate, cohering with and longer than the petiole ; heads ovoid-elliptic ; 

 style equalling the pod. Dry fields, N. H. to Va. If. July. 



3 T. Carolinianum MX. Slender, diffuse; Ifts. cuneate-obovate, the m*0dle one 



obcordate ; stip. ovate-acuminate, foliaceous ; cal. teeth thrice longer than its tube. 

 Fields, S. 



4 T. repens L. White Clover. Shamrock. St. creeping, diffuse ; /fts. obcordate, den- 



ticulate ; stip. narrow, scarious ; cal. teeth shorter than the tube. ii Pastures, &c. 



5 T. reflexum L. Buffalo Clover. Pubescent ; ascending or procumbent ; Ifts. obo- 



vate, serrulate ; stip. leafy, semicordate ; cal. teeth nearly as long as the corolla ; leg. 

 4-seeded. Prairies, W. and S. 8 10'. April June. 



6 T. stoloniferum Muhl. Glabrous, creeping; Ifts. broadly obcordate, denticulate ; 



etip. leafy, ovate lanceolate ; cal. teeth not half the length of the corolla : Jegnme 

 2-seeded. W. Slates. 6 12'. May, June. 



7 T. arvense L. Hds. cylindrical, very hairy ; cal. teeth setaceous, longer than the cor. ; 



leaflets narrow-obovate. Dry, sandy fields. 5 1(X. June Aug. Eur. 



8 T. pratense L. Red Clover. Ascending, thinly hirsute ; Iftp. spotted, oval, entire ; 



etip. ovate, cuspidate-acuminate ; heads sessile ; lower tooth of the cal. longer than 

 the four others which are equal, y. Fields and meadows. 2f. 



9 T. medium L. Zig-zag Clover. St. suberect, branching, flexuons, nearly gla- 



brous ; Ifts. not spotted, objong, subentire ; stip. lanceolate, acuminate ; heads otoid- 

 globous, pedunc Uate ; cal. teeth setaceous, hairy, u Hills, N. $ Eur 



