312 Ohdeb 46.— LEGUMINOS^. 



base, several-seeded. — Oriental, thornless shrubs or trees. Lvs. pal- 

 mately trifoliate. Fls. mostly yellow. 



1 L. vulgare L. Golden Chain. Arborescent; Ifis. obloug-OYate, acute at 

 base, acuminate ; rac. simple, elongated, pendulous ; leg. hirsute. — A small, orna- 

 mental tree, 15f high, from Switzerland. Fls. numerous, large, in rao. If long, 

 f (Cytisus Laburnum L.) 



2 L. alpinum L. Arborescent; Ifts. 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 bril- 

 liant, yellow fls., in long, drooping clusters. There are varieties with ochroleu- 

 oous, white, and even purple fls. 



29. TRIFO'LIUM, Toum. Clover. (Gr. Tgi,(pvXXov, (three-leaved) ; 

 Lat. trifolium ; Fr. trefie ; Eng. trefoil.) Calyx tubular or campanu- 

 late, 5-toothed, persistent ; petals more or less united at the bas(S, with- 

 ering ; vexillum reflexed ; also oblong, shorter than the vexillum ; 

 carina shorter than the alse; stamens 10, diadelphous (9 and 1); 

 legume short, membranous, mostly indehiscent, covered by and scarcely 

 longer than the calyx, 2 to 4-seeded ; seeds roundish. — Herbs. Lvs. 

 palmately trifoliate ; Ifts. with straight, scarcely reticulated veins. Fls. 

 in dense heads or spikes. 



§ Flowers yellow, in small, dense, roundish heads N"os. 1, 2 



§, Flowers cyanic, — pedicellate, finally deflexed. (a) 

 — subsessile, never deflexed. (bj 



a Heads small, on stalks some ten times longer Nos. S, 4 



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



b Calyx teeth plmnose, longer than the whitish corolla No. 7 



b Calyx teeth shorter than the purple or roseate corolla,- .Nos. 8—10 



1 T. prooiimbens L. Yellow Clovee. St. prooulnbent or ascending; Ms. 

 obtuse or retuse, denticulate, terminal one petiolulate ; slip, ovate-lanceolate acumin- 

 ate, much shorter than the petioles ; hds. small, subglobous ; cor. yellow ; sty. 3 or 

 4 times shorter than the 1-seeded leg. — (I) In dry soils, N. H. to Va. Sts. many 

 from the same root, slender, more or less pubescent, striate, 3 to 10' long, often 

 subereot. Lfts. 4 to 8" long, J to equally as wide, lateral ones placed I to 2" be- 

 low the terminal one. Hds. 2 to 3" diam., on slender peduncles 1' long. Fls. 

 at length reflexed. Jn., Jl. § Eur. 



2 T. agrarium L. St. ascending or erect; lfts. often emarginate, denticulate, 

 all subsessile; slip. Unear-lcmceolaie, cohering with and longer than the petiole; hds. 

 ovoid-elliptic ; sty. about equaling the 1-seeded leg. — (1) Sandy fields, N. Eng. Sts. 

 6 to 15' high, branched, minutely pubescent. Lfts. 5 to 10" by 1 to 3". Com- 

 mon petioles 3 to 10" loilg, the upper ones shorter than their slip. Hds. of fls. 

 twice larger than in the last, on peduncles about 1' long. Fls. at length reflexed. 

 Jl., Aug. § Eur. 



3 T. Carolinianuta Mx. Slender, diffuse; lfts. cuueate-obovate, the middle 

 one obcordate ; stip. ovate-acuminate, foliaceous ; hds. long-stalked ; cal. ieeth 

 thrice longer than its tube; leg. 4-seeded. — (J) Fields, S. Car. to Fla. and Tex., 

 almost forming a turf and poor pasturage. Sts. 6 to 12' long, many from one 

 root. Fls. white or purphsh. Fed. 4 to 6' long. Mar. — May. 



4 T. repens L. "White Clover. Shamrock. St. creeping, difiuse ; lfts. obcor- 

 date, denticulate ; slip, narrow, scairious ; hds. subumbellate, on very long, axil- 

 lary peduncles; leg. about 4-seeded; cal. ieeth shorter than the lube. — 2J! In all 

 soils, mountainous, meadow or rooky, throughout N. Am. Sts. several from the 

 same root, extending 6 to 12', rooting at the joints. Fed. angula^, much longer 

 than the lvs. Fls. white. May — Sept. Highly valued for pasturage. 



5 T. refl^xum L. Buffalo Clover. Pubescent; ascending or procumbent; 

 lfts. ohovate or oblong-obovate, serrulate, some of them emarginate ; stip. leafy, 

 semioordato ; hds. umbel-like ; cal. teeth nearly as long as the cor. ; leg. about 

 4-seeded. — @ Prairies and meadows, W. and S. States. St. 8 to 16' high. Lfte. 

 subsessile, 7 to 8'' by 4 to 5" ; petioles 1 to 2' long. Hds. large and handsome- 

 Fed. 1 to 3' long. Fls. rose-red, turning brownish when deflected. Apr. — Jn. 



