274 DIADELPHIA — DECANDRiA. [Trifolium. 



Stems 4 — 6 inches high, much branched and woody at the base. 

 Leaflets 4 — 6 pairs, with an odd one, obovato-elHptical. Peduncles 

 long-. Flowers pale-yellow, mucii resombling those of Lotus cornicu- 

 latus ; but the legume is quite different and very remarkable. 



18. Onobrychis. Tourn. Saint-foin. 



1. O. sativa. Lam. (conunon Satnt-fohi) ; leaves pinnated 

 nearly glabrotis, legumes toothed at the margin and ribs, wings 

 of the corolla not longer than the calyx, stem elongated. Sm. 

 — Hedysarum Onobrychis, L. — E. Hot. t. ^Q. 



Dry chalky hills and open downs, in various parts of England. Fl. 

 June, July. 1^. — A plant cultivated to great advantage in dry, and es- 

 pecially chalky, soils. 



19. Melilotus. Tourn. Melilot. 



1. M. officinalis, Lam. {common yellow Melilot^; legumes 2- 

 seeded ovate wrinkled, racemes lax, corolla more than twice as 

 long as the calyx, petals nearly equal in length, stem erect. — 

 Trifolium Melilotus, L E. Bot. t. 1340. 



Bushy places and way-sides, frequent. Fl. June, July. 0. — 2 — 3 ft. 

 high. Leaves obovate, serrated. Flowers yellow, in unilateral, pedun- 

 culated, a.xillary racemes This plant,' while drying, smells like Anthox- 



anthum odoratum. 



2. M. leucdntha, Koch, {white 3Ielilot) ; legumes 2-seeded 

 ovate wrinkled, racemes lax, corolla twice as long as the calyx, 

 keel and wings shorter than the standard, stem erect. Hook, in 

 E. Bot. SuppL t. 2689. — M. vulgaris, I Villd.— Trifolium offici- 

 nale, /3. L. 



Denes at Yarmouth. Near Warrington. Chipstead, Surrey. Near 

 Putney. Near Edinburgh. Fl. July, Aug. '4. 



20. Trifolium. Linn. Trefoil. 

 * Legumes with several seeds. 



1. T.ornithopodioides, h. (Bird's foot Trefoil) ; flowers about 

 3 together, legumes naked with about 8 seeds twice as long as 

 the calyx, leaflets obcordate toothed at the extremity, stems de- 

 cumbent. E. Bot. t. 1047. — Trigonella, DC 



Dry sandy pastures, but not very general ; mostly on the East coast. 

 About Edinburgh. Fl. June. 0. — Stems spreading, 3 — 5 inches in 

 length. Flowers small. The long legumes, petals, and the iiabit of 

 this plant do not accord with this genus, nor yet with Trigonella. 



2. T. repens, L. (white Trefoil or Dutch Clover); heads umbel- 

 late globose, legumes with 4 seeds, calyx-teeth unequal, leaflets 

 obcordate serrulate, stems creeping. E. Bot. t, 17(J9. 



Meadows and pastures, frequent. Fl. through the summer. 1/!. — 

 Heads oifloivers white. Each flower is on a footstalk which becomes 

 recurved after flowering, and then all the legumes are drooping and 

 covered with the withered brown corollas. This Trefoil is in great re- 

 pute for pastures. The leaflets have often a dark spot at their base, with 

 a white line bordering it near the middle. 



