WADELPHIA DECANDRIA. [CL. XVII. 



7. T. pratense. Common Purple Clover. Heads dense, egg-shaped ; 

 stems ascending ; petals unequal ; lower calyx-tooth longer than the 



rest, which are equal ; stipules egg-shaped, bristle-pointed. Stems 



about a foot high : leaflets elliptical, entire, nearly smooth : flowers pur- 

 ple, sweet-scented. A valuable pasture plant, extensively cultivated. 

 Perennial : flowers in June and July : grows in pastures : common. 

 Eng. Bot. vol. xxv. pi. 1770. Eng. Fl. vol. iii. p. 302. 1074. 



8. T. medium. Zig-zag Trefoil. Heads egg-shaped, loose; stems 

 zig-zag; petals nearly equal ; two upper calyx-teeth rather shorter ; sti- 

 pules linear, parallel. Stems about a foot high, branched : leaflets 



elliptical, notched, hairy : flowers purple. Perennial : flowers in June 

 and July : grows in dry pastures and thickets : frequent. Eng. Bot. 

 vol. iii. pi. 290. Eng. Fl. vol. iii. p. 302. 1075. 



9. T. maritimum. Teasel-heat! ed Trefoil. Heads egg-shaped, some- 

 what hairy ; stipules lance-shaped, erect ; calyx-teeth after flowering di- 

 lated, leafy ; leaflets inversely egg-shaped.' Stems spreading, about a 



foot long : flowers pale-red. Annual : flowers in June and July : grows 

 in salt marshes, on the eastern and southern coasts of England, and in 

 Ireland. Eng . Bot. vol. iv. pi. 220. Eng. Fl. vol. iii. p. 303. 1076. 



10. T. stelldtwn. Starry-headed Trefoil. Heads roundish, hairy ; sti- 

 pules elliptical ; calyx-teeth longer than the corolla, after flowering di- 

 lated, leafy, the tube closed ; leaflets inversely heart-shaped. Stems 



spreading, hairy: flowers light-crimson. Annual: flowers in July and 

 August : found by Mr. Borrer between Shoreham harbour, in Sussex, 

 and the sea, where it has been naturalized. Eng. Bot. vol. xxii. pi. 1545. 

 Eng . FL vol. iii. p. 304. 1077. 



11. T. arveitse. Hare's-foot Trefoil. Heads oval, very hairy; stipules 

 lance-shaped, bristle-pointed ; calyx-teeth longer than the corolla, per- 

 manently bristle-shaped : leaflets narrow, inversely egg-shaped. Stem 



from four inches to a foot high, erect, branched : flowers with pale-red 

 or white petals. Annual : flowers in July and August : grows in dry 

 pastures and fields: common. Eng. Bot. vol. xiv. pi. 944. Eng. Fl. 

 vol. iii. p. 305. 1078. 



12. T. fcabrum. Hard-knitted Trefoil. Heads egg-shaped, sessile, 

 axillar; calyx-teeth unequal, lance-shaped, stiff, ultimately recurved; 



stems procumbent. Stem from three to nine inches long, stiflf, hairy : 



flowers whitish. Annual : flowers in May and June : grows in dry sandy 

 fields : not common. Eng. Bot. vol. xiii. pi. 903. Eng. FL vol. iii. 

 p. 306. 1079. 



13. T. glomerdtum. Smooth rottnil-heatled Trefoil. Heads hemispherical, 

 sessile, axillar; calyx-teeth heart haped, veiny, smooth, reflected; stems 



prostrate. Stems from three inches to a foot long, straight : flowers 



rose-coloured. Annual: flowers in June: grows in gravelly fields and 

 pastures in the east and south of England. Eng. Bot. vol.xv. pi. 1063. 

 E,,g. Fl. vol. iii. p. 307. 1080. 



14 T. itridtum. Soft-knotted Trefoil. Heads egg-shaped, sessile, 

 axillar and terminal ; calyx elliptical, furrowed, hairy, with bristle-shaped 



teeth; stems procumbent. From four to ten inches long: flowers pale 



ro^e-coloured. Annual : flowers in June : grows in sandy fields and 

 pastures: frequent. Eng. Bot. vol. xxvi. pi. 1843. Eng. Fl. vol. iii. 

 p. 307. 1081. 



