PEA AND BEAN TRIBE 69 



downy ; the flowers are cream-coloured, turning brown as they 

 fade. Found only in some of the eastern counties of England ; 

 rare, dry pastures. — Fl. July, August. Perennial. 



5. T. pratense (Purple Clover). — Stem decumbent or erect, 1-2 

 feet high ; flowers in dense, roundish oblong heads, purplish red, 

 sweet scented ; calyx hairy, its bristle-like divisions half as long as 

 the corolla ; stipules broad, terminating abruptly in a bristle 

 point ; leaflets broad, obovate, or inversely heart-shaped, notclied 

 or entire. The common Clover of meadows, where it forms a valu- 

 able part of the hay crop. The long tubes of the corolla abound in 

 honey, on which account they are often called by children Honey- 

 suckles. — Fl. all the summer. Perennial. 



6. T. medium (Zigzag Clover). — Not unlike the last, but dis- 

 tinguished by its slenderer and more erect habit, the zigzag growth 

 of its stems, and especially by its narrower leaflets, and tapering, 

 not abrupt stipules. Dry pastures and bushy places, common. 

 It thrives better than the preceding in dry soils. — Fl. July, August. 

 Perennial. 



7. T. marittmum (Teazel-headed Trefoil). — Stem spreading, 

 slender, pubescent ; flowers in terminal roundish heads ; calyx-teeth 

 broad, poinfed, and rigid, shorter than the corolla, finally becoming 

 enlarged and spreading ; stipules awl-shaped, very long ; flowers 

 small, pink. Salt marshes, not common. — Fl. June, July. 

 Annual. 



8. T. striatum (Soft Knotted Treloil). — Stems spreading ; the 

 whole plant covered more or less with silky hairs ; flowers light 

 purple, in downy, terminal heads ; calyx rigid, furrowed with straight, 

 unequal, awl-shaped teeth, and swollen when in fruit. Barren 

 places, especially near the sea. — Fl. June, Jiuly. Annual. 



9. T. Bocconi (Boccone's Clover). — A small, erect species, 2-6 

 inches high, with roundish heads of small pale pink flowers, the 

 heads usually growing in pairs. Found only near the Lizard in 

 Cornwall ; dry places. — Fl. July. Annual. 



10. T. scabrmn (Rigid Trefoil). — Flowers in dense prickly heads, 

 which are both terminal and axillary ; calyx-teeth unequal, very 

 rigid, finally spreading ; stems prostrate. A small plant, with in- 

 conspicuous whitish flowers, and remarkable only for its prickly 

 calyces, especially when in fruit. Barren places, especially near 

 the sea. — Fl. June, July. Annual. 



11. T. strictnm (Upright Clover). — Stems upright, about 6 inches 

 high ; flower-heads globular, 1-3 on a stem ; flowers small, whitish ; 

 leaflets narrow, toothed ; legume 1 or 2-seeded, bulged near the 

 summit, longer than the calyx. Found only in the Channel Islands 

 and at the Lizard in Cornwall. — Fl. May and June. Annual. 



12. T. glomeratum (Smooth Round-headed Trefoil). — Flowers in 



