PAPILIONACEiE. 165 



1^ /Heads crowded at the base of the very short prostrate stems. . .13. Suffocated C. 



\ Heads distinct or distant along the branches 12. Clustered C, 



,„ I Calyx-teeth rigid and spreading after flowering, almost lanceolate 19 



f \ Calyx-teeth shortly subulate, erect or slightly spreading 20 



iq f Stems ascending or erect, a foot high or more 7. Sea C. 



I Stems spreading, seldom above 6 inches 10. Hough C. 



QQ f Leaflets obovate. Upper stipules very broad 8. Kjwtted C. 



" 1 Leaflets narrow-oblong or linear. Stipules narrow. Stem erect . 9. Boccone's C. 



TheAlsiJce clover (T. hyhriduni), a species allied totlie white C, but with 

 ascending not creeping stems, and more pink in tlie flowers, is now fre- 

 quently cultivated for forage, but does not appear to have as yet become 

 naturalized, although common in northern and central continental Europe. 



1. Crimson Clover. Trifolium incamatuin, Linn. 

 (Eng. Bet. Suppl. t. 2950.) 



A softly hairy annual, erect or nearly so, often slender and starved-looli- 

 ing when wild, with ovoid or shortly oblong terminal flower-heads ; but in 

 rich soils, or when cultivated, attaining 1^ to 2 feet in height, with oblong 

 or cyUndrical flower-heads sometimes 2 inches long. Stipules broad and 

 membranous. Leaflets very broadly obovate or obcordate. Calyx softly 

 hairy, with narrow pointed teeth nearly equal in length. Corolla of a rich 

 crimson, or of a pale cream-colour, 4 to 6 lines long. 



In open places, especially near the sea, in southern Europe, and, having 

 been long cultivated for fodder, has become natviralized in various parts of 

 central and even northern Europe. In Britain, the pale yellow variety, the 

 most common in a truly wild state on the Continent, appears to be indige- 

 nous on the coast of Cornwall, near the Lizard Point ; the cultivated crim- 

 son variety has only estabhshed itself in a few places in southern England. 

 Fl. summer. 



2. Hare's-foot Clover. Trifolium arvense, Linn. 

 (Eng. Bot. t. 944.) 



A slender, branching, erect annual, seldom reaching a foot in height, and 

 clothed with short soft hairs. Stipules and leaflets narrow. Flowers small, 

 in pedunculate heads, which are at first nearly globular but soon become 

 oblong or cylindrical, 6 to 9 lines long, appearing very soft and feathery 

 owing to the fine hairy teeth of the calyx projecting beyond the very small 

 corolla. 



In cornfields, dry pastures, on sandy banks, etc., throughout Europe 

 and western Asia, except the extreme north. Abundant in Britain, but 

 more in the south than in the north. Fl. summer and autumn. 



3. Starry Clover. Trifolium stellatum, Linn. 



(Eng. Bot. t. 1545.) 



A low but rather coarse annual, covered with soft hairs, and seldom above 

 6 inches high. Leaves broadly obovate or obcordate. Flower-heads globu- 

 lar, softly hairy, on rather long peduncles above the last leaves. Calyx re- 

 markable for the long subulate-lanceolate teeth, spreading like a star after 

 flowering, whilst the mouth is closed over the pod by a tuft of hairs. Co- 

 rolla shorter than the calyx-teeth, of a pale cream-colour. 



In dry pastures and waste places, in southern Europe, common round 

 the Mediterranean, reappearing in south-western France, and in Britain, on 

 the coast of Sussex near Shoreham, and perhaps in a few other localities, in- 

 troduced with ballast. FL early summer, and sometimes again in autmnn. 



