110 THE PEAFLOWER TRIBE. [Trifolium. 



16 



/ Flowers red 5. T. pratense. 



\ Flowers cream-coloured 4. T. ochroleucum. 



i Heads globular. Calyx glabrous, with short recurved teeth . . . .18 

 17 1 Heads ovoid or oblong when fully out. Calyx more or less hairy, with rigid, 



( erect, or spreading teeth 19 



ls /Heads crowded at the base of the very short prostrate stems 13. T. suffocatum . 



1 Heads distinct or distant along the branches . . .12. T. glomeratum. 

 1Q / Calyx-teeth rigid and spreading after flowering, almost lanceolate . . .20 



\ Calyx-teeth shortly subulate, erect or slightly spreading 21 



9n / Stems ascending or erect, a foot high or more . . . 7. T. maritimum 



\ Stems spreading, seldom above 6 inches 10. T. scabrum. 



91 ( Leaflets obovate. Upper stipules very broad . . . 8. T. striatum. 



X Leaflets narrow-oblong or linear. Stipules narrow. Stem erect 9. T. Bocconi. 



1. T. incarnatum, Linn. (fig. 245). Crimson C. — A softly hairy 

 annual, erect or nearly so, often perennial, slender and starved -looking 

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

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

 oblong or cylindrical 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 naturalised in 

 various parts of central and even northern Europe. In Britain, a pale 

 yellow perennial form, T. Molinerii, Balb., the most common in a wild 

 state on the Continent, is indigenous near the Lizard Point ; the culti- 

 vated crimson variety is established only in a few places in southern 

 England. FL summer. 



2. T. arvense, Linn. (fig. 246.) Hare's-foot G. — 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 small corolla. 



In cornfields, dry pastures, on sandy banks, &c, 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. T. stellatum, Linn. (fig. 247). Starry 0. — A low but rather coarse 

 annual, covered with soft hairs, and seldom above 6 inches high. 

 Leaves broadly obovate or obcordate. Flower-heads globular, softly 

 hairy, on rather long peduncles above the last leaves. Calyx remarkable 

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

 ing, whilst the mouth is closed over the pod by a tuft of hairs. Corolla 

 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 on the 

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

 introduced with ballast. FL early summer, and sometimes again in 

 autumn. 



4. T. ochroleucum, Huds. (fig. 248). Sulphur 0. — A perennial, with 

 the habit and foliage as well as the inflorescence of T. pratense, and the 

 same-sized flowers, but the leaflets are usually rather narrower, the 

 flower-heads more ovoid, and the flowers cream-coloured, with rather 

 shorter teeth to the calyx, the lowest tooth twice as long as the others. 



