PAPILIONACE^. 167 



Europe, rarely extending inland along great riyers. In Britain, confined to 

 southern England and Ireland. Fl. summer, rather early. 



8. Knotted Clover. Trifolitiin striatnm, Linn. 



(Eng. Bot. t. 1843.) 



A small, tufted, more or less spreading annual, covered with short, soft 

 hairs. Stipules ovate, ending in a fine point. Leaflets obovate. Flower- 

 heads small, ovoid or globular, chiefly terminal, and closely sessile within 

 the last leaves, of which the stipules are very broad and thin, with occa- 

 sionally one or two heads sessile in the axils of the upper leaves. Calyx softly 

 hairy, with short but subulate teeth, which remain erect after flowering. 

 Corolla veiy small and pale red. 



In dry pastures, on banks and waste places, in central and southern 

 Europe to the Caucasus, extending northward into southern Sweden. Dif- 

 fused over nearly the whole of England, Ireland, and southern Scotland. 

 Fl. all summer. 



9. Boccone's Clover. Trifolium Bocconi, Savi. 



(Eng. Bot. Suppl. t. 2868.) 



Very near the knotted C, but the stems are erect or nearly so, 2 to 6 

 inches high ; the stipules narrower ; the leaflets narrow-oblong, spathulate, 

 or nearly hnear ; the flower-heads more oblong, usually two together at the 

 summit of the stem, and sometimes one or two besides, on short, lateral 

 branches. Flowers much Uke those of the knotted C, of a very pale colour, 

 the calyx rather less hairy. 



In dry pastures and waste places in southern Europe, and here and there 

 up western France. In Britain only on the Cornwall coast, near the 

 Lizard Point. Fl. summer. 



10. Rough. Clover. Trifoliuia scabraua, Linn. 

 (Eng. Bot. t. 903.) 



Very near the knotted C, and not always easy to distinguish from it. 

 Usually more procumbent and less hairy, the leaflets not so broad, the 

 flower-heads more in the axils of the leaves, and the stipules of the floral 

 leaves less prominent ; but the chief distinction lies in the calyx, of which 

 the teeth are broader, more rigid, and usually spreading or recurved after 

 flowering, giving the plant a stifier appearance. Flowers small and wliitish. 



In dry pastures and waste places, in central and southern Europe to the 

 Caucasus, scarcely exteudiig into northern Germany. In Britain, chiefly 

 near the sea, in England, Ireland, and southern Scotland, but less common 

 than the knotted C. Fl. all summer. 



11. Upright Clover. Trifolium strictum, Linn. 



(Eng. Bot. Siippl. t. 2949.) 



An erect annual, seldom 6 inches high, and perfectly glabrous. Stipules 

 very broad and thin. Leaflets narrow. Flower-heads solitary, or two or 

 three on each stem, pedunculate above the last leaves, small and globular. 

 Flowers very small. Calyx campanulate, the teeth subulate, quite glabrous, 

 and about the length of the corolla. Pod ovoid, generally 1-seeded, pro- 

 jecting from the calyx. 



In dry pastures and waste places, scattered over central and southern 

 Europe, from the Atlantic to Transylvania. In Britain, confined to the 



