Trifolium uniflorum, L.

24. T. uniflorum L. View in CoL , Sp. Pl. 771 (1753).

Taproot woody; stems 1 —3(—6) cm, caespitose, procumbent. Internodes very short. Leaflets 4-10 mm, orbicular, obovate or rhombic, acute or obtuse, apiculate, strongly veined with cusped teeth, often appressed-pubescent beneath. Petioles 1 O-3O(-7O) mm, glabrous or appressed-pubescent. Stipules broadly triangular, longacuminate, membranous, imbricate. Pedicels 1 -7 mm, usually shorter than the calyx-tube, curved or deflexed and sometimes much thickened in fruit. Calyx-tube 6-7 mm, glabrous or pubescent; teeth subequal, narrowly lanceolate, straight, usually much shorter than the tube; corolla (12—) 15—20(—27) mm, white, cream, purple or parti-coloured; standard strongly recurved. Legume linear, acute, pubescent above. Dry pastures and stony places. E. Mediterranean region, extending to Sicilia. Cr Gr It Si Tu [*Ga].

Very variable in indumentum, in size and shape of the leaflets, length of peduncles, length, thickness and curvature of the fruiting pedicels, length of calyx-teeth (which may equal the tube), and length and colour of the corolla. T. savianum Guss. , FI. Sic. Prodr. 2: 488 (1828), from Sicilia and Calabria, has strongly recurved and thickened fruiting pedicels and is more pubescent than plants from other areas. It may merit subspecific rank. Sect. MisTYLLUs (C. Presi) Godron. Glabrous annuals. Heads pseudoterminal with prominent, glumaceous, striate, free bracts. Calyx 20- to 35-veined, inflated more or less equally on all sides in fruit; teeth setaceous, recurved. Legume included, 1- to 4- seeded.