94 LEGUMINOS^E. [TRIFOI.H-M. 



at length reflexed, flowers drooping, calyx-tube campanulate gibbous, 



teeth subulate nearly equal unaltered in fruit. Alsike Clover. 



Fields, &c., introduced with clover, and now often replacing it ; fl. June-Aug. 

 Perennial. Stems 2-10 in., flexuous. Petioles long ; leaflets -! in., 

 toothed. Stipules herbaceous, nerves green. Heads $-1 in. diam., depressed 

 (from the drooping flowers) ; peduncles 2-4 in. Flowers ^ in., white or rosy. 

 Calyx white, teeth green. Standard twice as long as the calyx, striate, 

 folded over the 2-seeded pod. DISTRIB. Europe, N. Africa, W. AJUk 



VAR. 1, hi/liriil' ma proper ; stem stout fistular stipules few-nerved. Natu- 

 ralized at Saffron Walden. VAR. 2, el'egans, Savi (sp.) ; stem weak decum- 

 bent solid, leaves more sharply toothed, stipules with several nerves, heads 

 small. 



14. T. re'pens, L. ; glabrous, leaflets obovate or obcordate, stipules 

 lanceolate acuminate, heads all axillary very long-peduncled g] 

 pedicels at length reflexed, calyx-tube campanulate gibbous, teeth triangular 

 unaltered in fruit. White or Dutch Clover. 



Meadows and pastures, abundant ; ascends to 2,700 ft. in the Highlands ; fl. 

 May-October. Perennial. Stems 1-18 in., creeping. Leaflet* ^-1 in., 

 toothed, with often a white semilunar band towards the base ; nerves 

 slender ; petioles 2-4 in. Heads ^-1 in. diam.; peduncles 3-6 in. F/i,,r, ,-.? 

 nearly \ in., white or rosy. Standard persistent, brown, covering the pod, 

 much longer than the calyx. Pod elongate, 4-6-seeded. DISTBIB. Europe 

 (Arctic), N. Africa, N. and W. Asia to India ; N. America (indigenous, 

 A. Gray). 



SECTION 4. Heads many-flowered, all axillary ; pedicels short, braeteate. 

 Calyx 2-lipped, becoming inflated above, membranous, reticulated ; throat 

 naked ; teeth equal, the upper pair lengthening. Corolla withering 

 standard deciduous. Pod sessile, 1 2-seeded.. 



15. T. fragif'emm, L. ; glabrous, leaflets obovate or obcordate, stipules 

 oblong-triangular with a long point, heads globose dense-flowered long- 

 pi-duncled, outer bracts lanceolate as long as the calyx, calyx-tulie <lu\\ n\ 

 above striate vesicular, 2 upper teeth enlarged and deflexed in fruit. 

 Meadows and ditches, from Westmoreland southwards ; rare and local in 



Scotland and Ireland ; fl. July-Aug. Perennial. Stems 6-12 in., creeping. 

 II "ills ][ in. diam. Flowers Jin., rose-purple. Pod ovoid compressed, 

 reticulate, 1 -2-seeded. DISTRIB. Europe. N. Africa, W. Asia to X.\V. 

 India. Habit and appearance when flowering of T. repem, from which the 

 large bracts distinguish it ; in fruit widely different. 



SECTION 5. Heads many-flowered, axillary, globose, long-pedum led ; 

 pedicels short or 0, bracteate. Flowers at length pendulous. Calii.r imt 

 inflated ; throat naked ; teeth equal, or upper shorter. Corolla yellow ; 

 standard persistent, enlarged and bent down over the fruit. Pod stalked, 

 1- rarely 2-seeded. Leaves pinnately or palmately 3- rarely 5-foliolate. 



16. T. procum'bens, L. ; stems pubescent, leaves more or less pinnate! y 

 3-foliolate, leaflets obovate or obcordate, heads many and dense-flowered, 

 standard broad slightly convex arching but not folded over the pods. T. 

 agra'rium, Huds. Hop Trefoil. 



