TRIFOLIUM.] LEGUMINOSJS. 99 



Salt marshes and meadows, from Gloster and Lincoln to Somerset ; Ireland ; fl . 

 June-Aug. Annual. Stems 6-18 in., rigid, decumbent or ascending. Leaflets 

 ^- in., almost quite entire. Heads | in., terminal, elongating in fruit. 

 Calyx with a 2-lipped contraction in the throat ; tube ribbed ; teeth reaching 

 half-way up the corolla. Pod 2-valved. DISTBIB. "W. and S. Europe, 

 Holland to Spain, Greece and N. Africa. 



8. T. stria'tum, L. ; softly hairy, leaflets obovate, stipules membranous 

 free portion broadly triangular tip recurved, heads terminal and axillary 

 ovoid sessile, calyx ventricose, teeth short spinescent triangular-subulate 

 1 -nerved spreading in fruit. 



Dry pastures, from Forfar southd. ; rarer in Scotland ; very rare in Ireland ; 

 Channel Islands; fl. June- July. Annual. Stems 4-12 in., spreading, pro- 

 strate or ascending. Leaflets |-| in., almost quite entire, petiole 2 in. ; stipules 

 of the leaves under the heads very much dilated. Heads J-| in., dense, 

 broadest at the base. Flowers \ in. rosy. Calyx-tube ovoid, ribbed, mouth 

 contracted; teeth shorter than the corolla. DISTRIB. From Gothland southd., 

 N. Africa, Caucasus. YAK. erecta, Leight., is an erect luxuriant form. 



9. T. sca'brum, L. ; pubescent, leaflets narrowly or broadly obovate, 

 stipules rather rigid, free portion short triangular-subulate, heads terminal 

 and axillary ovoid sessile, calyx-tube ribbed, teeth, triangular spinescent 

 1 -nerved erect in flower lengthening spreading rigid and recurved in fruit. 

 Sandy and stony pastures, &c., in England; E. Scotland, from Forfar southd. ; 



E. Ireland ; Channel Islands ; fl. May-July. Annual. Stems 4-10 in., rigid, 

 stout, prostrate, zigzag. Leaves very shortly petioled ; leaflets -| in., rigid, 

 strongly nerved, toothed. Heads |- in. long, broadest in the middle. 

 Flowers minute, white. Calyx-tube purplish ; teeth equalling the corolla. 

 Pod minute. DISTRIB. From Belgium southd., W. Asia, N. Africa. 



SECTION 3. Heads many-fld., usually axillary, rarefy both axillary and 

 terminal; pedicels distinct, short or long, bracteate. Calyx not inflated ; 

 throat naked ; teeth equal or the upper longest. Pod 2-4-seeded (or 1-seeded 

 through imperfection). 



10. T. glomera'tum, L. ; glabrous, leaflets obovate acute or obcordate, 

 stipules ovate with long points, heads axillary and terminal globose sessile, 

 calyx-teeth short ovate 1-uerved spinescent reticulated spreading in fruit. 

 Gravelly and sandy pastures, &c.,rare ; Norfolk and Kent to Cornwall; Wick- 

 low ; Channel Islands; fl. June. Annual. Stems 6-12 in., prostrate, spread- 

 ing, slender. Leaflets -3 in., nerves fine but ending in strong teeth. Heads 

 in. diam., distant. Flowers blue-purple, subsessile. Calyx-teeth nearly 

 equal, shorter than the corolla, contracted at the base. Standard persistent, 

 scarious, striate. DISTRIB. "W. France, Spain, and Mediterranean region . 



11. T. suff oca' turn, L. ; glabrous, petioles very long, leaflets obcordate, 

 stipules ovate acuminate, heads sessile ovoid, calyx campauulate, teeth not 

 spinescent recurved in fruit exceeding the corolla. 



