602 366. Trifolium. 63. LEGUMINOSiE. PI. ex. cal. 



Trifnlium floscolis albis, in glomerulis oblongis asperis, ratiliculis 

 j)roxime adiiatis, Raii Syn. 329, 11, 

 Trifolium scabrum, Lin. S, P. i084. 



Sandy and chalky fields ; annual ; May and June. 

 Stem prostrate, rough; leaves hah-y; stipules scarious, 

 lanceolate ; heads hairy ; calyx furrowed ; corolla white. 



] 3. Trifolium striatum. Streaked trefoil. 



Heads ovate, sessile, lateral and terminal ; calyx ellipti- 

 cal, hirsute, furrowed ; teeth bristlelike, growing long, 

 spreading; stipules ovate, pointed, scarious, ribbed. 



Trifolium parvum hirsutum floribus parvis dilute purpureis in glome- 

 rulis moUioribus et oblongis, semine magiio, Rail Syn. 329, 9. 

 Trifolium striafum, izn. S. P. 1085. 

 Soft-knotted trefoil. 



Dry barren sands; annual; June. 



Stem procumbent, villous, branchy ; leaflets reverse ovate 

 or reverse heartshape ; calyx furrowed ; corolla purplish. 



g. Calyx becoming inflated; legumen ^-seeded; 

 flowers 7vhite or reddish. 



14. Trifolium fragiferum. Strawberry trefoil. 

 Head roundish ; calyx when in fruit inflated, membrar- 



naceous, downy; teeth bristlelike, 2 bent back. 



Trifolium fragiferum, Raii Syn. 329,12 ; Ger. em. 1208, 4; Lin. S. P. 1086. 

 Trifolium fnigiferum Frisicum, Park. 1109. 



Damp fields and pastures ; perennial ; July and August. 

 Stem prostrate ; - leaflets toothed, bald ; corolla flesh-co*- 

 lour ; calyx reticulately veined. 



h. Lupulinum. Calyx not enlarging ; sta?idard persistent j 

 bending back ; flowers yellow ; root annual. 



15. Trifolium procumbens. Procumbent trefoil. 

 Spike ovate, imbricate ; standard furrowed ; stem pro- 

 cumbent leaflets reverse ovate, middle leaflet petioled. 



Trifolium pratense luteiim rapitulis lupnli, vel agrarium, Raii Syn. 330, 

 16. 



Trifolium procumbens, Liu. S. P. 1088, 



Trifolium agrarium, Hudson Fl. /Ingl. 328, not of Linnaeus. 



Hop trefoil. 



Dry sandy pastures ; annual: July. 



Stem diff'used, ends ascending ; leaflets toothed, bald ; 

 stipules semi-ovate, not cut, fringed ; spike many-flowered, 

 axillary, peduncled ; calyx-teeth unequal ; standard bent 

 inwards, reverse heartshape. 



