LEGUMINOS^ 75 



fragiferum, L., Strawberry Trefoil, with very light pink 

 flowers, and calyx greatly swollen in fruit ; T. arvense^ 

 L., Hare's-foot Trefoil, very hairy, with small pink 

 flowers ; T. striatum, L., hairy, procumbent, with minute 

 flowers; T. rubenSj L., with glabrous stem and leaves, 

 and oblong-cylindrical flower-heads ; T. hybridum, L., 

 with flowers at first white, changing to pink, and erect 

 hollow stem, in damp meadows ; and T. elegans, Sav., 

 with smaller heads than the last, and flowers pink from 

 the first, are lowland species. 



The following are alpine or sub-alpine: — T. alpinuin, 

 L. ; stemless, flowers large, up to i in. in length, light 

 red, in 3-8-flowered spikes, lower tooth of calyx longer 

 than the others, leaflets linear, serrate ; alpine pastures, 

 frequent. T, alpestre, L. ; stem short, flowers smaller, 

 spike many-flowered, calyx-tube hairy, leaflets denticu- 

 late ; alpine pastures ; Switzerland, Pyrenees. T. Thalii, 

 Vill. ; stemless, flowers first white then pink, in many- 

 flowered spikes, calyx-teeth nearly equal ; pastures, espe- 

 cially Southern, local. T. inontanuniy L. ; flowers very 

 pale pink, flower-stalk deflexed after flowering, calyx- 

 teeth equal, leaflets hairy beneath ; alpine pastures. 



B. Flowers white or yellowish white: — T. repens^ L., 

 White or Dutch Clover; and scabrum, L., a small prostrate 

 plant, with minute white flowers; are English and lowland. 

 The remainder are alpine or sub-alpine: — T. pallescens, 

 Schreb. ; stem prostrate, flowers yellowish-white, keel 

 finally pink, flower-stalk reflexed after flowering; pas- 

 tures; Switzerland, Carniola, Tirol, Pyrenees. T. gla- 

 reosum, Schleich. ; flowers white, pendant, in axillary 

 long-stalked spikes, leaf-stalk short ; pastures, local. T. 

 ochroleucum^ L. ; flowers yellowish-white, calyx-teeth Ian- 



