n LEGUMINOS.'E IGl 



instance, the common Red Clover (2! pi-atense) has 

 the strongly veined connate stipules (Fig. 105) ovate, 

 the free part short, tri- 

 angular, and ending in a 

 setaceous, applied point. 

 The upper ones are some- 

 what dilated. In White 

 Clover {T. rejjens, Fig. 106) 

 they are all comparatively 

 narrow, and subulate at the 

 free end. This difference 



may perhaps be accounted Fi°- 105.— Tri/olimn 2Jratense. Head 

 c ^ ii \- nc 1 of flower-buds with tlie pair of pro- 



lor by the ditierent arrange- tectiug leaves. 

 meut of the flower-bud. In 



T. pratense the head is sessile (Fig. 105), and the bud is 

 protected by the broad stipules. Hence, also, perhaps 

 the upper ones are more dilated than the others, as they 

 have to cover the young flower-head. In 1\ repens, on 

 the contrary, the peduncle elongates (Fig. 106), while 

 the flower-head is still very undeveloped, indeed scarcely 

 broader than long, and without any projecting corollas. 

 The young flower-head pushes out from the plant and 

 lies flat on the ground, selecting a suitable situation 

 for its development. The figure shows a bud in an 

 early state, the corollas quite uncoloured and enclosed 

 by the calyces, but already with a long peduncle, 

 carrying it far beyond the stipule, st. T. medium 

 also has stipules, much narrower than those of T. 

 pratense} 



T. repens (White Clover). — According to Darwin, 

 the flowers of White Clover are self-sterile. The wing 

 and keel are at one point grown together. The claw of 

 the wing is very narrow, which greatly facilitates the 

 pumping action. The upper surfaces of the leaflets are 

 glabrous. The cells of the epidermis are thin -walled ; 

 they are raised in the middle, and in the depressions 

 are small openings. At the edge of the leaf is a fringe 

 of long hairs. The under side of the leaves, except near 



1 Avebury (Lubbock), On Buds and Stipules. 



M 



