LEAVES 



39 



small rosettes upon the 

 ground (Fig. 38), In one 

 form the blade is round, 

 and the margin is beset 

 by prominent bristle-like 

 hairs, each with a globu- 

 lar gland at its tip (Fig. 

 39). Shorter gland-bear- 

 ing hairs are scattered also 

 ever the inner surface of 

 the blade. All these glands 

 excrete a clear, sticky fluid, 

 which hangs to them like 

 dewdrops, and which, not _, 

 being dissipated by sun- 

 light, has suggested the 

 name sundew. If a small 

 insect becomes entangled in 



FIG. 38. Sundews. After KERNER. 



FIG. 39. Two leaves of a sundew: A, glandular hairs fully extended; B, half 

 the hairs bending inward, in the position assumed when an insect has been 

 captured. After KERNER. 

 4 



