166 



ORGANOGRAPHY. 



320), as in the Black Bryony ( Tamus communis) ; or, if of the 

 same shape, but Avith the apex broader than the base, and 

 hollowed out into two round lobes, it is ohcordate or inversely 

 heart-shaped {fig. 327) ; Avhen a leaf resembles a cordate one 

 generally in shape, but with its apex rounded, and the whole 



Fig. 328. 



Fig. 331. 



Fig. 332 



Fig. 333. 



Fig. 328. Lunate or crescent-sliaped leaf. Fig. 329. Sagittate leaf. 



Fig.'SW. Hastate leaf. /Vf/. ;i;il. A portion of the stem of Woody 



Nightslittde (Solnnnm Dulaimcnn), bearing flowering stalk and an anricu- 



late leiif. Fig. XiU. A subrotiind or rounded leaf, with entire margin. 



Fig. ',iii3. Orbicular peltate leaf. 



