MORPHOLOGY OF THE LEAF. 



99 



ing of the base lobes of a deeply cordate leaf, as seen in hydro 

 cotyle. It may be orbicular, oval, etc. 



Fkather-veined leaves aJmnxt compound. Stf, Nigella (pirmatisect). 344, rheledonium majus. 345, This- 

 tle (Cirsium lanceolatum). 346, Dandelion (runcinate-lyrate). 



296. The following result from deficiency of tissue, causing 

 deep divisions between the veins. Leaves thus dissected are 

 said to be palmately-lobed when either the segments or the si- 



348 



Pulin.ate-vtln.ed leaves. 347, Menispermum Canadense. 348, Passiflora cerulea. 349, Broussonetia pa- 

 pyrifera. 350, Oak Geranium. 



mises are somewhat rounded and continuous. The number of 

 lobes is denoted by such terms as bilobate, trilobate, five-lobed, 

 etc. Leaves are palmatety cleft and palmately parted, according 



