Problem of Xeromorphy in Marsh Plants . 
841 
Text-fig. ii. To illustrate localization of withering in leaves exposed to wind, &c. Withered 
portions, black with white veins ; uninjured parts, white with black veins. A, Plantago lanceolata ; 
b, Quercus Robur ; c and d, Fagus sylvatica ; e, Crataegus Oxyacantha ; F, Populus sp. ; G, Rosa 
sp. ; H and J, Polygonum cuspidatum. J is a section through an unfolding leaf : the black parts 
here are not yet withered, though they may wither later, a-h, x :§ ; J, x 4 %, 
