(372) 
family, those changes which mark the appearance of specific 
and generic characters are soon apparent. The same charac- 
ter may appear later in the ontogeny of the organs in one 
Lz . 
K, hagcnine. J, apex with two lateral floral rudiments ; A, section ot 
young ovary. L, MM, Cucumis ; be apex with young dower MM, longitu- 
dinal section of young ovary. to S, Citrullus; N, apex; O, P, R, S, 
longitudinal sections of young Pas showing origin of organs 
genus than in another, as for example in the filling of the 
locules of the ovary by placental tissue. This occurs at an 
early stage in most of the Cucurbitaceae, even before the 
formation of the spore-mother-cell. In Fevz/lea the ovules 
