THE DICOTYLEDONS 541 
venation from pinnate to palmate, so leaf shape from ovate to 
pinnatifid to pinnatipartite to sub-palmatifid to palmatipartite to 
compound palmate. Inflorescence either a dichasial or scorpioid 
cyme. Flowers regular, pentamerous (Geranium) to irregular 
pentamerous (Pelargonium); sepals five, aposepalous; petals five, 
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Fic. 409.—Physostigma venenosum—Portion of plant and fruit. (Sayre.) 
apopetalous, varying in color from greenish-white or pink-red to 
scarlet, scarlet-crimson to crimson-purple; stamens with anthers 
ten or five, hypogynous or inserted into slightly developed 
hypogynous disk; pistil pentacarpellary, ovary five-celled with 
two, rarely one ovule in each cell, styles elongate, fused round a 
stylar column of receptacle then continued as a stylar tip which 
splits into five stigmatic surfaces. Fruit a regma, rarely a simple 
capsule. Regma splits into five recurved carpels, each then 
dehiscing to set free two or one seeds. Seeds exalbuminous. 
