SUMMER KEY TO THE SPECIES OF CATALPA 
a. Leaves 5-8 inches long, thick; flowers 1%4 inches across, 
prominently yellow-spotted; seeds with pointed, fringed 
wings at each end; branches rather crooked and straggling; 
bark thin, separating into thin scales on the trunk.......... 
shelton iardana recite Syaitwlabotaie waves a a rsa aaah C. bignontoides, p. 227. 
aa. Leaves 8-12 inches long, thin; flowers 2% inches across, 
not prominently spotted; seeds with rounded, wide-fringed 
wings at each end; branches not crooked and straggling; 
bark thick, separating into thick scales on the trunk........ 
Bid scacs BS tae tisk aoa a SENATOR ONCE C. speciosa, p. 225. 
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