TLDR
Nature of tendrils—Bignoniaceæ, various species of, and their different modes of climbing—Tendrils which avoid the light and creep into crevices—Development of adhesive discs—Excellent adaptations for seizing different kinds of supports.—Polemoniaceæ—Cobæa scandens much branched and hooked tendrils, their manner of action—Leguminosæ—Compositæ—Smilaceæ—Smilax aspera, its inefficient tendrils—Fumariaceæ—Corydalis claviculata, its state intermediate between that of a leaf-climber and a tendril-bearer.via the TL;DR App
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Written by charlesdarwin | On the Origin of Species By Means of Natural Selection