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Apheliotropic, a-fē-li-o-trop′ik, adj. turning away from the sun.

Both tracings showed that the apheliotropic movement was a modified form of circumnutation.

Apheliotropic movements are comparatively rare in a well-marked degree, excepting with sub-aërial roots.

Dahlia, circumnutation of young leaves, 244-246 Dalea alopecuroides, leaflets depressed at night, 354 Darkness, effect of, on the movement of leaves, 407 Darlingtonia Californica, its leaves or pitchers apheliotropic, 450, n.

It appears, therefore, that light does not determine the growth of apheliotropic parts in any uniform manner.