apheliotropic

Adjective

 * 1) Turning away from the sun; said of leaves, etc.
 * 2) * 1880, Charles Darwin, The power of movement in plants (London: John Murray, p. 450-451) online:
 * But some tendrils are apheliotropic, for instance those of and of ; and the stems of some plants which climb by rootlets, as those of the Ivy and Tecoma radicans, are likewise apheliotropic, and they thus find a support.