Observations of reaction fibers in leaves of dicotyledons

HALLE, OLDEMAN, AND TOMLINSON (1978) have discussed the transference of function between compound leaves and plagiotropic branches in the context of tree architecture. In trees conforming to Cook's model (see Halle, Oldeman, & Tomlinson, 1978), plagiotropic branches resemble compound leaves in their determinate growth and their periodic abscission. Conversely, certain trees (primarily in the Meliaceae) have compound leaves that behave like plagiotropic branches.