bractlet


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bractlet

[′brak·lət]
(botany)
References in periodicals archive ?
This aptation appears to have evolved twice [ILLUSTRATION FOR FIGURE 6 OMITTED] and originated by activation in the sepal tissue of the biosynthetic machinery involved in secretion of reward resin by the staminate bractlets.
The origin of four defense characteristics in Dalecharnpia was by exaptive evolution and three apparently by simple adaptation (counting the initial resin secretion by staminate bractlets as an adaptation).
Chemical surveys of Dalechampia species have shown that some of the major constituents of the reward resin are also found in the pistillate sepals and the protective floral bractlets of primitive Dalechampia that are not pollinated by resin-collecting bees (Armbruster, Clausen, and Loquvam unpubl.