umbraculiform

Um*brac`u*li*form, a. Etym: [L. umbraculum any thing that furnishes shade, a bower, umbrella (dim. of umbra a shade) + -form.] Defn: Having the form of anything that serves to shade, as a tree top, an umbrella, and the like; specifically (Bot.), having the form of an umbrella; umbrella-shaped.

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