n 1 a  cap  :  a large genus of coarse gummy or resinous composite herbs chiefly of western No. America and So. America that have flower heads with involucres consisting of phyllaries with spreading tips  b  :  a plant of the genus Grindelia  2  :  the dried leaves and stems of various plants of the genus Grindelia (as G. camporum, G. robusta, and G. squarrosa) sometimes used internally as a remedy in bronchitis and asthma and applied externally to relieve poison ivy
 
Grin•del, David Hieronymous (1776-1836), German botanist. The genus Grindelia was named in his honor in 1807 by the German botanist Karl Ludwig Willdenow (1765-1812).
 
   
 
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