Grindelia oaxacana is a rare North American species of flowering plants in the family Asteraceae. It is native to southwestern Mexico, found only in the State of Oaxaca.Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae). Phytologia 68(4): 316 distribution map on page 316
Grindelia oaxacana is an herb tall or sometimes taller, with stems covered with glandular hairs. Leaves are oblong or egg-shaped, up to 5 cm long even high on the stem, thus larger than the leaves of related species. The plant produces only one flower head per stem, the head about across. Each head has 16-22 ray flowers surrounding numerous disc flowers.Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 470-471 diagnosis in Latin, description and commentary in EnglishNesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae). Phytologia 68(4): 323-324 description and commentary in English
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