Grindelia oaxacana explained

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.^[1]

Grindelia oaxacana is an herb 40cm (20inches) 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 18- across. Each head has 16-22 ray flowers surrounding numerous disc flowers.^{[2] [3]}

Notes and References

1. https://www.biodiversitylibrary.org/page/13062647#page/80/mode/1up Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae). Phytologia 68(4): 316
2. https://www.biodiversitylibrary.org/page/15994753#page/482/mode/1up Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 470-471
3. https://www.biodiversitylibrary.org/page/13062647#page/86/mode/1up Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae). Phytologia 68(4): 323-324