Grindelia. 1883. Grindelia robusta.

Gallery: 
AJP 1880-1889
Grindelia
ajp1883-grindelia.

Grindelia robusta; transverse section through upper surface of leaf, 250 diam.
Scaly trichoma, a from above, b section, 400 diam.

This image is from Gleanings in Materia Medica in the American Journal of Pharmacy, 1883.