of the pith with reticulated markings.
(Drawn with the 1/8-in. objective and the "A" eye-piece.)
This image is from Coptis in the Drugs and Medicines of North America.

of the pith with reticulated markings.
(Drawn with the 1/8-in. objective and the "A" eye-piece.)
This image is from Coptis in the Drugs and Medicines of North America.