Fig. 013. Pollen of Pine.
A grain seen in profile; another seen from the front side.
This image is from Lycopodium in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.
A grain seen in profile; another seen from the front side.
This image is from Lycopodium in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.