Description
A microscope slide with a longitudinal section of a female strobilus from Pinus showing central axis, ovuliferous scales, and bracts. Specimen collected during second summer before fertilization. Quadruple stain.
A microscope slide with a longitudinal section of a female strobilus from Pinus showing central axis, ovuliferous scales, and bracts. Specimen collected during second summer before fertilization. Quadruple stain.