Physiology-Soils PM Negatives 068-070

Title

Physiology-Soils PM Negatives 068-070

Creator

Date

1941

Format

Description

#68, Leaf of 13-months-old seedling out parallel to surface to show transverse branches of leaf bundles in early stage of development.

#69, portion of mature leaf, retted, to show transverse branches of leaf bundles in mature state -- surface view.

#70, detail from material shown in #69.

Photographed by B. Krauss, May 4, 1941.