Title
Physiology-Soils PM Negatives 130-133
Creator
Date
1945
Format
Description
Transverse sections of central portions of fully developed and active leaves of two Bromeliaceous species to show chloroplasts at different times of day.
#130, #132 and #133 -- Ananas comosus -- #130, in afternoon, chloroplasts filled with starch grains; #132, at noon, starch grains just starting to form; and #133, in morning.
#131 -- Tillandsia usneoides -- chloroplasts filled with starch grains.
Photographed by B. Krauss, May 28 and 29, 1945.
#130, #132 and #133 -- Ananas comosus -- #130, in afternoon, chloroplasts filled with starch grains; #132, at noon, starch grains just starting to form; and #133, in morning.
#131 -- Tillandsia usneoides -- chloroplasts filled with starch grains.
Photographed by B. Krauss, May 28 and 29, 1945.