National Geographic : 1926 Apr
© National Geographic Society Painting from life by William Crowder BEAUTIFUL DIDERMA TESTACEUM IS FOUND THROUGHOUT THE UNITED STATES Most of the specimens of this slime mold in our Western States are found on dead oak leaves; inthe East, they not infrequently gather on moss. When fresh this Diderma is easily recognized by its delicate pink color. Olderspecimens become white. Enlarged 40 diameters.