Petal from a Pink Flower Found on the North Side of the Caltech Campus

Filament and Petal of a White Flower Common to the Caltech Campus

Surface Texture of a Leaf from a Common Plant found around the Caltech Undergraduate Houses

Mass of Pollen Extracted from closed Pink Flowers on the North Side of the Caltech Campus

Purple Hairy Follicles on the Stem of a Bush found on the North Side of the Caltech Campus

Hairs Extracted from the Pistils of Common Purple Flowers on the Caltech Campus

Several Individual Pollen Grains of the species Hemerocallis fulva, obtained and observed at the Caltech Broad Center for the Biological Sciences

Water from Caltech Turtle Pond