Here is a close-up of the pollen from one of the small purple flowers that are dispersed around Avery Courtyard. The sample was obtained in Avery Courtyard Tuesday afternoon at 3:30 PM. The pollen was taken from the stamen of the flower, rubbed onto the glass slide, taped on, and covered with a coverslip. The pollen seems to be all clumped together but are also grainy and relatively small. #caltechbi1