Rick collecting acid-tolerant Zygogonium in Yellowstone National
Park (with permission from NPS).
This filamentous alga was found in an acid pool (pH 3), near the hot
spring plume in the background.
Interview on WHYY Radio on Charophyte Research
Transeau Slide Collection of Zygnemataceae
Find out about Rick's research on Lewis and Clark.
Visit the Academy of Natural Sciences where Rick works.
Background image: Micrasterias radiata, copyright R. M. McCourt
2001.