filaments and sulphur

Description:

Hydrogenobacter acidophilus (high-dro-jen-owe-back-ter ass-sid-off-ill-us) is found at some of the hottest regions, often above 60 degrees C. In nature, it takes the forms of filaments which collect together and are visible with the named eye as white wispy threads. The whiteness in part is due to the inclusion of crystallized sulphur, seen here with associated filaments. In culture tends to form curving rods. Phase contrast. Material from Nymph Creek and Nymph Lake, thermal sites within Yellowstone National Park, photograph by Kathy Sheehan and David Patterson.