In response to the question about red snow, the usual culprit is
Chlamydomonas nivalis, thoough C. sanguinea is also found. The pigment is
astaxanthin, a carotenoid. There is also green snow, caused by C.
balleniana and C. yellowstonensis. This information all came from the
Chlamydomonas Sourcebook by Lib Harris, ISBN 0-12-326880-X
Mike Adams
Mike Adams
Biology Dept, ECSU
Willimantic, CT 06226
(203) 465-5305
