Perhaps one of the most commonly encountered species of native Selaginella species in western North America, Selaginella wallacei has a very extensive range of occurrence. With such a range there appears to be a comparable variation in the gross appearance of the species from Selaginella bigelovii type of erect plants to prostrate Selaginella densa type of plants. Yet the basic characteristics which set this unique species apart hold true irregardless of its particular growth habit.
To illustrate this variation I am including journals on the species that occurs in Washington state, in addition to a California form common in Napa County.
Characteristics noted on the California form, click link below
http://i152.photobucket.com/albums/s...eiCANapap2.jpg
The Washington state form over view, click link below
http://i152.photobucket.com/albums/s...llaceiWAp1.jpg
Characteristics noted on the Washington form, click link below
http://i152.photobucket.com/albums/s...llaceiWAp2.jpg