CEPHALOZIA MINIMA Aust.; Pearson, List Can. Hep. 1 I. pl. 6.
1890.
Gametophyte a minute dark green, usually simple leafy axis ; leaves about the width of the stem, obovate or subquadrate, bifid one-third their length, with acute divisions, the margins entire ; leaf cells 4-6-sided, about r6 It in diameter ; underleaves present, the lower entire and subulate, the upper larger and bifid : dioicous; perianth acrocarpus, oblong-oval, with rather wide sub-entire mouth ; involucral leaves 3 pairs, larger than the ordinary stem leaves, subquadrate, bifid one-third to one-half their length, spinu lose-dentate ; antheridia on short branches. Sporophyte not seen.
On rotten logs, Belleville, Ontario (Macoun); known only from the type specimen.