592 
Gametophyte an exceedingly minute mostly simple, fleshy 
stem, often less than a millimeter long; leaves imbricate, ovate- 
orbicular, usually narrower than the stem, bifid with an acutish 
sinus; underleaves lanceolate-ovate, entire, often apparent only 
near the ends of the stems; perianth terminal on ascending stems, 
0.5 mm. or less long, oval or somewhat obovate, plicate and trun- 
cate at the mouth. Sporophyte an oval capsule ona seta scarcely 
longer than the perianth. 
Among mosses on rotten wood, New Jersey and Ohio (fide 
Austin); also Belleville, Ontario (Macoun). Not often collected 
but likely to be overlooked by collectors on account of its almost 
microscopic size. It was distributed by Sullivant: Musc. Alleg. 
239 (as Jungermannia divaricata); this number forms the type; it 
was also distributed by Austin: Hep. Bor. Am. 50. | 
13. CEPHALOZIA MINIMA Aust.; Pearson, List Can. Hep. 11. f/. 6. 
1890. 
Gametophyte a minute dark grecn, 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 16 p 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. 
14. CEPHALOzIA Turner! (Hook.) Lindb. Acta Soc. Sci. Fenn. 
#0: §O2. *875. 
Jungermannia Turneri Hook. Brit. Jung. p/. 29. 1816. 
Gametophyte a prostrate slightly branched leafy stem, 2-5 
mm. long; leaves approximate, equitant, complicate-bifid half-way 
to the base, the margin everywhere sharply and unequally serrate- 
dentate; underleaves wanting: dioicous or monoicous ; perianth 
whitish, 0.3-0.5 mm. long, pentagonal-prismatic, the mouth almost 
closed, obscurely ciliolate ; involucral leaves larger than the ordi- 
nary stem-leaves, spinose-dentate, bifid with acute divisions. Spo- 
rophyte and oval capsule on a slender seta; spores dark browf, 
about 8 yw in diameter; elaters dark brown, about 200 p long, with 
two close spirals. 
This species was first announced by Mr. M. A. Howe from 2 
