600 Evans: REPORT ON THE HEPATICAE OF ALASKA 
is a little longer than the postical, the leaf thus being slightly 
unsymmetrical. In well-developed leaves the antical edge is 
about 0.3 mm. long, the postical about 0.2 mm. and the breadth 
at the base of the leaf about 0.4 mm. The leaves are normally 
quadrifid to below the middle with subulate acute lobes, ending ina 
single cell or in a row of two or three cells, and usually separated 
by acute sinuses. The underleaves are similar but smaller, being 
only 0.25 mm. in width. . The leaf-cells measure about 30X22 yu 
in the middle of the leaf and have thickened walls with indistinct 
trigones. The cuticle is smooth throughout. 
The specimens from Augustine Bay show male inflorescences 
and indicate that the species is probably dioicous. The androecia 
occupy very short postical branches growing in the axils of the 
underleaves on the main stem. They are not abundant, the 
highest number observed on an individual stem being five. The 
concave bracts are crowded and borne in from two to four pairs, 
each bract enclosing one or two antheridia in its axil. No case of 
proliferation was observed, a condition apparently’ associated 
with the delicacy of the entire inflorescence. The individual 
bracts are subject to considerable variation in size and complexity. 
One of the best developed was 0.45 mm. long and 0.6 mm. wide. 
It was four-lobed to about the middle, the divisions and sinuses 
being acute. The margins of the divisions, although mostly 
entire, showed an occasional small tooth formed by a projecting 
cell. Other bracts showed only three lobes and sometimes the 
marginal denticulation was more pronounced. A well-developed 
bracteole measured 0.15 mm. in length and 0.25 mm. in width, and 
was likewise quadrifid to about the middle with acute entire lobes 
and sinuses, each lobe being two or three cells long and two cells 
wide at the base. The cells of both bracts and bracteoles are 
characterized by thin walls with vague indications of trigones 
toward the apices of the lobes. In the bracts the cells measure 
about 30X24 4. The antheridia are about 0.15 mm. in diameter. 
There is no danger whatever of confusing L. sandvicensis with 
any of the other species of Lepidozia now known from the Pacific 
Coast region of North America. In both L. reptans and L. fila- 
mentosa, which occur in the present collection, the leaves are much 
larger and are often imbricated, so that the shoots bear no re- 
