38 C. M. Cooke, Jr.—The Hawaiian Hepaticee 
Stems 0.08™™ in diameter; leaves 0.18™"x0.15™™ to 0.3"™x0.28™™; 
cells of stem 16 in diameter ; leaf-cells at margin 19yx16p, at base 
24ux18u 3 innermost bracts 0.357"x0.3™", bracteole 0.357"x0.15™™ ; 
perianth 0.95™™x0.4™™" ; ¢ bracts 0.25™"x0.2™™; spores 9; elaters 
about 160px9p. 
Kauai: Kilohana (Cooke), growing on the ground. 
This species resembles C. ewiliflora (Tayl.) Trevis. at first sight 
but differs in a large number of important characters. The Hawaiian 
species is autoicous while the New Zealand species is dioicous, the 
leaves of the former are larger, and more imbricated near the apex, 
the walls of the leaf-cells are slightly thicker, the ¢ and 9 organs 
are not acrogenous but are borne on postical branches, and lastly the 
perichetial bracts are not denticulate. 
Cephalozia heteroica sp. noy. 
PLATE XV. 
Heteroicous: plants green, loosely czespitose : stems subsimple 
or branching from the postical aspect, prostrate at the base, apex 
ascending, circular in section, about 6 cells in diamete7v, internal and 
cortical cells similar, with slightly thickened walls, the latter in about 
15 longitudinal rows ; rhizoids colorless, scattered on the ventral 
surface: leaves distant, transversely inserted, squarrose, somewhat 
concave, subquadrate, bifid more than one-half, lobes spreading, 
ovate, acute, entire, separated by an obtuse sinus, about 7 cells long, 
4 or 5 cells broad : leaf-cells with uniformly thickened walls, cell-cayi- 
ties sometimes rounded, trigones minute or lacking: underleaves 
very small, about 4 cells broad at base, variable in form, lanceolate- 
ovate to broadly quadrate, apices acute, obtuse or bifid, with unequal, 
acuminate to obtuse, spreading to connivent lobes; cells of the under- 
leaves small, with uniformly thickened walls: @ inflorescence usually 
borne on the main stem, with a sterile or floriferous mnovation, 
sometimes on ashort postical branch; bracts in 2 or 3 pairs; innermost 
bracts broadly ovate to broadly quadrate, bifid (one-fourth to one- 
third), lobes triangular, acute, denticulate ; innermost bracteole sub- 
orbicular, connate on both sides, bifid, lobes triangular, acute, 
denticulate ; bracts of second row broadly ovate, bifid (about one- 
third), lobes triangular-ovate, acute, spreading, slightly denticulate ; 
bracteole of second row connate on both sides, ovate, bifid (about 
one-third), sometimes quadrified, lobes ovate, acute, slightly denticu- 
late: perianth broadly fusiform, terete below, bluntly three-keeled 
