32 C. M. Cooke, Jr.—The Hawaiian Hepatice 
plicate, margins never reflexed, entire or denticulate : underleaves 
much smaller than leaves, in some species partly or wholly lacking: 
dioicous, autoicous or paroicous: @ inflorescence usually borne on 
a short branch, rarely terminal on a vegetative branch, sometimes 
variable in position in the same species; bracts in about 3 rows, 
bilobed (rarely trilobed or quadrilobed), often connate, yet free 
from the perianth ; bracteoles always present: archegonia about 20, 
rarely fewer: perianth elongated, usually trigonous, rarely 5- or 
6-keeled, mouth variously laciniate to denticulate, rarely entire ; 
calyptra free, surrounded at the base by the sterile archegonia: cap- 
sule more or less oblong, walls 2 cells thick, cells of the inner layer 
furnished with semiannular thickenings; elaters long, bispiral; spores 
minute, about the diameter of the elaters, smooth or verruculose : 
andrecium amentiform, usually occupying a short postical branch, or 
intercalary on a main branch ; bracts in several pairs, bifid, monan- 
drous. 
Stems weak, postically branched ; cortical cells larger than interior; leaves 
more or less obliquely inserted ; bracts not connate or only slightly so. 
Plants rather large; leaves approximate or slightly imbricated ; mouth of 
perianth laciniate ; autoicous. C. Sandvicensis. 
Plants minute ; leaves distant ; mouth of perianth ciliate ; paroicous. 
C. Baldwinit, 
Stems rigid, sometimes laterally branched ; cortical cells similar to interior ; 
leaves transversely inserted ; bracts connate. 
Innovations lacking; leaf-cells with much thickened walls; 9 inflorescence 
cladogenous ; innermost bracteole not bifid. C. Kilohanensis. 
Innovations present; leaf-cells with slightly thickened cell-walls ; inflo- 
rescence acrogenous or cladogenous ; innermost bracteole bifid. 
Underleaves lacking ; leaf-cells at margin 12ux10y. C. Lile. 
Underleaves present ; leaf-cells at margin 20ux15y. C. heteroica. 
Subgenus Eucephalozia Spruce, 1882. 
Plants variable in size, green, rarely yellow, sometimes reddish: 
stems mostly weak or fragile, rarely rigid, simple or sparingly branch- 
ing; branches more or less postical, sometimes flagelliform: leaves 
obliquely inserted, often somewhat broader than long, concave or 
subeomplicate, margin entire, apex bifid: cells as a rule large, pel- 
lucid, quadrate-hexagonal or quadrate, smooth : underleaves, when 
present, entire or bifid: monoicous or dioicous: @ inflorescence in 
some species constantly cladogenous or acrogenous, in others varia- 
ble in position ; bracts rather large, 2- to 4-lobed, entire or often 
dentate, spinulose or incised; bracteoles always present ; perianth 
