4 C. M. Cooke, Jr.—The Hawuiian Hepatice 
Stems sparingly branched, postical flagella exogenous ; leaves trans- 
versely inserted, undivided; underleaves similar to leaves but slightly 
smaller. Acromastigum. 
Stems pinnate or falsely dichotomous, postical flagella endogenous ; 
leaves subfaleate, usually tridentate at the apex, rarely entire, biden- 
tate or quadridentate ; underleaves smaller than leaves. Bazzania. 
Lepidozia Dumort., 1835. 
Plants rather large or rarely small, pale or yellow-green, rarely 
bright green, densely czespitose, in depressed, rarely erect or pendu- 
lous mats: stems usually strong, plumose, pinnately or bipinnately 
branched; leafy branches as a rule lateral, more or less curved down- 
wards, sometimes attenuated and rooting at the apex ; in small species, 
chiefly, postical branches present, which are normally leafy or fre- 
quently reduced to radicelliferous flagella : leaves incubous, small or 
minute, often broader than long, obliquely or transversely inserted, 
the antical margin longer and more rounded than the postical, 
decurved-convex or fornicate, usually 4-lobed or parted, rarely 2-, 
3-, 5- or 6-lobed, lobes subulate, either entire or bearing at the antical 
base a few teeth, sometimes the whole margin dentate : cells small 
or minute, quadrate-hexagonal or oblong-quadrate, elongated at the 
base of the leaves, scarcely thickened at the corners : underleaves 
similar to leaves but smaller: dioicous or monoicous: 9 inflorescence 
borne on a short postical branch from the main stem, rarely from a 
branch ; bracts in 3 to 5 rows, appressed, concave, much larger 
than the stem-leaves, apex 2- to 4-lobed, margin denticulate to 
spinose ; archegonia 20 or less, the sterile persisting at or near the 
base of the calyptra; perianth elongated, ovoid to narrowly 
fusiform, obtusely trigonous above, fleshy or unistratose, mouth 
entire, denticulate or ciliate-laciniate ; calyptra one-half to one- 
quarter as long, pyriform or oblong, fleshy at the base: capsule 
oblong-cylindrical, 4-valved to the base, cells of outer layer fur- 
nished with parietal columns, innermost layer with semiannular 
thickenings; elaters slender, bispiral ; spores minute, smooth or ver- 
ruculose : andreecium usually occupying a small postical branch, 
rarely terminal on a lateral branch ; bracts in 5 to 10 pairs, suborbic- 
ular, concave, apex bidentate; bracteoles about half as large as 
bracts : antheridia borne singly. 
Leaves obliquely inserted, 0,.45™™x0.35"™. L. australis. 
Leaves transversely inserted, less than 0.45™™x0.35™™. . 
Plants large ; leaves 0.3""x0.4™™, closely appressed to stem. 
L. Sandvicensis. 
Plants small; leaves 0.13™"x0.05"™, slightly spreading. L. Hawaica. 
