12 OC. M. Cooke, Jr.—The Hawaiian Hepatice 
Underleaves ovate to orbicular. 
Apex of leaves rounded or subtruncate. B. Nuuanuensis. 
Apex of leaves tridentate or bidentate. 
Leaf-cells at apex thick-walled, with or without small trigones. 
B. Sandvicensis. 
Leaf-cells at apex thin-walled, trigones large. 
Leaves broadly ovate ; plants robust, branching frequently. 
Leaves tridentate, 1.4™x1.1™™; leaf-cells at margin 15 in diameter. 
B. cordistipula. 
Leaves tridentate or bidentate, 0.85"™x0.6™™; leaf-cells at margin 
25 in diameter. B. Didericiana. 
Leaves lanceolate, always bidentate; plants slender, seldom branch- 
ing. B. emarginata. 
Underleaves subquadrate or quadrate. 
Leaves lanceolate to ovate ; underleaves not connate with the leaves. 
Leaves obliquely truncate, 0.9"™x0.5™™, B. Baldwinii. 
Leaves acute or bidenticulate, 0.6™™x0.4™™. B. minuta. 
Leaves ligulate ; underleaves sometimes connate with the leaves on one side. 
Leaves large, 1.95"™x0.85™™ ; leaf-cells at apex about 40ux80u, with walls 
slightly thickened. B. patens. 
Leaves 1.0™™x5™™ ; leaf-cells at apex about 30vx20y, with walls slightly 
thickened. B. inceequabilis. 
Leaves small, 0.75"™x0.4; leaf-cells at apex 20 in diameter, with much 
thickened cell-walls. B. Brighami. 
Bazzania cordistipula (Mont.) Trevis. 
Herpetium cordistipulum Mont., Ann. des Se. Nat., II, xix, 252, 1843. 
Voyage de la Bonite, Botanique, i, 242; atlas, pl. CXLIX, fig. 1, 1846. 
Mastigobryum cordistipulum G. L. & N., Syn. Hep., 224, 1845. Lindenb. & 
Gottsche, Spec. Hep., vii, 65, pl. XI, figs. 1-5, 1851. 
Bazzania cordistipula Trevis., Mem. reale Ist. Lomb. di Sci. e Lett., II, iv, 
414, 1877. 
Bazzania faleata Evans, Trans. Conn. Acad., viii, 255, 1892 (nut Bazzania 
falcata (Lindenb.) Trevis.). 
Puate IIL; riaures 1-14. 
Plants yellowish brown or green, densely czespitose: stems robust, 
falsely dichotomous, branches rarely attenuated or flagelliform; fila- 
gella postical, numerous, long-attenuate, microphyllous: leaves closely 
imbricated, alternate, subfalcate, spreading, obliquely ovate, the 
antical margin much more rounded than the postical, obliquely trun- 
cate, unequally tridentate; teeth broadly triangular to subulate, acute, 
acuminate or apiculate, antical tooth usually the longest, 5 to 13 cells 
long 4 to 7 cells broad, postical tooth 3 to 7 cells long 3 to 4 cells 
broad; sinuses obtuse to lunate; antical base arching over stem; posti- 
