bo 
bo 
C. M. Cooke, Jr.—The Hawaiian Hepatice 
Bazzania Brighami (Aust.) Evans. 
Mastigobryum Brighami Aust., Bull. Torr. Bot. Club, v, 16, 1874. 
Mastigobryum ligulatum Sande-Lac.; Steph., Hedwigia, xxv, 202, pl. I, figs. 
13, 14, 1886. 
Bazzania Brighami Evans, Trans. Conn, Acad., viii, 255, 1892. 
Prats VII. 
Plants loosely czespitose, green or yellow-brown: stems slender, 
creeping or ascending, branching frequently and dichotomously; 
branches blunt, rarely attenuated or flagelliform; leafy branches 
sometimes arising postically from the axils of underleaves ; stems 
about 8 cells in diameter, all the cells of about the same size, walls 
much thickened, cortical cells in about 20 longitudinal rows, their 
walls pigmented ; flagella numerous, slender, sometimes branching; 
rhizoids borne in clusters at the base of underleaves: leaves approxi- 
mate or slightly imbricated, nearly opposite, spreading, subfalcate, 
ligulate to broadly ovate, antical base slightly dilated, arching half- 
way over stem, apex truncate, tridentate, teeth broadly triangular, 
acute to apiculate, sometimes rounded, 1 to 3 cells long ; sinuses 
separating teeth broadly lunate: underleaves distant or approximate, 
much wider than the stem, usually connate with the leaf on one side, 
sometimes connate on both sides, subquadrate to broadly ovate, apex 
truncate, irregularly quadridentate, teeth triangular acute or apicu- 
late, often bifid: leaf-cells at the apex with much thickened cell- 
walls, cavities small, subquadrate, at middle near base subvittate, the 
cells oblong, thick-walled, trigones small; cells of underleaves oblong, 
walls slightly thickened, the base of the underleaf showing one or 
two rows of very small cells with uniformly much thickened walls 
and irregularly oblong-quadrate cavities: @ inflorescence borne on a 
short branch; bracts in 3 to 5 pairs; innermost bracts broadly ovate, 
the upper part of margin irregularly dentate or denticulate, deeply 
bifid to quadrifid, lobes subulate, irregularly denticulate at the base; 
innermost bracteole similar to bracts, usually less deeply lobed; cells 
oblong, with slightly thickened walls; bracts of second row ovate, 
bifid: perianth fusiform, terete below, irregularly keeled above, 
mouth lobed, lobes ciliate, cilia 4 to 6 cells long, 1 or 2 cells broad, 
apical cell minutely verruculose: g spikes borne in the axils of under- 
leaves, sometimes on flagella, often curved ;" bracts in 5 to 10 pairs, 
concave, broadly ovate, apex bidentate or bidenticulate, teeth trian- 
gular, apiculate, sometimes acute, apical tooth minutely verruculose, 
lateral margins entire or sometimes bearing | or 2 teeth ; bracteoles 
ovate or subquadrate, apex truncate or rounded, bidenticulate, teeth 
