of the Tribe Trigonanthee. 19 
corners rounded, trigones small, triangular, at base larger, thin- 
walled, corners rounded or slightly indented, trigones small, tri- 
angular, at margin similar to those at apex; cells of underleaf 
similar to those of leaf: ¢ spike occupying a short postical branch, 
dark brown; bracts in 5 to 10 pairs, closely appressed, concave, 
suborbicular, apex usually bidentate, teeth small, triangular ; brac- 
teole ovate, bidentate, teeth similar to those of bracts ; antheridia 
borne singly, oval. 
Stems 0.25™™ in diameter; leaves 0.9™™ long 0.2™" wide at the 
apex, 0.5™" at the base; underleaves 0.4"™™"x0.35™, leaf-cells at apex 
20p, at base 38ux30p, at antical edge 13uxl7u; ¢ bracts 0.57™x0.5™™; 
bracteoles 0.5™™x0.4™™, 
East Maui: Haleakeala (Baldwin). West Maui (Baldwin). 
This species is closely related to B. triangularis (Schleich.) 
Lindb. (= B. deflexa), of Europe, North America and Asia, For 
comparison specimens from G. & R., Hep. Eur., No. 634, have been 
used. The leaves of B. Baldwinii are much less concave, narrower 
and frequently bidentate, the leaf-cells have thinner walls and 
smaller trigones, the cells at the base are somewhat larger, the 
underleaves are more oblong. ; 
Bazzania minuta (Aust.) Evans. 
Mastigobryum minutum Aust., Bull. Torr. Bot. Club, v, 17, 1874. 
Bazzania minuta Evans, Trans. Conn, Acad., viii, 255, 1892. 
PuaTE V; FiGcuRES 1-13. 
Plants loosely czspitose, yellowish green: stems slender, spar- 
ingly branched ; leafy branches lateral, sometimes postical from the 
axil of an underleaf; flagella scattered, very slender: leaves 
approximate or distant, spreading, lanceolate-ovate, apex bidenticu- 
late, sometimes acute or apiculate, antical base curved, arching 
partly over the stem, postical base not decurrent : underleaves dis- 
tant, a little broader than the stem, base subcordate, apex obtuse 
or truncate, bidentate, retuse or erose-dentate, lateral margin 
sometimes unidentate : leaf-cells at apex thin-walled, cavities with 
irregular outline, trigones small, at base larger, but agreeing in other 
points with those of apex, at margin similar to those at apex ; cells 
of underleaves smaller than those of leaves and with smaller tri-. 
gones. 
Stems 0.15™™ in diameter ; leaves 0.6™"x0.4™™ ; underleaves 0.15™™ 
x0.12™" ; leaf-cells at apex 23ux21p, at base 34ux28p, at antical edge 
17; cells of underleaves 22ux17p. 
