of the Tribe Trigonanthee. 23 
separated by a broadly lunate sinus, margin entire, sometimes bear- 
ing a lateral tooth on one or both sides; cells of bracts and bracteoles 
polygonal, walls slightly and uniformly thickened. 
Stems 0.18™™ in diameter ; leaves 0.75™™x0.25™™ at apex to 0.4™™ 
at base; underleaves 0.25™™x0.35™™" ; leaf-cells at apex 20ux18p, at 
middle 20p, at base 35ux25pu, at antical edge 12, underleaf-cells at 
middle 20uxl5pm, at base 12m; perianth 2.4™™x0.8™™"; innermost 9 
bracts 1.1™"x0.7™; cells at middle of bracts 754x254; ¢ bracts 
0.3™™ to 0.45™™x0.13™™ to 0.22; cells at middle of 4 bract 32ux24u. 
Hawaiian Islands (Herb. Sande-Lac., Baldwin). Oahu (Mann and 
Brigham) ; Nuuanu, Mt. Tantalus, Konahuanui (Cooke). Kauai : 
Kilohana, Molokoa (Cooke). 
Specimens of Mastigobrywm ligulatum from Herr Stephani agree 
perfectly with the type-specimens of IM. Brighami collected by 
Mann and Brigham. This species is very distinct from the other 
Hawaiian Bazzaniw. Perhaps B. inequabdilis is the most closely 
related. B. Brighami, however, is a much smaller plant, the leaves 
are smaller and the sides more parallel, the leaf-cells are smaller, 
with much thicker cell-walls. 
Of great interest in this species is the occurrence of antheridial 
spikes on the flagella. This tendency was found on several plants 
which came from the same log. It may be compared with the posi- 
tion of male spikes on the ventral branches of Aantia, since the 
flagella are modified postical branches. Leafy branches occur posti- 
cally on B. Brighami but no male spikes were found on them. 
That male spikes occur on flagella is mentioned by Lindenberg’ 
and by Pearson.2 In B. Brighami sometimes as many as three 
spikes were found on a single flagellum. 
Kantia S. F. Gray, 1821. 
Plants rather small to large, dark green to pale green, depressed- 
cespitose or scattered among other bryophytes: stems prostrate or 
assurgent at the sometimes gemmiparous apex, subsimple or rarely 
branching ; branches postical, blunt or attenuated ; rhizoids long, 
colorless, borne in clusters at the base of the underleaves: leaves 
closely imbricated to approximate, incubous, alternate, spreading 
narrowly ovate to suborbicular, entire, apex rounded or retuse, some- 
times cuspidate, bidentate or bilobed : leaf-cells large, mostly isodi- 
1G. L. & N., Syn. Hep., 214, 1845. 
*'The Hepatice of the British Isles, 129, 1900. The species here referred to 
is B. trilobata. 
