of the Tribe Trigonanthee. 7 
Lepidozia Sandvicensis Lindenb. 
Lepidozia Sandvicensis Lindenb.; G. L. & N., Syn. Hep., 201, 1845. Lindenb. 
& Gottsche, Sp. Hep., vi, 12, pl. I, figs. 1-5, 1846. 
Lepidozia filipendula Tayl., Lond, Journ. Bot., v, 369, 1846. 
Mastigophora Sandvicensis Trevis., Mem. reale Ist. Lomb. di Sci. e Lett., III, 
iv, 415, 1877. 
Mastigophora filipendula Trevis., 1. c., 416. 
PuatE II; Figures 1-12. 
Plants loosely czespitose, pale green: stems pale green becoming 
brown with age, pinnately branched, branches often bi- to tri-pinna- 
tifid, flagelliform, main stem about 20 cells in diameter, cortical 
cells in about 60 longitudinal rows, internal cells hexagonal in cross- ° 
section, with uniformly thickened colorless cell-walls, cortical cells 
subquadrate, walls of about the same thickness as those of the 
internal cells, outer wall much pigmented ; rhizoids wanting : leaves 
distant, almost transversely inserted, closely appressed to stem, 
slightly convex, subquadrate, slightly unsymmetrical, the antical 
edge longer than the postical, 12 to 18 cells wide at base, quadrifid 
(rarely bifid) more than one-half ; lobes subulate, 4 to 6 cells broad, 
6 to 10 cells long, ending in a single cell or a row of 2 or 3 cells, 
sinuses separating lobes acute, rarely obtuse: underleaves similar to 
leaves, but smaller, 8 to 10 cells broad at base ; lobes usually 2 cells 
broad, 4 to 6 cells long; leaves of branches much smaller than stem- 
leaves, subquadrate, 6 to 8 cells broad at base, usually trifid, rarely 
quadrifid, lobed below the middle ; lobes subulate, 1 or 2 cells broad 
at base, 2 to 4 cells long ; underleaves of branches similar to branch- 
leaves, more often quadrifid : leaf-cells subquadrate, cell-walls uni- 
formly thickened, cell-cavities with corners slightly rounded : leaves 
subtending branches ovate, deeply bifid about one-half; lobes trian- 
gular-subulate, acute, parallel or spreading: inflorescence unknown. 
Stems 0.5™™ in diameter ; cortical cells 304 long, 27m broad, 21m 
thick ; leaves of main-stem antical length 0.3™™, postical length 
0.2™™x0.4™™ (breadth at base); underleaves 0.22™™"x0.25™™; leaf-cells 
at edge of leaf 29ux25p, at middle 35ux25p. 
Hawaiian Islands (Tolmie). West Maui (Baldwin). 
Lepidozia commutata Steph.,' of the West Indies, is very close to 
the Hawaiian species. The comparison has been made with speci- 
mens from the island of Guadaloupe (G. & R., Hep. Eur., No. 565). 
The two plants differ in their branching, the Hawaiian species having 
the branches pinnately or bipinnately branched, while in the West 
1 Hedwigia, xxvii, 293, 1888. 
