20 O, M. Cooke, Jr.—The Hawaiian Hepatice 
Hawaiian Islands (Hillebrand). East Maui (Baldwin). 
Bazzania minuta is more closely related to B. Baldwinii than to 
any other Hawaiian Bazzania. They are easily distinguished by 
the difference in size of the plants and by the form and size of the 
leaves and underleaves. 
Bazzania patens (Mont.) Trevis. 
Herpetium patens Mont., Ann. des Sc. Nat., II, xix, 295, 1843. Voyage de la 
Bonite, Botanique, i, 242; atlas, pl. CXLIX, fig. 2, 1846. 
Mastigobryum patens G. L. & N., Syn. Hep., 221, 1845. Lindenb. & Gottsche, 
Spec. Hep., vii, 48, tab. VIII, figs. 1-4, 1851. 
Mastigobryum parvistipulum Aust., Bull. Torr. Bot. Club, v, 16, 1874. 
Bazzania patens Trevis., Mem. reale Ist. Lomb. di Sci. e Lett., III, iv, 414, 
1877. 
Bazzania Beecheyana Steph., Hedwigia, xxxii, 204, 1893. 
Puate VI; Ficures 1-10. 
Plants depressed, loosely czespitose, green: stems prostrate, 
falsely dichotomous; flagella short, blunt; rhizoids borne in 
clusters at the base of underleaves, long, colorless: leaves slightly 
imbricated, subfalcate, truncate, tri-(rarely quadri-)dentate, teeth 
broadly triangular, 2 or 3 cells long, acute ; sinuses separating teeth 
broadly lunate: underleaves slightly broader than the stem, sub- 
quadrate, apex irregularly 4 to 6 dentate, teeth triangular, often 
divided, 2 or 3 cells broad, 3 to 5 cells long, lateral margins often 
dentate: leaf-cells at apex large, walls slightly thickened, tri- 
gones small, at middle of base very large, oblong-polygonal, walls 
slightly thickened, trigones small ; cells of the underleaves oblong, 
smaller than those of leaves, with thinner walls and smaller trigones. 
Stem 0.4™™ in diameter; leaves 1.95™™"x0.85™™ ; underleaves 0.4™™ 
x0.5™™"; leaf-cells at apex 40ux30p, at middle of base 52ux40y, anti- 
cal edge near base 22; cells of underleaves 43ux32y. 
Hawaiian Islands (Gaudichaud, Andersson). East Maui (Baldwin). 
Oahu (Beechey, Mann and Brigham) ; Nuuanu (Cooke). Kauai: 
Kilohana (Cooke). 
B. patens is close to Mastigobrywm Cubense Gottsche.’ It 
differs however in the following points: B. patens is a larger plant, 
the leaves being nearly twice as large, the cell-walls are thinner and 
the trigones are smaller and are not confluent, the cells at the base 
are larger and their trigones are smaller and are not confluent, the 
underleaves are smaller and have thinner cell-walls and smaller 
trigones. 
1S$tephani, Hedwigia, xxiv, 249, pl. III, fig. 1, 1885. 
