132 HEPATIOÆ.
3. Bazzania tric re n a ta (JValilenherg).
Jungeimania trim'enata, Wahlenb. Fl. Carp. p. 364, n. 1207 (1814).
Dioicous, densely or loosely cæspitose, flagelliferous, largish to
large in size, brownish-green to dark brown in colour. Stems
erect or procumbent, slightly branched, branches erect ; cortical
cells about 40, similar to the inner cells, only with firmer walls,
15 to 18 cells in diameter; somewhat brittle when dry, flagella
abundant, microphyllous, proceeding from the axil of the stipules;
radiculose, rootlets few, fasciculate, hyaline. Leaves approximate
or subimbricate. alternate, horizontal, strongly deflexed, when dry
involute, semi-oordate-ovate or semi-ovate-oblong, falcate, arcuate
at the antical margin, bi-tridentate at the narrow apex; cells
medium size, roundish-quadrate, walls firm, angles thickened or
with trigones distinct. Stipules twice as broad as the stem,
roundish-quadrate or suborbicular, usually broader than long,
margin irregularly crenate or dentate, sometimes emarginate.
Inflorescence ? cladocarpous, arising from the axil of stipule;
sub-bracts and sub-braoteole ovate, bifid; innermost bracts
ovate, quadrifid. Perianth lanceolate, cylindrical, plicate at the
apex,’mouth small, denticulate. Pistillidia long, about 7.
Capsule not seen.
Dimensions.—Stems about 2 inches long, diameter '2 mm.,
with leaves 1’25 mm. wide; leaves '75 mm. x '45 mm. at apex
T75 mm. wide, 1'4 mm. x '9 mm. at apex, '25 mm., 1 3 mm.
x-8 mm. at apex, '3 mm., IT mm. x '7 mm. at apex, '2 mm.,
■9 mm. x 65 mm. at apex, '25 mm. ; cells '04 mm. x '03 mm.,
•035 mm. x-03 mm., '03 mm. x '025 mm.; stipule A mm.
x-5 mm., -3 mm. x ’5 mm., '35 mm. x '85 mm.; sub-bracts
•55 mm. x -45 mm., -5 mm. x A mm., -6 mm. x -5 mm. ; sub-
braoteole A mm. X -3 mm.; innermost bracts -5 mm. x -4 mni.
segments, -25 mm., -6 mm. x A mm. segments -3 mm. ; pistillidia
•2 mm. X -05 mm.
H ab. Growing in large tufts on exposed or shaded banks in
subalpine localities.
7, 10, 12, 13, 15-17. I.
133
Pound on the Continent and in North America.
O b s .—Differs from B. trilobata (L.) in its smaller size,
brownish colour (not pale or dark green), more deflexed, and
when dry, involute leaves, which are shorter and narrower, with
narrower apices, teeth longer and more acute.
Prom B. triangularis (Sohleioher) and B. Pearsoni (Steph.) ; see
notes under each species.
D escription oe P late XLIX.—Pig. 1. Plants natural size.
2. Portion of stem, antioal view x 24 (C. & P. Hep. Brit. Ex.
n. 266). 3, 4. Leaves x 81 (ditto). 5, 6. Ditto x 31 (C. & P.
n. 122). 7, 8. Ditto x 31 (C. & P. n. 123). 9. Portion of leaf
X 290 (Eosthwaite, Cumberland, Carrington & Pearson). 10.
Stipule x 31 (C. & P. n. 122). 11, 12. Ditto x 31 (C. & P.
n. 123). 13. Stipule x 31 (C. & P. n. 266). 14-16. Sub-bracts
X 24 (Killarney, Stewart & Holt). 17. Sub-braoteole x 24
(ditto). 18, 19. Innermost bracts x 24 (ditto). 20. Perianth
x ? (from Lindenb. Spec. Hep.). 21. Pistillidium x 85
(Killarney, Stewart & Holt).
4. Bazzania Pearsoni
a Pearsoni, Stephani, “ H edwigia ” (1893).
Dioicous, loosely cæspitose, flagelliferous, largish, ochraceous.
Stems erect or procumbent, simple or with one, rarely two short
branches, flexuose, filiform, uncinate at the apex, on a cross-section
cortical cells about 25, with thick walls, inner more delicate, 8-10
cells in diam. ; flagella few, microphyllous ; radiculose, rootlets
few, hyaline, fasciculate, delicate. Leaves distant, alternate, much
deflexed when dry, somewhat fragile, reniform, with large overlapping
base, apex acute or truncate, entire or irregularly bi-
tridentate ; cells small, roundish-quadrate or elongate, guttulate,
walls thick, angles very much thickened, no trigones. Stipules
patulous, convex, slightly decurrent, obovate, ovate or orbicular,
entire or retuse. Inflorescence Î cladocarpous, arising from axil
of the stipules. Sub-bracts small, few (4), ovate, bifid; bracteole
obovate, entire. Innermost bracts ovate, bi-tridentate, margin