r - r :
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X 1' mm., seg. 75 mm. ; bracteole 1'25 mm. x 1' mm., seg.
'6 mm.; periantb 2' mm. x 7o mm., 2'5 mm. x '85 mm., 3’5 mm.
X 1' mm., 1'8 mm.-2'2 mm. x '5 mm.; teeth at mouth '05 mm.,
'075 mm.,T mm.; pistillidia '15 mm. x '04 mm.; perigonial bracts
•75 mm. x '5 mm., seg. '4 mm., '6 mm. x '6 mm., seg. '25 mm.;
antheridia '125 mm. x '1 mm.
H ab.—Growing on damp stones, rooks, and earth, or amongst
mosses in wet and shady places; rarer on rotting wood. Common.
1 to 17. I.
Pound on the Continent and in North America.
Obs.—One of our commonest hepatics, varying extremely in
size, colour and habit.
Distinguished from C. connivens (D.), which is also monoicous,
by the presence of flagella; position, shape and texture of the
leaves, and perianth not furnished with long cilia.
C. cunifolia (Dicks.), which is also monoicous, has no flagella;
the leaves are remarkably concave, with long, incurved, hamate,
cuspidate segments, and usually of a beautiful purple colour.
Description op P late LV II.—Fig. 1. Plants natural size.
2. Portion of stem X 31 (Pass of Llanberis, G. A. Holt). 3. Ditto
x 31 (Penzance, W. Curnow). 4. Leaf x 24 (Kinder Scout,
Whitehead & Holt). 5, 6. Leaves x 24 (Tyn-y-Groes,W. H. P.).
7. Portion of leaf x 290 (ditto). 8, 9. Bracts x 24 (Pass of
Llanberis, G. A. Holt). 10. Bracteole x 24 (ditto). 11. Sub-
braot X 24 (ditto). 12. Bract x 24 (Kinder Scout, Whitehead
& Holt). 13. Perianth x 16 (Festiniog, W. H. P.) 14. Crosssection
of perianth X 16 (ditto). 15. Portion of the mouth of
perianth x 85 (ditto). 16, 17. Perigonial bracts x 24 (ditto).
18. Antheridium x 85 (ditto).
153
5. Cephalozia Lammersiana (Hüben.), Spruce.
Jungermania Lammersiana, HUbener Hep. Germ. p. 165 (1884).
•Twngmnania bicuspidata y uliginosa, Nees Eur. Leberm. ii. 253 and {ex parte)
y y obliquaia, Nees 1, c. 254.
.Jungermania bicxtspidata, Eng. Bot. t. 2239.
Cephalozia lamnKrsiana (Hüben.), Spruce, On Ceph., p. 43 (1882).
Dioicous, laxly cæspitose, flagella none or very rare, medium
to largish in size, pale green to pale dull brown in colour. Stems
simple or with one or two short postical branohes ; slender,
delicate; cortical cells large, about 10, inner 4, 5 diam. smaller;
radiculose, rootlets few, white, delicate. Leaves distant or approximate,
alternate, spreading, horizontal or patent-divergent, oval or
oblong-oval, bilobed to below the middle, segments connivent or
spreading, large, unequal, lanceolate, acuminate ; texture lax, cells
medium to rather large in size, quadrate or ohlong-quadrate, walls
delicate, no thickened angles or trigones. Stipules present on the
male plant only, shorter than the leaves, subulate or ovate-lanoeolate,
mostly entire, rarely bidentate at the apex. Fertile branches
elongate ; bracts oblong-ovate-aoute, bilobed to below the middle,
segments lanceolate-subulate ; entire or with a small tooth below
the middle on one side ; bracteole broadly ovate, coarsely unidentate
on both sides ; sub-bracts ovate-lanceolate, only slightly bifid,
segments acuminate ; 3rd sub-bract small, ovate, bilobed to about
the middle. Perianth much exserted, large, linear-cylindrical,
obtusely trigonous, composed of a single layer of cells down to the
very base, about 70 cells round near the middle, mouth constricted,
denticulate, teeth 1 or 2 cells long. Calyptra oval, delicate.
Capsule reddish-brown. Spores reddish-brown ; elaters same
colour, hispiral, hardly as broad as the spores. Androeoia on
short or long postical branches; perigonial bracts closely imbricate,
assurgent, broadly ovate, swollen at the base, bilobed to
about the middle, segments acute ; perigonial bracteoles (see
stipules). Antheridia single, oval.
D imensions.—Stems 1 to 2 inches long, '125 mm. in diameter,
with leaves '75 mm. to 1- mm. wide ; leaves '4 mm. x '25 mm.,