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Monoicous. Densely imbricated, forming vvide
compressed tufts. Stems i)¿ to 2
inches long, creeping, variously
branched, branches again pinnate,
and innovant, with a few pellucid
radicles proceeding from the leaves.
Leaves closely imbricated, in a bifarious
manner (fig.
36), concealing the
j j . - s t em, u n e q u a l l y
two-lobed ; superior
lo b e m u c h th e
largest, orbicular,
nearly flat ; inferior
lo b c o v a t e , a d -
37. pressed, flat, often
radiculose(fig. 37). Colour, pale yellow green. Peri-
chætial leaves differing little from the cauline ones,
except in the two lobes being more equal. Stipules
none. C a ly x oblong, from a cylindrical base, becoming
wider, compressed, flat at the ap ex and
truncate, nearly entire, or only cleft on one side.
Capsule ovate, pale brown, furrowed. Eilaters
bispiral.
Radula voluta, Tajf.
Stem procumbent, pinnately branched ;
leaves auriculate behind, densely imbricate,
orbicular, entire, complicate at the base ;
auricle large, rounded-cordate, excised at the
base, and rather embracing the stem.
Radii/a voluta, T a y lo r in S yn. Hep. 255 ;
Cooke ^ Hep. f. 13 9 ; Carr, in Trans . Bot.
Soc. Ed. VIE, 4 5 5 ; Carr, and Pears. Exs.
No. 44. Radula xalapensis, Lind. Hep. Hib.,
p, 491.
On boulders.
Dioicous. Stem procumbent, pinnately branched,
rather rigid, the upper branches subfasciculate!
Leaves rather imbricate, roundish,
obtuse, entire, complicate at the
base and subdecurrent, lobule large,
rounded - cordate, mostly obtuse,
transversely protracted above the
stem, excised and rather embracing
at the base, plane or rather undulate
(%• 38).
The male spikes consist of three to
four pairs of perigonial leaves, each
enclosing two anthers, they are at first seated near
the apex of small lateral shoots, but by the growth
of the terminal bud, appear at length basal. Carr.
Radula aquilegia, Tayl.
Stems casspitose, subpinnate, dep re s s ed ;
leaves rather erect, convex, entire, rounded
obovate, margin recurved ; perichaetial leaves
deflexed ; perianth elongated, obconic.
Jtmgermanuia aquilegia, T a y l . Trans . Bot.
Soc. Edin. IE, 117. Radula aquilegia, Tayl.
in Syn. Hep. p. 260 ; Gott. and Rabh, Exs.
No. 207 ; Co o ke Hep. f. 139, 140; Carr,
and Pears. Exs. No. 43.
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