Leaves horizontal or patent-divergent, spreading or complánate,
the insertion of the upper part of leaf is in a line with the side of
the stem, whilst the base is deourrent, and brought forward by a
gradual symmetrical curve, ovate orbiculate, emarginate to about
I f f , sinus small and shallow, lunate, segments acute or obtusate,
upper segment sometimes larger and overhanging the other
like a claw ; texture lax, cells medium size, 4-, 5- and 6-sided,
mostly hexagonal, often longer than broad, in the upper portion
of leaf snbquadrate, basal cells oblong, walls thin, trigones small,
sometimes indistinct. Stipules large, prominent, ovate-lanoeolate
or lanceolate-acute, varying much in shape, inserted obliquely so
as to turn from the leaf opposite to which they arise, entire or
unidentate, rarely dentate on both sides. Cladocarpous, perianth
proceeding from the postical side of stem, from axil of stipule, on
a very short branch which bears only a few small bracts and
bracteoles ; cylindrical, slightly sickle-shaped, smooth, composed
of several layers of cells at the base, near the mouth of a single
layer, triplicate, mouth contracted, finely crenulate. Bracts small,
oval or snbquadrate, bifid or trifid. Bracteole oval or ovate-
lanceolate, entire or bifid. Calyptra oval, composed of several
layers near the base. Pistillidia few, oylindrioal. Capsule oval,
brown. Spores smooth, brown, small. Elaters bispiral. Androecia
on small catkin-like branches proceeding from the postical side of
distinct stems, from the axil of stipule ; perigonial bracts 4 pairs,
small, complicate, ventricose, enclosing 1-3 oval, stipitate antheridia
; perigonial bracteoles bifid.
Emits May, June.
D imensions.—Stems J to 2 inches long, diam. ’25 mm. to
•3 mm., with leaves 175 mm. to 2'5 mm. wide; leaves 2' mm.
X 1’4 mm., 2' mm. x 1' mm., 1’5 mm. x L5 mm., 1'5 mm. x 1’3
mm., 1'5 mm. x 1' mm., 1'2 mm. x l '2 mm., 1' mm. x 1' mm.,
1- mm. X -8 mm., 9 mm. x -6 mm., 1’3 mm. x 1'2 rom., cells '0775
mm. X -025 mm., '075 mm. x '025 mm., '06 mm. x '03 mm., '05
mm. x '027 mm., 05 mm. x '03 mm., '04 mm. x '03 mm., '03 mm.
x '03 mm. ; stipules '65 mm. x ’225 mm., '65 mm. x '2 mm.,
•6 mm.x '2 mm., '55 mm. x '225 mm., '5 mm. x '2 mm., '475
mm. X'15 mm., '75 ram. x '3 mm.; perianth 3' mm. x 1' mm.,
2'4 mm. x '7 mm.
H ab.—Growing in alpine regions on wet rocks or in swampy
places amongst mosses.
15. Loch-na-Gar, Aberdeen, George Stabler, 1884; Ben Lawers,
Bev. II. G. Jameson, Sept. 1893. 18c. Burra Firth, Uist, Shetland,
John Sim, 1878.
Found on the Continent and in North America.
Obs.—This very rare British species, which is only found in
alpine regions, cannot he mistaken for any other if seen with its
laterally inserted perianth ; when barren it is easily distinguished
from any of the forms of Jung, bantriensis, Hook., by its claw-
like segments of the leaf and the large obliquely projecting
stipules.
Harpanthus scutatus (W. & M.), found on lower elevations, is
a smaller plant of different colour, shape and texture of leaves,
which see.
D escription of P late CVIII.—Fig. 1. Plants natural size.
2. Portion of stem, antioal view x 16 (G. & E. 379). 3. Stem,
postical view x 16 (Uist, Sim). 4. Leaf x 16 (ditto). 5. Portion
of leaf X 290 (G. & E. 379). 6, 7. Stipules x 46 (Uist, Sim).
8, 9, 10. Bracts x 17 (Dr. Gottsche, G. & R. 379). 11. Perianth
with portion of stem x 17 (ditto). 12. Longitudinal section of
perianth x 17 (ditto).
Genus 26. MYLIA, Gr. fl B.
xia, Hook. Brit. Jung. p. 15, t. 34, 57 (1816).
Mylia, Gr. & B. Nat. Arr. Brit. PI. p. 693 (1821).
Leptoscyphus, Mitten, Hook. Lond. Journ. of Bot. I l l , p. 358 (1851).
Coleochila, Dum. Hep. Eu r. p. 105 (1874).
Dioicous. Stems simple or innovant below the apex, erect or
creeping, tomentose beneath. Leaves suooubous, bifariously
imbricated, alternate, semi-vertical, either circular or ovate, and
acute. Stipules subulate obscured by the rootlets except at the
apex of the shoots. Perianth terminal (or from the growth of
innovations axillary) ovato-oblong, laterally compressed from a