of the margin of leaf x 85. 9. Portion of leaf x 290. 10.
Bract X 16. 11. Perianth and bract x 11. 12. Perigonial
bract, e.xplanate x 24 (Littlebeck, Eskdale, M. B. Slater).
13. Scapania irrigua {Nees), Dum.
.Tung&i'mania irrigua, Nees, Nat. Eur. Leb. 1, p. 193 (1833).
Scapania irrigua, Dum. Eecueil, p. 16 (1835).
Dioicous; in spreading tufts or creeping loosely amongst
Sphayna, medium size, of a pale green or brownish colour. Stems
ascending or prostrate, lax, rooting up to the apex, simple or
slightly branched. Leaves horizontally inserted, distant or
approximate, lax, divided unequally to about the middle into two
lobes, entire, or the upper leaves sometimes distantly denticulate ;
antioal lobe about half the size of the postical, convex, snbquadrate
or sub-rotund, acute or sub-muoronate ; postical lobe subquadrate
to sub-rotund, acute or sub-mucronate; texture delicate, cells
smallish to moderate in size, roundish, angles slightly thickened,
Perianth obovate to oval, mouth dentate. Perigonial stems with
bracts subimbricate, ventricose at the base ; antheridia numerous,
sometimes 4 in each bract.
The plant is sometimes gemmiparous ; gemm® small, greenish,
at the margin of the upper leaves.
Fruits April, May.
D imensions.— Stems from-J-to 1 inch long, ’3 mm. diam., with
leaves 2' mm. to 3' mm. broad; leaves, antical lobe 1- mm.x
1'2 mm., '7 mm. x 1' mm., '6 mm. x '8 mm.; postical lobe 1'4 mm.
X 1-8 mm., 1- mm. x 1’3 mm.; cells '020 mm. x '03 mm., '025 mm.
X '025 mm. ; perianth 2' inm. long x 1-3 mm. broad, 1’6 mm.
X ’9 mm.
H a b ,— Growing in swampy places or on w'et banks. Somewhat
rare.
1. Marazion Marsh; Trungle Moor; Chyanhal; Tremethick
Moor, West Cornwall, W. Curnow (as Scapania uliginosa, Trans.
Penz. N. H. Soc. 1881-82). 2. New Forest, C. Lyell. Guestling
near Hastings, Rev. R. N. Rloomjiehl. 5. Shirley Heath,
Warwickshire, J. E. Bagnall. Gospel E n d ; Newborough ; Abbot’s
Bromley; Arley Wood; Swynnerton; Leek; Cloud, Staffordshire,
.T. E. Bagnall. 7, 8. Kinder Scout, Derbyshire, Holt &
Whitehead. 9. Morley Common ; Walton Swamp, W. Wilson.
Oakmere, G. A. Holt. 10. Strensal Common, Yorks, G. Stabler.
12. Foulshaw Moss, J. M. Barnes & G. Stabler. Staveley, Westmorland,
G. Stabter. Injebreck, Isle of Man, G. A. Holt. 13.
Barend Moss, Castle-Douglas, J. McAndrew. 15, 16. Moidart,
West Inverness, S. M. Macvicar.
I. Cromaglown; Benbulben, Co. Sligo; Loch Bray, Dr.
D. Moore.
Found on the Continent.
O bs.— This species, which appears to be more peculiar to low-
lying localities, is distinguished from S. undulata by its subquadrate,
acute leaf-lobes. A small form, growing in drier stations
than the normal form, may be confounded with S. curta, but it
maybe separated by its stouter habit and the more quadrate shape
of the leaf lobes.
Description oe P late XCII.—Fig. 1. Plants natural size.
2. Stem X 16 (G. & E. n. 507). 3. Portion of stem x 16
(Thed. Ex. n. 147, as .Tung, uliginosa). 4. Male stem x 24
(Cheshire, Wilson). 5. Stem x 16 (Essex). 6. Perigonial bract
with antheridia x 24 (Foulshaw Moss, Barnes). 7. Leaf x 16
(Husn., Hep. Gall. n. 102). 8. Perianth x 24 (G. & E. n. 319).
9. Mouth of perianth x 31 (Cheshire, Wilson). 10. Portion of
leaf x 290 (G. & E. n. 319).
14. Scapania uliginosa {Swartz)', Dum.
Jungermania uliginosa, Sw. in Lindenb. Syn. Hep. p. 59 (1829).
Radula uliginosa, Dum. Syll. Ju n g . p. 40 (1831).
Scapania idiginosa, Dum. Recueil, p. 14 (1835); Nees in G. L. N. Syn. Hep.
p. 67 (1844).
Plagiochila uliginosa, M. & N. in Nees, Hep. Eur. I l l , p. 522 (1838).
Dioicous ; in loose tufts or often floating in boggy places,
large, brown to reddish olive green in colour, when dry dark