H ab.—Growing in spreading patches a t the base of trees, on
walls or stones in exposed or shady places, perhaps commoner
tlnan is thought by being confounded with Loph. hidentata (L.).
5. Hart Hill, Hoare Park, Warwickshire, J. E Bagnall.
7. Bettws-y-Coed, Carnarvonshire, W. II. P. 8. Stirrup Wood,
Marple, Derbyshire, C. J. Wild. 10. Coneysthorpe Bank Wood,
Torks, M. B. Slater. Ash Hag Gill, Hackness, Yorks, M. B.
Slater. 12. Iiijebrick, Isle of Man, G. A. Holt.
Found on the Continent,
Obs.—Distinguished from Lophocolea hidentata (L.) by its
monoicous infloresoenoe, narrower leaves, which are more cuspidate;
from Lophocolea heterophylla (Sohrad.), which is also
monoicous, by its more spreading habit, its deeply bifid,
cuspidate leaves, which are never entire.
D escription o r P late C II.—Fig . 1. Plants natural size.
2. Portion of stem, antioal view x 16 (Hackness, M. B. Slater).
3. Portion of leaf x 290 (ditto). 4, 5. Stipules magnified (Isle
of Man, G. A. Holt). 6, 7. Bracts x 24 (ditto). 8. Bract x 16
(Hackness, M. B. Slater). 9. Sub-bracteole x 16 (ditto).
10. Bracteole x 16 (ditto). 11. Perianth x 11 (ditto).
12. Cross-section of perianth x 11 (ditto). 13. Portion of the
mouth of perianth x 16 (ditto). 14. Perigonial bract x 24
(Isle of Man, G. A. Holt). 15. Antheridium x 64 (ditto).
3. Lophocolea heterophylla (Schrad.), Bum.
Lichenastl'um p im iu lis ohtusiorihus hijidis minus, Dill. Hist. Muse. p. 488, t. 70,
f. 12 (1741).
Jungermania heterophylla, Schrad. Diar. Bot. p. 66 (1801) ; Hook. Brit. Ju n g ,
t. 31 (1816).
Lophocolea heterophylla, Dum. Recueil, p. 17 (1885).
Paroicous, cæspitose, small, pale green in colour. Stems procumbent,
ramose, branches postical, erect ; radiculose, rootlets
short, white, few, fasciculate, produced from the base of the
stipules. Leaves imbrioate, horizontal, slightly decurrent antioally,
plane or slightly concave, bifarious, spreading or secund,
ovate, quadrate, entire or obtusely emarginate, rarely acutely
bifid ; texture somewhat firm, cells medium size, 4-, 5- and G-
sided, walls thin, no trigones. Stipules oblong, bifid to below the
middle, segments subulate, outer margin unidentate, on young
branohes bifid only or minutely unidentate on one side. Sub-
braots (perigonial) oblong roundish quadrate, emarginate or entire,
lobulate or deeply unidentate at the base, one or two roundish
antheridia enclosed in the lobule. Sub-braoteole oblong, bifid or
trifid, segments subulate, acuminate. Bracts closely imbricate,
oblong quadrate, roundish, or oblong-qnadrate, entire or obtusely
emarginate, margin entire or furnished with one or two teeth,
lobulate or elobulate. Bracteoles oblong bifid to about the middle
segments subulate, margin sparsely laciniate-dentate. Perianth
terminal on main stem or branches, projecting about half beyond
the bracts, ovate, obtusely triangular, mouth wide, trilobate
dentate. Calyptra ovate, thin, delicate. Capsule ovate, dark
brown. Spores and elaters brown.
Pruits March, April, May.
D i m e n s i o n s .—Stems J to 1 inch long, '25 mm. diam., with
leaves 2' mm. wide ; leaves 1' mm. x '6 mra., 1'2 mm. x 1' mm.,
1’25 mm. x ’8 mm. ; cells '03 mm. x ’05 mm., ’03 mm. x ’035 mm.,
•04 mm. X '035 mm. ; stipule ’9 mm. x '3 mm., segments "55 mm.;
sub-bract 1’4 mm. x ’9 mm.; sub-braoteole IT mm. x '6 mm.,
segments '6 mm. ; bracts 1'4 mra. x 1' mm., 1'4 mm. x '8 mm.;
bracteole 1’2 mm. x '7 mm., segments '5 mm. ; perianth 2' mm.
X 1- mm.; antheridia ’15 mm. x '14 mm.
H a b .—Growing usually at the base of trees or on rotting
wood.
Common. 1-5, 7-14, 16. I.
Found on the Continent and in North America.
Obs.—Differs from Lophocolea bidentata (L.) by its being
paroicous; from L. cuspidata, Limpricht. by its usually smaller
size, its variously shaped leaves, entire, emarginate and bifid—
hence its name.
Growing with it are often very small young stems with leaves
deeply bifid, stipules bipartite with a small tooth on one side,