One form (near Festiniog, Br. C. and IF. H. P., and Killarney,
S. 0. L.) is larger, more regularly pinnate, of a softer texture
with the bracts hardly so laciniate as the usual form, but I have
observed no other charaoters to separate it from the type.
Dr. Spruce found on Strensal Moor a stout and often fertile
form which has leaves mostly 4-cleft, although in laxer forms of
the species, leaves with more than 3 divisions are rare.
The perfect fruit of this species is very rare.
D escription oe P late XLVI.—Fig. 1. Plants natural size
Portion of stem, antical view x 24 (Killarney, S. 0. Lindberg)
3. Ditto, postical view x 85, showing stipules (ditto). 4, 5
Leaves x 85 (ditto). 6, 7. Leaves x 85 (Barton Moss, Lane.
W. H. P.). 8. Leaf x 85 (Aust. Hep. Am. Bor. n. 76). 9, 10.
Branch leaves x 85 (Killarney, S. 0. L.). 11. Branch leaf x 85
(Barton Moss, W. H. P.). 12. Portion of leaf x 290 (ditto).
13, 14. Bracts x 64 (White Mts., N. America, Oates). 15.
Bracteole x 64 (ditto). 16. Sub-braot x 64 (ditto). 17. Sub-
braoteole X 64 (ditto). 18. Perianth x 31 (ditto). 19. Portion
of the mouth of the perianth x 85 (Tyn-y-Groes, N. Wales,
W. H. P.). 20. Capsule and calyptra x 31 (White Mts.,
Oakes). 21 Perigonial bract x 85 (Aust. Hep. Am. bor., n. 76).
22, 23. Ditto X 64 (Sussex, G. Davies). 24. Perigonial bracteole
X 64 (ditto). 25. Antheridium x 85 (ditto).
Genus 12. BAZZANIA, Gr. ^ P.
.Jungermania, Linn. Fl. Suec. ed. 1, p. 335 (1745).
Jiazzania, Gr. it Benn. Nat. Arr. Brit. Pi. I, p. 704 (1821).
Pleuroschisma, sect. Pleuroschismotypus, Dum. Syll. Jung., p. 70 (1831).
Plewroschisma, Dum. Keoueil, p. 1!) (183.5).
Jlerpetium, Nees, Nat. Hist. Eur. Leberm., I l l , p. 214 (1838).
Mastigohryum, G.L.N. Syn. Hep. p. 214 (1845).
Stems firm, almost round, slightly compressed frontally,
repeatedly furcate, dichotomous. Branches postical, very short
and floriferous, or often elongate, microphyllous and radiculose.
Cells of the stem several layers, cortical similar to the inner ones,
opaque. Leaves incubous, alternate, in a few species opposite, at
the base more or less imbricate, apex more or less distant, decurved.
sometimes (principally when dry) secund, always oblique, sometimes
falcate, about twice as long as broad, at the base seraioor-
dato-ovate, gradually becoming narrower, the upper half subligu-
late, apex plane, almost always trunoato-tridentate, rarely 4-dentate
or subentire—in a few species equally bidentate, or unequally
bilobed; margin in most species entire, in a few species postical
base spinose or dentate. Cells near the base elongate, others
small, subquadrate, guttulate, usually smooth, walls and angles
distinctly thickened. Stipules everywhere present, about half the
size of the leaves, rarely 3-4 times shorter, broader than the stem,
appressed, very often subrotundo-quadrate, rarely longer, apex
truncate, very often 4-crenate or incised, rarely subentire, margin
entii-e or subdentate; in a few species cordate at the base, auricles
sometimes spinose. Flagella unequally leaved; leaves minute,
tristichous, ovate, concave, apex bidentuhite, rarely only apiculato
or tridenticulate, producing from near the base long pale radicles.
Inflorescence dioicous, both sexes cladogenous, constantly on
postical branches. Bracts j 3- 5-pairs, innermost largest (but
often shorter than the leaves), closely imbricate, concave, orbicu-
late or ovate, rarely ovato-lanceolate, apex lobulate, laciniate or
ciliate, subscariose ; cells rather large, elongate, 4- 6-angled.
Pistillidia 10-16. Perianth ovato-subulate or fusiform. 3 to 4
times longer than broad, suhcarnose at the base, leptodermous, at
first trioarinate at the base, keels broad, quasi 6-plioate, on the
maturing of the fruit the keels almost obliterated,O •’ sometimes subterete,
with only the apex trigonous constricted, mouth in perfect
state with 12-15 long cilia. Calyptra about half the size of the
perianth, pyriform or oylindrioal-ohlong, at the base 3-strata,
surrounded by the sterile pistillidia, above 2-strata. Capsule
about half the size of the calyptra, oblong, suboylindrical, about
5-strata, dividing to the base into 4 valves. Elaters slender, sub-
obtuse, about half the breadth of the minute spores. Amentula 8
antical, proceeding from the axil of the stipule, short, incurved :
bracts 5, rarely up to 10-pairs, ovate, concave or subcoinplicato-
convolute, apex truncate, bifid, or bispinose, rarely entire;
antheridia two longistipitate, rarely solitary.