D escription op P l a t e XXXIX.—Fig. 1-3. Plants natural
size. 4. Portion of stem x ?. 5, 6. Leaves and stipules x 24
(Husnot Hep. Gall n. 45). 7. Leaf x 24 (Greenland, E. Brown).
8. Portion of leaf x 290 (Norway, S. 0. Lindberg). 9, 10. Bracts
X 14 (Balmoral, G. Stabler). 11. Bracteole x 24 (ditto). 12.
Perianth x IG (ditto). 13. Cross-section of perianth x 16
(ditto). 14. Cilia from mouth of the perianth x 85 (ditto).
15. Perigonial bract x 24 (Newfoundland, Waghorne). 16. Antheridium
X 85 (ditto).
Genus 11. TRICHOCOLEA {Dim.), Nees.
Thricolm, Dum. Comm. Bot. p. 113 (1822).
Tricholea, Dum. Syll. Jung. Bur. t. 1. f. 8 (1881).
Trichocolea (Dum.), Nees Nat. Bur. Leberm. I l l , p. 98 et 101 (1838).
Dioicous. Stems glaucous-green, conspicuous, pinnate compound
or decompound. Leaves laciniate almost to their base,
setaceo-multifid, succubous. Stipules multipartite. Involucre
terminal, or from the growth of innovations axillary. Perianth
when mature either free, naked and not incrassate, surrounded
only at the base or a little beyond by the abortive pistillidia and
the narrow ring of involucral scales. Cr undergoing more complete
metamorphosis, in which the cortical layer of the tomentose
receptacle invests and becomes blended with it, so as to form a
cylindrical coriaceous hirsute involucre bearing at the apex the
abortive pistillidia. Calyptra wanting. Capsule oblong, cleft to
the base into 4 coriaceous valves. Pedicel bulbous at the base,
inserted deep within the receptacle. Elaters free, bispiral. Antheridia
large, axillary in the terminal leaves of separate stems.
Trichocolea tomentella (Tilirhl), Bum.
Liehenastrum Jhlicinwn pulehrum villosum, Dill. Hist. muse. t. 73, f. 35 (1741).
Jungermania tomentella, Ehrh. Beitr. 2, p. 150 (1785); Hook. Brit. Jung. t. 36
(1816).
Trieholea tomentella, Dum. Com. p. 118 (1822).
Trichocolea (Dum.) Nees Nat. Bur. Leberm. iii. p. 108 (1888).
Dioicous, loosely cæspitose, large, of a white or yellowish-
green colour. Stems roundish, firm, pale yellowish-green, oomposed
of narrow, elongate cells, about 12 to 16 in diameter, cortical
cells 60 to 70, slightly smaller and firmer tlian the inner, surface
clothed with delicate linked branched leafy processes, which
resemble the last divisions of the leaves ; prostrate or suberect,
flexuose, furcate, hi-tripinnate, branches lateral, alternate, somewhat
distant, ultimate pinnæ very delicate ; rootlets wanting, or
very few near the base of the stem, pellucid, short, simple. Leaves
on main stem somewhat distant, horizontal, imbricate on the
branches and crowded into little heads at the ends of the stem
and branches, about 3 times wider than the stem, conduplicate,
unequally bipartite, antical lobe larger, plane or slightly convex,
appressed to the stem, divided almost to its base into two lanceolate
segments, which are again divided and subdivided into
numerous hair-like processes, which are either straight, curved, or
zigzag, and at the apices extremely delicate ; postical lobe divided
in a similar manner ; cells medium to rather large in size, oblong-
quadrate at the base of the leaf, on the segments oblong-cylindrical,
3 to 4 times longer than broad, walls delicate, no trigones.
Stipules large, about as wide as the stem or slightly wider, and
about half the size of the leaves, subquadrate or roundish, narrower
at the base, divided nearly to the base into 3 or 4 linear-lanceolate,
laciniate segments, laciniæ hair-like, straight, curved, or zig-zag.
Bracts wanting or minute, finely divided, scale-like processes at
the base of the perianth. Perianth terminal in the axils of the
primary divisions of the stem, oblong-obovate, oylindrioal, carnose,
composed of about 6 layers of cells near the base, at one part
where it is welded 12 to 15 cells thick, cells narrow, elongate,
epidermis hirsute, covered with capillary, branched processes ;
before rupture apex covered with about 10 abortive pistillidia
mixed with the hair-like processes, mouth wide, irregularly
lacerate, segments 5, smooth, cilia projecting over, hut produced
from the surface of the perianth. Calyptra wanting. Pedicel
thick, cortical layer composed of about 140 small dark-walled
cells, about 20 cells in diameter, inner larger, increasing in size to
the middle. Capsule oval, dark reddish-brown; outer layer
slightly papillose, hyaline, thin ; inner layers (several) dark reddish