Chandonanthus setiformis [Ekr/i.), Mitten.
Jungermania setiformis, Ehrh. Beit., 3, p. 80 (1787-92).
Anthelia setiformis, Dum, Recueil, p. 18 (1835).
Chandonanthus setiformis, Mitt. in Hook. f. Handb. New Zeal. Fl. 11, p. 750
(18G7).
Blepharostoma setiforme, Lindb. Muso. Asiai bor. p. 28 (1888).
Dioicous, cæspitose, medium to largish in size, of a yellowish-
brown colour. Stems simple or slightly irregularly furcate,
flexuose, filiform, rigid and somewhat brittle when dry, erect or
procumbent, on a cross-section 15 cells in diameter, cells opaque,
cortical cells 40-50, reddish-brown, smaller than the inner ; rootlets
few, near the base of the stem. Leaves closely imbricate,
bifarious, erect, appressed, semi-amplexicaul, subtransversely
inserted, subquadrate, broader than long, quadripartite, segments
lauoeolate, acute, furrowed, margin outwardly curved, near the
base furnished with long recurved teeth ; texture firm, cells
smallish, roundish-quadrate or oblong roundish-quadrate, walls
very thick, no trigones. Stipules large, oblong-subquadrate or
ovate, bipartite, segments lanceolate, acute or acuminate, furrowed.
JBracts larger than the leaves, subquadrate, broader than long,
quadridentate to about the middle, segments broadly subulate
or lanceolate, aonte or acuminate, furrowed, margin of bract and
segments laoiniate-dentate ; bracteole oblong subquadrate, bidentate
to the middle, segments broadly subulate or lanceolate, acute
or acuminate, furrowed, with a smaller outer lobule at both sides
at the base, margin laciniate-dentate. Perianth terminal, projecting
about half beyond the bracts, oblong-oval, deeply 9-10-plicate
to the base, 2 to 3 cells thick near the base, above one cell layer,
mouth delicate, hyaline, laciniate-oiliate, cilia 4-6 cells long,
2 cells wide at the base; pistillidia 12—15. Male stems much
more slender, with more distant leaves.
Dimensions.— Stems 1 to 2 inches long, T 2 5 mm. to '2 mm.
in diameter, with leaves "5 mm. to Lo mm. wide; leaves -6 mm.
X ’7 mm., segments '4 mm. x 2 mm., '5 mm. x '7 mm., seg.
45 mm. X '2 mm., 7 mm. x l ' mm., seg. ’45 mm. x '25 mm.;
cells -025 mm. x '02 mm., '03 mm. x '02 mm., 025 mm.
X-025 mm.; stipules '5 mm. x ;4 mm., seg. '35 mm.; subbracteole
'7 mm. X "5 mm., seg. '5 mm. ; bract I 'l mm. x '75 mm.,
segments '4 mm., '5 mm., '6 mm.; bracteole I 'l min. x '75 mm.,
seg. '6 mm.; perianth 1'8 mm. x '9 mm.; cilia at the mouth
•175 mm.
H a b .—Growing in large entangled patches or straggling
amongst mosses in alpine situations. Very rare.
15. Balmoral, George Stabter, July 1884.
Var. atpina. 15. Catlow Hills, O. Lyell, 1813, Glen Dole,
1855, Hb. Carrington. Glen Muiok, .T. Sim. Slack of Birnie,
•/. Sim. Cairngorm, Hooker. Scotch Alps, Dickson, Bonn.
Found on the Continent and in North America.
O b s .—Very distinct and not to be confounded with any other
of our British species. As Dr. Spruce remarks : “ The whole
habit, the leaves and their cells, &c., recall Chandonanthus squarrosm
and hirtellusL By some authorities it has been referred to Blepharostoma,
but in that genus the perianth is uniformly trigonous;
by others to Anthelia, where the leaves are only bifid and along
with the stipules, which are similar and give a tristichous insertion
to them; the perianth also is not so multiplioate.
Hooker figures the mouth of the perianth without cilia, but
in well developed specimens it is beset with them. It is only
recently that copious specimens with perianths have been found
in Norway.
The var. aljnna, Hook. [Jungermania filum, Dum.), is a much
smaller form, very slender, filiform, with more distant and less
dentate leaves; it might be confounded with Anthelia jidacea, but
is at once distinguished by its quadripartite leaves.
The typical form has, so far as I know, only been found in
Britain by Mr. George Stabler.
I have not seen the male plant nor perfect fruit.
Description of P late X L II.—Pig. 1. Plants natural size.
2. Portion of stem x ?. 3. Leaves x 31 (Balmoral, G. Stabler).
4, 5. Leaves, explánate x 24 (ditto). 6-8. Leaves x 31 (ditto).
9. Leaf and stipule x 24 (ditto) 10. Segment of leaf x 85