Moss, Castle Douglas, J. McAndrew, Moors at Loch Skene,
JF. Ntchol. 15. Cairn Gorm, HiV F’, / . ZTooZer; Ben-na-Board and
Glen Dole, Forfar, A. Croall. 16. Moidart, West Inverness,
common, S. M. Macvicar. 1 7 a . Sutherland Mountains, Br.
Greville.
I. Wicklow Mountains, Br. Taylor; near Bantry, Uiss
Hutchins; Killarney, Br. Carrington, Prof. Lindberg, and
others.
Found on the Continent and in North America.
Obs. Distinguished from all other round-leaved species with
stipules, by the presence of the very copious rootlets, the thick
leaves, entire bracts and laterally compressed perianth; from
Mylia anomala (Hook.) by the never acuminate leaves, presence of
minute warts on the epidermis of the leaves and perianth, and the
mouth of the perianth being ciliate.
The easiest way to examine the epidermis is to detach a
leaf from the plant, bend it on the object-glass, place on it
carefully the cover-glass and examine in water with a ^ inch,
when the minute warts can be seen, about 7 or 8 on each cell.
The copious, dense rootlets cause the stems to be separated with
difficulty.
I once found a perigonial bract quite bifid, also an imperfect
perianth from which a perfect capsule projected, which, when
flattened out like a bract, was snbquadrate, emarginate, with the
whole of the margin ciliate-dentate.
D escription of P late CIX.—Fig. 1. Plants natural size.
2. Portion of stem, antioal view x 11 (Ireland, Lindberg).
3-5. Leaves x 11 (ditto). 6. Cross-section of leaf, showing
epidermis with the minute warts, free (ditto). 7. Portion of
leaf x 290 (Linton, Yorks., Holt). 8. 9. Stipules x 85 (Cwm
Byohan, North Wales, Holmes). 10, 11. Bracts x 16 (Linton,
Holt). 12. Bracteole x 24 (ditto). 18. Perianth x 11 (ditto)
14. Cross-section of upper portion of perianth x 11 (ditto)
15. Cross-section of middle portion of qierianth x 11 (ditto)
16. Cross-section of lower portion of perianth x 11 (ditto)
17. Portion of the mouth of perianth x 85 (ditto), 18, 19
Perigonial bracts x 16 (Cwm Bychan, W. H. P.). 20. Antheridium
X 85 (ditto).
2. Mylia anomala {Hook.), Gr. fl B.
.Tungermania anomala, Hook. Brit. Ju n g . t. 34 (1816).
Mylia arwmala, Gr. & B. Nat. Arr. Brit. PI. 1, p. 693 (1821).
Jungermania Taylori, var, anomala, Nees, Nat. Eur. Leb. 11, p. 455 (1836).
Coleochila anomala, Dum. Hep. Bur. p. 106 (1874).
Dioicous, loosely cæspitose or creeping amongst mosses,
largish to very large, of a yellowish-green to dark brown colour.
Stems (a oross-section shows about 30 cortical cells which are a
little larger and darker than the inner, 12 x 15 in diam.), procumbent,
simple or producing one or two short lateral innovant
branohes, flexuose ; radiculose, rootlets numerous, whitish, clothing
the whole of the underside of the stem. Leaves obliquely inserted,
horizontal to patent-divergent, bifarious, alternate, distant or
contiguous, ovate-acuminate, ovate or more rarely orbicular,
margin entire, or erose by gemmæ ; texture rather firm, but more
delicate than in Mylia Taylori, epidermis smooth, cells large,
oblong-quadrate, cell-walls somewhat thin, showing two bands,
trigones distinct, darker coloured than the lumen of the cells.
Stipules small, often hidden by the rootlets, subulate, bifid to
about the |, sinus very narrow, segments acuminate. Bracts
oblong-oval, apices often erose. Bracteole free from bracts, subulate,
about 15 cells broad at the base, bifid to about the
sinus very narrow, segments acuminate. Perianth ohlong-oval,
narrower at the mouth and base than the middle, laterally compressed,
mouth truncate, entire. Capsule roundish-oval; spores
light-brown ; elaters bispiral, about 12 turns of the spiral, reddish-
brown. Male stems more slender, t terminal or at the middle of
the stem, perigonial bracts smaller, more erect, semiamplexicaul,
sublobulate, ventricose, antheridia small, spherical.
Fruits June, July.
Dim en sio n s.—Stems from 2 to 4 inches long, ’5 mm. diam.,
with leaves 3'5 mm. wide; leaves 3' mm. x 1 7 5 mm., 2 7 5 mm.
x 1'5 mm., 2'5 mm. x 1 5 mm.; cells T mm. long x '05 mm.
broad, T mm. x '04 mm., ’08 mm. x '035 mm. ; walls '0075 mm. ;