1, Junge rmania cordifolia, Hooker.
Jicnyeo'mania cordifolia, Hook. Brit. Ju n g . t. 82 (1816).
Jungermania tersa, Nees N a t. Eur. Leb. 1, p. 329 (1833), fide le tte r from
Dr. Gottsche to Dr. Spruce.
Aplozia cordifolia, Dum. Hep. Eur. p. 59 (1874).
Dioicous, laxly cæspitose, flagella absent, large, dark olive-
green in colour, when young pale reddish-brown. Stems siinjde
or dichotomously branched, branohes lateral-suhqiostioal arising
I'ruin the postical aspect of the leaf axil, often several (8-6) arising
from the base of old bracts, suberect or floating, lax, oval on cross-
section. 12 cells X 20, cortical cells 40, similar to the inner,
hyaline, walls thin, fii-m, dark-brown ; rootlets absent. Leaves
transversely inserted, succubous, decurrent antically, slightly so
postically, suberect, subimbricate or approximate, accrescent, subopposite
near apex, close, lower smaller, alternate, distant, cordate
or ovate-oblong, sheathing, amplexicaul; texture flaccid; cells
smallish to medium in size, 4-, 5- and 6-sided, lumen with
numerous chlorophyl granules, walls firm, thick, reddish-brown,
no trigones or thickened angles. No stipules. Bracts similar to
the upper leaves, sub-vertical, ventricose-concave. No bracteole.
Perianth almost hidden by the bracts, projecting only about
fusiform, acute, very slightly plicate near the apex, near the base
composed of 3 layers of cells, lower half of 2, upper half of 1
only, interior layer of cells convex ; mouth contracted, very small,
laciniate, laciniæ entire. Perigonial bracts swollen near the base ;
antiieridia two in each bract, oval.
D imensions.—Stems from 1 to 4 inches long, ’3 mm. to '4
mm. diam.; leaves 2’25 mm, long x 2'25 mm. broad, 2' mm. x
175 mm., 175 mm. x 1-3 mm., 1'6 mm. x 1'3 mm., 1’5 mm.x
L25 mm.; cells '035 mm. x ’025 mm., '025 mm., '02 mm.;
perianth 4’5 mm. long x 1'25 mm. broad; young perianth
2'25 mm. x 75 mm.
H ab.—Growing in large patches on rooks and earth by the
side of mountain rills, often submerged in the water. Somewhat
7. Cwm Idwal, Carnarvonshire, W. II. P. 9. Longridge Pell,
J. A. Wheldon; Udale, Wheldon fl A. Wihon; Easegill Kirk, West
Lane., A. Wilson. 10. Howgill Pells, Dr. F. A. Lees. Whiteside,
Dr. F. A. Lees. Ingleboro, John Noioell. Ingleton, Dr.
Carrington. Claphain, W. West. Penyghent, W. West. Middles-
more, W. West. Teesdale, Dr. Spruce. 12. Plentiful in small
streamlets among the mountains in Westmorland, Nan Bield,
Mardale ; Hill Bell ; Merke Side ; Middleton Fell; Barbon Pell;
Long Sleddale, Westmorland, G. Stabler. 13. Dalveen Scott>
Criffel, Cruickshank. Blaokhope Glen, Nichol. 15. Ben Lawers,
G. A. Holt. Forfar, C. Lyell. Mael Tarmachan, C. J. Wild.
I. Rather rare in Ireland. Mangerton, in the stream from
the Punch Bowl, Dr. Taylor. Ooomashana Lake, Dr. Carrington.
Brandon, Dr. D. Moore. Maghanabo Glen, Co. Kerri',
I). AIcArdle. Cushinden, Co. Antrim, Dr. D. Moore.
Found on the Continent and in North America.
O b s .—This is very distinct, and cannot well be confused with
any of the allied species ; small forms of it have been mistaken
for .Tung, riparia, Tayl. (and Jung, tersa, Nees, which is a mixture
of both), but it is distinguished by the absence of rootlets and
flagella, the more distinctly cordate-shaped leaves, the transverse
insertion of them, and the almost hidden fusiform perianth.
When fresh it smells strongly like Daucus Caròta.
D escription oe P late CXXII.—Pigs. 1 and 2. Plants
natural size. 3. Fertile stem x 16 (C. & P. 27). 4-7. Leaves
x 16 (ditto). 8. Leaf x 11 (Penyghent, West.). 9. Portion
of leaf X 290 (C. & P. 27). 10. Perianth x 11 (Penyghent,
West.). 11. Cross-seetion of perianth from near the middle x
11 (ditto).