larger cells, no bracteole, perigonial bracts with usually an antical
basal tooth.
D escription oe P late CXLII.—Fig. 1. Plants natural size.
2. Fertile stem x 24 (C. & P. n. 109). 3. Male stem x 16
(G. & R. 11. 265). 4. Leaf x 24 (Dolgelly, Dr. C. & AV. H. P.).
5. Ditto (Staveley, G. Stabler). 6-9. Ditto (Ben Nevis, Dr. Carrington).
10. Portion of leaf x 290 (Staveley, G. Stabler).
11. Bract x 24 (Dolgelly, Dr. 0. & W. H. P.). 12, IS. Ditto
(C. & P. n. 109). 14. Bracteole x 24 (ditto). 15. Ditto x 16
(Dolgelly, Dr. C. &AV. H. P.). 16. Pistillidium x 85 (Ben Nevis,
Dr. C.). i r . Perianth x 24 (Dolgelly, Dr. C. & W. H. P.).
18. Spores x 290 (ditto). 19. Elaters x 290 (ditto).
20, 21. Perigonial bracts x 24 (C. & P. n. 109). 22. Antheridium
x 85 (ditto). 23. Gemmae x 290 (G. & E. n. 190).
21. Ju n g e rm an ia gelida, Tayl.
Jungei'Tiiania gelida, Taylor, Jo u rn . of Bot. p. 277; n. 5 (1845); G. L. N. Syn.
Hep. p. 67C (1847); Dum. Hep. Eu r. p. 79 (1874).
, var. gelida, Cooke, Handb. B rit. Ju n g . p. 185 (1894).
Dioicous, growing intertwined in tufts of Cesia concinnata,
small, reddish-brown at the apices, below, and old stems brown in
colour. Stems creeping, or ascending, simple or innovant near
apex, flexuose, filiform, graceful, 10 cells in diameter, cortical cells
20-30, somewhat similar to the inner ones ; radiculose, rootlets
plentiful, long, whitish. Leaves approximate, ereoto-patent,
secund, subrotnnd, bifid to J, or rarely trifid, segments acute,
unequal, incurved, sinus obtuse or acute; cells small (large
for size of plant), roundish ; lumen filled with brownish granules;
walls thick, angles thickened. No stipules. <? and $ not been
seen.
D imensions.—Stems J to 1 inch long, diam. '15 mm., with
leaves '5 mm, leaves '5 mm. x ’4 mm., sinus '1 mm., '8 mm.
X -6 mm., sinus ’2 mm., 7 mm. x '7 mm., sinus '2 mm., '7 mm.
X '6 mm., sinus '15 mm., cells '02 mm.
H ab.— Scotch Alps growing intertwined with Cesia concinnata.
Brunmond. 16. Ben Nevis, Br. Greville. Eoshven, AVest
Inverness, 8. M. Macvicar.
O b s .—This is a pretty little species, and though it may possibly
be only a form of .Tuny, alpestris Schleioh., yet its habit, small,
secund, acutely bifid leaves with acute segments and different
cell structure lead me to look upon it as distinct.
D escription of P l .ate CXLIII.—Fig. 1. Plants natural size.
2. Plant X 24. 3-8. Leaves x 24. 9-14. Ditto x 31.
15. Portion of leaf x 290 (Scotch Alps, Drummond original.
Herb. Tayl.).
22. Ju n g e rm an ia incisa, Schrad.
Jungermania incisa, Schrader, Syst. Samml, krypt. Gew. 2 p. 5 (1797); Hook.
B rit. Ju n g . t. 10 (181G).
Lophozia incisa, Dum. Eecueil, p. 17 (1885).
Dioicous, cæspitose, small to medium in size, of a pleasant,
bright, light green colour. Stems prostrate or suberect, very thick
for the size of plant, frontally compressed, 9 and 10 cells by 14,
of a brown colour beneath, the postical cortical layer of cells ligneous
and indistinctly cellular, the antioal cortical cells smaller
and delicate, inner hexagonal, thin walls, with numerous dark
granules in each cell ; radiculose, rootlets very copious, on all the
under side of stem, whitish, thick, long; simple or furcately
branched, branohes often arising from base of perianth. Leaves
succubous, horizontally inserted, ascending, imbricating or accrescent,
closer and larger near the apex, subcomplioate, obovate,
deltoid, broadly ovate, bifid or irregularly trifid to about the
middle, margin entire or irregularly dentate or erose, segments
aonte or somewhat obtuse, often dentate about the middle, sinus
rounded or acute ; texture somewhat coarse, epidermis smooth ;
cells rather large, 4-, 5-, and 6-sided, lumen filled with chlorophyl
granules giving the plant a character distinct from its allies, walls
moderately firm, trigones small. No stipules. Bracts larger
than the leaves, bifid with large lateral segments, segments irregularly
and coarsely dentate. Bracteole none. Perianth project