•;1
;ii
1. Scapania compacta {Poth), Bimi.
Jungermania compacta, Roth, Tent. Fl. Germ. 3, p. 375 (1800).
Jxmgermania resupinata, Web. et Mohr Crypt. Germ. p. 427 (1807) ; Hook.
Brit. Ju n g . n. 23 (1816).
Radula resupinata, Dum. Comm. Bot. p. 112 (1823).
¡icapania compacta, Dum. Recueil, p. 14 (1835).
Plagiochila compacta, M. et N. in Kees Nat. Eur. Leb. I l l , p. 519 (1888).
Paroicous, loosely cæspitose, small, yellowish-brown. Stems
firm, fle.xuose, simple or innovantly branched, suberect or prostrate,
radiculose up to apex, rootlets dirty-white. Leaves subtransversely
inserted, approximate, accrescent, shortly and subequally
bilobed, antical lobe slightly smaller than the postical, lobes
rotund or semi-oval, entire or rarely denticulate, texture firm,
epidermis smooth, cells smallish to medium, subguttulate, walls
somewhat thick, trigones large. Bracts similar to the leaves but
larger, often denticulate. Perianth large, projecting much beyond
the bracts, broadly obovate or turbinate, moutli wide, entire or
irregularly denticulate. Antheridia (about 4 to 6 in each bract)
oval, situated immediately below the perianth at the base of the
bracts, which are slightly swollen.
Fruits April, May, June.
D imensions.—Stems ^ inch long, A mra. to '4 mm. diam.,
with leaves 2 -mm. wide ; leaves, upper, antioal lobe lA mm.x
1'25 mm., postical 1'75 mm. x 1'25 mm., lower, antioal lobe
1' mm. X '75 mm., postical 1'25 mm. x '75 mm. ; cells '03 mm. ;
bracts, antioal lobe 1'5 mm. x 1' mm., postical 1'75 mm. x 1' mra. ;
perianth 3’ mm. x 2 'mm. wide at the mouth, 2'25 mm. x 1'5 ram.,
antheridium '2 mm. x T75 mm.
H a b .—Growing on clayey and sandy banks, and on mud-
covered walls. Generally distributed.
1. Common, West Cornwall, W. Curmw. 2. Isle of Wight,
G. E. Davies. 3, 4. About Edgefield and Hempstead Hill,
Norfolk, Rev. R. B. Francis. Norfolk and Suffolk, Dr. W. J. Hooker.
7. Penmaenpool, Merionethshire, E. M. Holmes, Dolgelly,
Merionethshire, W. H. P. Festiniog, Carnarvonshire, Dr. Car-
8f TF. H. P. 10, 12. On rooks, Witherslaok; in a wood
near Staveley Church; Rayrigg Wood, Windermere; Oxenden,
Great Langdale, Westmorland, G. Stabler. 13. Frequent, Kirkcudbrightshire
and Dumfriesshire, J. McAndreiD. 14, 15. Ben
Lawers, C. J. Wild. Braemar, R. Kidson. Gateside, Strachan, J. Sim.
16. Frequent on rocks and boulders, Moidart, West Inverness,
S. M. Macvicar.
I. Brandon, Co. Kerry, Dr. D. Aloore.
Found on the Continent and Madeira.
Obs.—At once distinguished from any of the other known
British Scapania hy its paroicous inflorescence, tlie antheridia
being found in the bracts immediately below the perianth, which
is very rarely the case with any of this genus.
Apart from its inflorescence it is a very distinct species, its
compact habit, almost equal lobes of leaves and bracts, its habitat,
mud-covered walls and clayey banks in the plains, often near the
coast, readily enable the student to identify it.
D escription or P late LXXX.—Fig. 1. Plants natural size.
2. Portion of fertile stem, antical view x 16 (168 G. & E.).
3. Upper leaf, explánate x 16 (ditto). 4, 5. Leaves x 24 (Isle
of Wight, G. E. Davies). 6. Portion of leaf x 290 (168 G. & R.).
7. Bract, explánate x 24 (Isle of Wight, G. E. Davies).
8, 9. Bracts x 24 (ditto). 10. Perianth x 24 (Cader Idris,
W. H. P.). 11. Portion of mouth of perianth x 85 (ditto).
12. Antheridium x 85 (Isle of W ight, G. E. Davies).
2. Scapania Bartlingii [Hampe), Nees.
Jungermania Bartlingii, Hampe in Nees Nat. Eu r. Leb. 11, p. 425 (1836).
Scapania Bartlingii, Nees in G.L.N. Syn. Hep. p. 64 (3 844).
Jungermania cuspiduligera, Nees Nat. Eur. Leb. 1, p. 180 (1833).
Plagiochila BaiPingii, M. e t N. in Nees Nat. Eu r. Leb. 131, p. 520 (1838).
.Tungermania rupestris, Schleich. Cat. Exs. (1821) ?
Scapania Carestioe, De Not. in Mem. Accad. Torin. (1858) ?
Dioicous, loosely cæspitose, small, of a pale green colour.
Stems pale brown, somewhat tender, but proportionately thick