1- mm. X '6 mm., antical 1' mm. x ’5 mm., postical '8 mm. x
•4 mm.
H a b .—On damp or wet rocks, or on eartk-enornsting rocks,
near streams. Eare.
7. Torrent Walk, Dolgelly, Dr. Carrington and JF. II. P.
Tyn-y-Groes, Merioneth, W. II. P. 12. Lodore Falls, Cumberland,
Dr. Carrington and W. II. P. Eosthwaite, Cumberland,
Dr. Carrington and IF. II. P. 13. Ness Glen, Dalmellington,
Ayrshire, J. McAndrew. I. Dunkerron, Dr. Taylor. Tore Waterfall,
Dr. Spruce, Dr. Carrington. Eocks below Eagle’s Nest,
Cromaglown, G. B. Hunt. Glena, S' Stewart and Holt.
Not found on the Continent or in North America, the
specimens from Tallulah Falls, Georgia, belonging to a different
species.
O b s .— Distinguished from other dioicous British Badula by
its pale yellow colour, broad antioal lobes, and subrotund-cordate
auriculate postical lobes of the leaves, which are more or less
undulate and of a flaccid texture. Padida xalapensis, Mont,, from
Bolivia, according to the opinions of Dr. Spruce and Stephani,
who have seen original specimens, is a different species, which I
fully agree with, liaving myself examined them.
D escbtption oe P late X X I.— Fig. 1. Plant natural size.
2. Portion of stem, postical view x 24 (C. & P., n. 44). 3, 4.
Leaves, antical lobes x 24 (Tore Waterfall, E. Spruce). 5.
(Ditto) X (Herb. Taylor). 6, 7. (Ditto) x 24 (Tore, Dr.
Spruce). 8. Portion of leaf x 290 (Glena, Holt and Stewart).
9. Male catkin, postical view x 16 (ditto).
2. Radula Lindbergii,, Gottsche.
Radula cmiplanata (L.), var. propaguUfera, Nees, Nat. Bur. Leb, iii. p. 148 (1838).
Radula lÂndenbergiama, Gottsche, Hartmann’s Handb. Scaiid. Fl. 9, Aufl. p. 98
(1864), in error, should be R. Lindbergiana.
Radula cmimutata, Gottsche, Jack, “ Flora,” n. 23 & 25 (1881).
Dioicous, widely and shallowly cæspitose, medium to largish
in size, from dull greenish-brown to dark sordid brown. Stems
prostrate, subpinnate, irregularly or regularly bipinnate, branches
ascending. Leaves imbricate, patent-divergent. 70°, unequally
bilobed, antical lobe plane or slightly convex, crossing tlie stem,
subrotund or broadly obovate, margin quite entire or erose by
formation of gemmæ, postical lobe 3 to 4 times smaller, appressed
to the antioal lobe, quadrate, free angle acute, inner margin
reaching to the middle of the stem, upper angle rotundate or
acute ; cells smallish to medium in size, hexagonal, walls firm,
no trigones or thickened angles. Bracts unequally bilobed’
antical lobe obovate-elongate, postical lobe about one-third smaller’
oblong-quadrate, free angle acute or obtuse. Perianth projecting
to about the middle beyond the bracts, obovate, complánate, truncate.
Capsule brown, dividing into 4 longish oval valves, elaters
usually monospirai ; spores roundish. Androeoia terminal on the
chief stem or on long lateral branches ; perigonial bracts closely
imbricate, bilobed, turgid at the base, antioal lobe oval, apex rotundate,
postical sliglitly shorter, oval, apex obtuse ; antheridia spherical.
Gernmæ often abundant at the margin of tbe upper leaves.
D imensions.—Stems 1 to 2 inches long, with leaves 2' to 3'
mm. wide, diam. of stem '15 mm. ; leaves, antioal lobe 1'5 mm. x
1-25 mm., postieal lobe 75 mm. x -6 mm., antioal 1'25 mm.x
1- mm., postieal '6 mm. x '5 mm., antical 1’2 mm. x '8 mm., postical
•6 mm. x -4 mm. ; cells '0225 mm. x '0225 mm., '03 mm. x '03
mm., -0225 mm. x lOS mm. ; bracts, antical lobe L25 mm. x 75
mm., postical lobe 7 5 mm. x '5 mm.; perianth 2'25 mm, x I ’l
mm. ; elaters '3 mm. x ’006 mm. ; spores '03 mm.
H ab.— In spreading flat patches, closely attached to damp
rooks in exposed or shaded situations, usually in hilly or subalpine
localities. Eare.
2. New Forest, C. Lyell, 1818, March 12, 1814. 7. Clogwyn-
du-Arddu, Snowdon, Carnarvonshire, W. II. P. 12. Harter Fell,
and Mardale, Westmorland, G. Stabler. Near Keswick, Dr.
Carrington and JF. H. P. 15. Braemar, A. Croall.
Found on the Continent and in Canada (rocks near Belleville),
Maeoun.
Obs.—Distinguished from B. complánala (L.) by its dioicous
inflorescence; from R. aquilegia, Tayl., by its colour, and the