flexuose, when fertile regularly pinnate, when sterile sparingly
branched or almost simple. Leaves approximate, hifarious,
alternate, erecto-patent, unequally bilobed, antical lobe convex,
ovate or oval-acuminate, apex incurved, margin coarsely and
irregularly serrate, postieal lobe about half the size of the antical,
oval, free margin involute, furnished with a large tooth near the
apex, below entire or slightly denticulate (1 or 2 minute teeth).
Cells smallish to small, 4-, 5- and 6-angled, walls firm, no thickened
angles or trigones. Stipules obtriangular, bifid, sinus broadly
sublunulate, segments subulate or triangular, very divergent, 3,
rarely 2 cells wide at the base. Eemale inflorescence on short
branches ; bracts smaller than the leaves but somewhat similar,
only both the antioal and postical lobes more serrate, the postical
not being involute. Perianth pyriform, brevi-rostrate, acutely
5-angled, keels above setose-spinose-winged, mouth when open
with few teeth. Andrcecia terminal on long branches; perigonial
bracts 3 to 4 pairs, erect or erecto-patent, closely imbricate, turgid
at the base, antical lobe serrate, postical almost equal in size ;
antheridia oval to globose, pale, stipe of equal length, arcuate-
curvate; perigonial bracteoles similar to the stipules, only with
segments less divergent.
D im e n s io n s.— Stem ^ inch long, '05 mm in diameter, with
leaves '3 mm. to '4 mm. wide; leaves, antical lobe ’325 mm. x
•175 mm., postieal '2 mm. x ^125 mm., antical ^25 mm. x •! mm.,
po.stical ^15 mm. x ^075 mm., antical ^25 mm. x •125 mm., postical
•175 mm. x •! mm.; cells ^02 mm., ^02 mm., x -025 mm., ^02
mm. X •OS mm.; stipules •! mm. x •! mm.; segments ^05 mm.,
•075 X •! mm., seg. •OS mm.; bract, antical lobe ^275 mm. x •125
mm., postical ^2 mm. x -1 mm.; perianth '6 mm. x A mm., beak
•01 mm. long; perigonial bract, antical lobe ^25 mm. x ^15 mm.,
po.stical '175 mm. x '125 mm. ; perigonial bracteole A mm. x •08
mm., seg. •OS mm.; antheridia ^08 mm. x ^06 mm.
H ab.—On shaded rooks, especially gold-hearing quartz,
rarely on trees. Eare.
7. Cwm Bychan, Merionethshire, Rev. Mr. Solway. Tyn-y-
Groes, Merionethshire, W. H. P., G. A. Holt. 10. Dent,
Yorks, G. Stabler. Ingleton, Yorks, G. Webster and W. H. P.
12. Lodore, Cumberland, G. Stabler, C. J. Wild, W. H. P. Eosthwaite,
Cumberland, Br. Carrington and W. H P . 15. Glen Tilt,
Mr. Durnford. 16. Moidart, West Inverness, S. M. Macvicar.
I. Killarney, Dr. Taylor, Dr. Spruce, W. Wilson, Dr. Carrington.
Brandon, Dr. Moore. Cromaglown, Prof. Lindberg.
Pound on the Continent and in South Africa.
O b s .—Distinguished from all other British Lejeunem
by the long acuminate distantly serrated antioal lobe of leaf
This hepatic has a most curious distribution ; it is found in fair
abundance on the gold-bearing reei's near the celebrated gold
mines at Tyn-y-Groes, in North Wales, also on quartz in
Borrowdale, at Ingleton in Yorkshire, not on the limestone
which is so abundant in the last-mentioned place, but on eruptive
rocks which are exposed near the river. In a collection of
hepatic» made at Kynsna, a gold-bearing district in South
Africa, by Hans Iversen in 1883, specimens of this species were
found agreeing in every particular with our native one.
D e sc r ip t io n of P la te IX.—Fig. 1. Plants natural size. 2,
Portion of stem, antioal view x 85 (Africa). 3. Portion of male
stem, antioal view x 85 (Cromaglown, S. O. Lindberg, and the
following). 4. Ditto, postical view x 85. 5-7. Leaves x 85.
8-10. Ditto, explánate. 11. Portion of leaf x 290. 12-14.
Stipules x 85. 15. Bract, explánate x 85. 16. Perianth x 31
17. Perigonial bracts x 85. 18. Perigonial bracteole x 85.
19. Antheridium x 85.
4. Lejeunea serpyllifolia {Dicks.), Lib.
Jungermania serpyllifolia, Dicks. PI. crypt. Brit. lasc. 4 (1801).
Lejeunea serpyllifolia, Lib. Ann. gen. sc. phys. 6, p. 374, n. 2, pp. (1820).
Dioicous, shallowly or densely c»spitose, small, pale or rarely
dark green or yellowish colour. Stems laxly creeping, irregularly
branched, rarely suhpinnate, radiculose, rootlets produced from
base of stipules, white, few, short. Leaves incubous, slightly
imbricate or approximate, patent-divergent to patent, unequally
bilobed, antioal lobe convex, obliquely ovato-oval, rotundato-
obtuse or obtuse, margin entire, rarely slightly repand, when dry
plano-adpressed, postical lobe much smaller than the antical.