antheridia immersed, disqiosed in rays, oblong. At the base
ot tbe ¡redunde are a few very delicate white scales.
. D im e n s i o n s .—Fronds 1 to 2 inches long, ¿ to ¿ inch broad,
near the margin A mm. and at the middle 1' mm. th ick ;
spores '08 mm. diam. ; elaters '25 ram. long ; female pedicel
1 to 2 inches long; male pedicel ¿ to f inch long; 75 mm. x
A mm. diam. ; male receptacle 2' mm. to 3' mm. diam. ; antheridia
•4 mm. X -2 mm.
H ab.—On rooks in exposed or shady situations. Frequent in
sub-alpine localitie.s.
G, 7. Barmouth, Merionethshire, Dr. Carrington fl IF. IL P. ;
Llanberis, Caruarvonshire, J. Cash fl TF. II. P. 9, St. Annes,
Lane., J. A. Whetdon ; Easegill, Lane., Wheldon fl A. Wilson ; by tlm
Hodder, near Wliitewell, Lane., / . Wheldon ; Millers Dale,
Derbysliire, W. I I P. 10. Clapham, Br. Carringion é W. IL F.
Teesdale, abundant, Br. Sqtrnce, M. B. Slater, ko. 12. Hill .Bell;
Mardale; Barbon Fell ; Grisedale; Little Langdale, Westmorland!
G. Stabler. 13. Wet rooks, in sub-alpine glens, Scott; W. of
Clnden ; Burnhill.s, Kirkcudbrightshire, J. McAndrew. 15. Ben
Lawers, Perthshire, W. I I. P. 16. Bather common among
wet shady rocks ; also occurs iu stony marshy places, Moidart,
West Inverness, A. M. Macvicar. 17a. Caithness, Bev. David
L i Hie.
I. Bavine below Eagle’s Nest, Killarney, Dr. Carringion;
Dunkerron, Hr. Taylor; Kenmare, W. Wilson; fissures of damp
rocks, and on damp ground in mountainous parts of the country,
particularly in limestone districts ; oooasionally on sandy
ground near the sea, as at North Bull, near Dublin ; frequent
in Co. Galway ; rocks above Kylemore Castle, and by the side
of the lake at Letterfrack; abundant near Cong; Sillagh-braes,
near Larne; Co. Antrim; Co. Kildare; Co. Kerry, about
Killarney, &o., &c., Br. B. Moore.
Found in Europe, Asia, North America and Japan.
O b s .—I have adopted the usually accepted name for this
species, because it would certainly be unwise to follow Cogniaux
and Dumortier in having two species so liable to be confounded
with each other bearing the same specific names. Lindberg
revives Scopoli’s old name, but Nees and others had doubts about
the species being identical. To distinguish the species from
Reboulia hemupharica (L.) with which it is frequently confnsed,
see notes under that species.
D escription oe P late CCXI.—Eig. 1. Eronds natural size
(Taylor). 2-4. Ditto, with female flowers, natural size (ditto). 5.
Frond wilh male flower, natural size (Bischoff). G. Cross-section of
frond X 11. 7. Pore x ? (Taylor). 8-12. Female receptacles x ?
(Bischoff). 13. Calyptra and capsule X ? (ditto). 1 4 . Ditto (ditto).
15. Male receptacle x ? (ditto). IG. Cross-section of portion of
male receptacle x ? (ditto). 17. Cross-section of male pedicel x 16.
18. Antheridium x 24. 19. Spores and elaters x ? (Bischoff).
Genus 49. LUNULARIA, Illch.
Lunidaria, Mich. Nov. pi. gen. p. 4, tab. 4 (1741).
Marchantia cruciaia, Linn. Sp. pi. (1753).
Frond oblong, with rounded lobes, distinctly areolate and
porose, squamigerous. Scales imbricate, sublunulate, their apex
abruptly contracted into a roundish cochleariform lobe. Gemmæ
iu crescent-shaped discs on tbe antical side of the frond. Female
receptacle cruciately divided into _1-G (usually 4) horizontal
segments or involucres, which are tubular, vertically bilabiate and
1-fruited. Perianth wanting. Calyptra included, persistent,
rupturing at the apex. Capsule exserted on a long pedicel,
4-8-valved, the valves spreading, subtortuous. Spores minute,
nearly smooth. Elaters short, very slender, hispiral, deciduous
or a lew remaining attached to the apex of the valves. Peduncle
very hairy, involúcrate with numerous membranaceous scales at the
base. Androecia oblong, sessile in the sinus of the apex of the
frond.