i
p. 47 ; Cromb. Lich. Brit. p. 8 ; Leight. Lich. Fl. p. 32, ed. 3, p. 28.
— Co^íTOfíí ncmím Hook. F l. Scot. ii. p. 72 ; Sm. Eiig F l v p 213-
' I M P- I I L Licheti lacerns Sw .'in Ach’.
Iro d r . (1 / 98) p. 113. Lichen lacer Eng. Bot. t. 1982. Liehen tre-
mella W ith . Arr. ed. 3, iv. p. 72. Lichen tremelloides Lightf. FI
Scot. u . p 842 ; Huds. Fl. Angl. cd. 2, p. 637. Lichenoides pellu-
cidum, endivioe fo liis tenuibus crispís Dill. Muso. 143, t. 19. f. 31 a ïï
Lichenoides saxatile tenue rufescens Dill, iu Ilay, Syn. é d .'3 ' 77. 89.’
B r it. E xs. : Mudd, n. 5, pro pa rte ; Larb. Cæsar. n. 4.
Easily recognized by the thallus and laciniæ. The thallus is more or
less effuse, often interrupted by fresh growths of the living musses upon
which I t is developed ; 111 a moist condition it is very delicate and sub-
peJliicid. I h e apotbecia, wliicli are rather rare in British specimens, are
sparingly and irregularly scattered.
Hab. Among mosses on the ground and old walls in shady places in
maritime and ujdand districts.-Dwfr. Pretty general, but not very
common, in the Channel Islands and most parts of Great Britain and
Ireland.—B. AI. : Quenvais, Island of Jersey. Near Cambridge : Shiere,
Surrey; Ventnor, Isle of W ig h t; Buckfastleigh and Alorleigh, Devonshire
; Penzance and near Withiel, Cornwall ; Cheddar Cliffs? SViinerset-
shire; near Cirencester, Gloucestershire; Seddingtou, Bedfordshire;
Chariiwood I orest Leicestershire ; Broadwas and Ahric, Worcestershire
Garn Dingle, Denbighshire;Cotteral Clough, Lancashire; near Kendal
M estmoreland ; Mulgraye Castle, Cleveland, Yorkshire ; Keswick, Cuni-
Ü Dumfriesshire; Barcaldine, Argyleshire ; Killin
bI I M 1 ertbsbire ; Glen Dole, Forfarshire; Corriemulzie,
Biaemar, zUerdeenshire; Lochaber, luverness-sliire. Blarney and Kil-
Galwaj“ ' Lillarney and Dingle Bay, co. Kerry ; Conbemara, co.
Form fimbriatum Nyl. Syn. i. (1858) p. ] 2 2 .-T h a llu s la rg e r;
lacmiæ broader, densely fimbriate and eiliate a t the margins the
cihæ very much branched. Apothecia much scattered.—Cromb.
Jo u rn . Bot. 18/4, p. 335; Leight. Lich. F l. Suppl. p. 468, cd. 2
p. 28.—CoMmffl fim b ria tum Hofim. Deutsoh. F l. (1795) p. 104.
Lichenoides pellucidum, endivioe fo liis tenuibus crispís Dill. AIusc"
143, t. 19. t Z l c . — B r it. Exs.-. Cromb. n. 108; Mudd, n. 5 pro’
p a rte . ’ ’ ^
From the type this differs chiefly in the densely fimbriato-ciliate
margins of the laciniæ, though both states occasionally occur in the same
specimen. VV ith us, as elsewhere, it is rarely seen fertile.
Hub Among mosses on rocks and old walls, chiefly iu upland tracts
W D i Z f ®M . Highlandd s.—B. AI. ; Luccombe, Isle of WightS; .'^nSecaor tlTLodt naenssd aHnod
lavistock, Devonshire; Cheddar Cliffs, Somersetshire; Chalford and
M e r im Z r r ’ G oucestershire ; Broadwas, Worcestershire ; Barmouth,
Almionethshire; Cleveland, A orkshire. New Galloway, Kirkcudbrighti
t t Z v S H v e r e L -™ ^ ^
Flora, 1878, p. 3 4 5 .-T h a llu s small,
p u h in a te , dark-brown ; lobes minute, much crowded, denticulatolaciniato.
Apothecia small, somewhat ra re .—Cromb. Journ. Linn.
Soo. Bot. xvii. p. 507.—Leptogium lacerum p . p u lvin a tum Aludd,
Alan. p. 47 ; Cromb. Lich. Brit. p. 8 ; Leight. Lich. Fl. p. 33, ed. 3,
p. 28. Collema pidvinatmn Hoft'm. Deutsch. Fl. (1795) p. 104.
Lichen tremelloides y Lightf. h i. Scot. ii. p. 842; W ith . Arr. ed. 3,
iv. p. 73. Lichenoides tenue crispum, fo liis exiguis surrectis Dill.
Muse. 146, t. 19. f. 34 a, et Lichenoides tenue crispum et veluti
amle'atum p. 146, t. 19. f. 85.— B r it. Exs.-. Larb. Cæsar. n. 55 ;
Lich. Hb. 11. 241.
This, which might almost be regarded as a distinct species, is dis-
tinn-uisiied by the minute, crowded, denticulate laciniæ ; it forms pulvinate
tufts which are either determinate or somewhat spreading. The
apothecia, which are seldom seen, are chiefly central.
Hab. On rocks and old walls, occasionally on the ground, among
mosses in upland and subalpine tracts.—Histr. Frequent in the Channel
Islands, Great Britain and Ireland, usually plentiful where it occurs.—
B.AL: Quenvais, Island of Jersey. Cromer, Norfolk; Epping Forest,
Essex; Shiere, Surrey; Boncburcli and Luccombe, Isle of Wight; near
rivmouth, Devonshire ; Bathampton Downs, Somersetshire ; Chalford
and near Cirencester, Gloucestershire ; Alalvern Hills, Broadwas, and
Alfric, AVorcestershire ; Twycross, Leicestershire ; Aberdovey, Alerionetli-
sbire; Clee Hills, Snropshire ; Kildale, Cleveland, AOrkshire ; Stavely,
VVOstiiioreland; Alston, Cumberland. Appin, Argyleshire; Killin and
Ben Lawers, Perthshire ; S. of Fort AVAlliam, Inverness-shire. Inchi-
gaggin, CO. Cork ; near Armagh, co. Antrim.
Subsp. 2. L. lophæum Nyl. ex Cromb. Grevillea, xv. (1886) p. 13.
Thallus very small, pulvinate, greenish-black ; lobes minute, very
much crowded, ciliato-dissect or ramoso-flmbriate, th e branohlets
cylindrical. Apothecia unknown.— Leptogimn lacerum y ar. lophoemn
Cromb. Liob. Brit. p. 8; Leight. Lich. F l. p. 34, ed. 3, p. 29.
Parmelia scotina y . lophoea Ach. Metb. (1803) p. 238.
Probably a distinct species, differing from the preceding subspecies in
the cylindrical branches and smaller thallus, which is composed of minute,
irregularly laciniate and ramulose denticulate lobes. With us, as elsewhere,
it is sterile.
Hab. On decaying stumps of old trees in maritime tracts.—Di'sfr.
Found but sparingly in N. VVteles and in the W^. Highlands of Scotland.
—B. M. ; Barmouth, Alerionethshire. Barcaldine, Argyleshire.
13. L. scotinum F r. Sum. Veg. (1846) p. 1 2 2 ; Nyl. Syn. i.
(1858) p. 123.—Thallus laciniato-lobed, plicate, reticulato-rugulose,
dark glaucous-green or brownish lead-oolonrcd; lobes rounded, somewhat
crowded, suberect and entire a t the m argins. Apothecia small,
concave, brownish-red, th e margin smooth, e lev a ted ; spores ovoid,
irregularly murali-looular, 0,024—41 mm. long, 0 ,0 08-0,016 mm.
thick.—Cromb. Lich. Brit, p., 8, pro p a rte.— Leptogium sinuatum
Mudd, Man. p. 47, pro p a r te ; Leight. Lich. FL p. 37, pro parte, ed. 3,
p. 39, pro parte. Lichen scotinus Ach. Prodr. (1798) p. 128.—B rit.
Exs. : Mudd, n. 6, pro p a r te ; Cromb. n. 109, pro parte.