LEPTOGIUM | COLLEMACEX® (Ks 
Hab. On rocks, old walls and on the ground among mosses.— Distr. 
Frequent and plentiful where it occurs throughout the British Isles. 
—B. M. Quenvais, Jersey; near Launceston, Cornwall; near Ply- 
mouth, Devon; Bonchurch and Luccombe, I. of Wight ; near Arundel 
and Cisbury, Sussex; Shiere and Reigate, Surrey; Bathampton 
Downs, Somerset ; Coln Rogers, and near Cirencester, Ablington and 
Stroud, Gloucestershire; Epping Forest, Essex; Newbury, near 
Worcester; Clee Hills, Shropshire; Cromer, Norfolk; Kildale, Cleve- 
land, Yorkshire ; Stavely, Westmoreland ; Alston, Cumberland ; Appin, 
Argyll; Killin and Ben Lawers, Perthshire ; Inchigaggin, Cork. 
Var. lopheum Nyl. Syn. Lich. i. p. 123 (1858).—Thallus of 
very crowded lobes, somewhat pulvinate in habit, the lobes 
minute, with cylindrical branching cilia almost obscuring the 
lobes. Apothecia unknown.—Cromb. Lich. Brit. p. 8; Leight. 
Lich. Fl. p. 33; ed. 3, p.29. Subsp. lopheeum Cromb. in Grevillea 
xv. p. 13 (1886) & Monogr. i. p. 71. Parmelia scotina var. 
lopheea Ach. Meth. p. 238 (1803). 
Considered by Crombie and others to be almost specifically 
distinct ; but occasionally the lobes are a little more spreading, and 
the affinity with the species is then more apparent. 
Hab. On decaying stumps of old trees.— Distr. Rare in N. Wales 
and the W. Highlands of Scotland.—B. M. Barmouth, Merioneth ; 
Barcaldine, Argyll. 
Thallus of large spreading lobes, dark or bluish-leaden coloured. 
Smooth beneath. 
21. L. palmatum Mont. in Webb & Berth. Hist. Nat. Iles 
Canar. Sect. iv. p. 128 (1840).—Thallus laciniate, the laciniz 
thin, often long and narrow, revolute at the margins and horn- 
like, or rather broad, suberect and crowded, greenish- or glaucous- 
brown, often tinged purplish. Apothecia rare, minute, sessile 
on the lobes, pale red, with an entire prominent margin ; spores 
ellipsoid or broadly fusiform, irregularly muriform, 28-40 p» long, 
16-18 » thick.—-Mudd Man. p. 48; Cromb. Lich. Brit. p. 9; 
Leight. Lich. Fl. p. 34; ed. 3, p. 31. Lichenoides gelatinosum 
tenerius laciniatum ea fusco purpurascens Dill. in Ray Syn. ed. 3, 
p- 72, n. 54 (1724). Lichenoides pellucidum fuscum corniculatum 
Dill. Hist. Muse. p. 143, t. 19, fig. 30 (1741). Lichen palmatus 
Huds. Fl. Angl. ed. 2, p. 536 (1778) ; With. Arr. ed. 3, iv. p. 74; 
Engl. Bot. t. 1635. Scytenium palmatum 8. F. Gray Nat. Arr. i. 
p- 398 (1821). Collema palmatum Ach. Lich. Uniy. p. 643 
(1810) ; Hook. in Sm. Engl. Fl. v. p. 210. 
Distinguished from the preceding by the revolute margins of the 
nearly erect lacinie. It is occasionally the host of the parasitic 
lichen Obryzwm corniculatum. 
Hab. Among mosses and short grass in sandy and gravelly places. 
—Distr. General in the Channel Islands and England, rare in Scotland 
and Ireland.—B. M. St. Brelade’s Bay, Jersey ; ; Lustleigh Cleeve, 
Bottor Rock and near Okehampton, Devon; near Stoney Cross, New 
