68 CYCLOCARPINEX [LEPTOGIUM 
plicate lobes, slightly wrinkled, often crisp at the margins and 
more or less granular. Apothecia scattered, rather small, concave 
or plane, reddish-brown, with a thick entire persistent margin ; 
spores ovoid, 3-septate and muriform, 18-30 » long, 8-16 p 
thick.—Leight. Lich. Fl. ed. 3, p. 30 (incl. f. minor). Lichenoides 
gelatinosum atro-virens, auriculatum et granosum Dill. Hist. Muse. 
p. 140, t. 19, figs. 24 B—p (1741). Lichen plicatilis Ach. in K. 
Vet. Acad. Handl. xvi. p. 11, t. 1, fig. 2 (1795). Collema plicatile 
Sm. Engl. Bot. t. 2348 (1812) ; Hook. in Sm. Engl. Fl. v. p. 209; 
Mudd Man. p. 38; Cromb. Lich. Brit. p. 5; Leight. Lich. Fl. 
p. 22. Enchylium plicatile 8. F. Gray Nat. Arr. i. p. 397 (1821). 
Collemodium plicatile Nyl. ex Lamy in Bull. Soc. Bot. Fr. xxx. 
p. 3387 (1883); Cromb. Monogr. i. p. 59 (inel. f. minus). 
Exsicc. Cromb. n. 106. 
Distinguished by the very thick plicate often granular lobes, hence 
Nylander’s name L. firmwm (Lich. Scand. p. 34 (1861)). There is a 
thin inconspicuous cellular cortex. The lobes are sometimes rather 
thinner (f. minus). 
Hab. On caleareous rocks and walls, rarely on trunks of trees, in 
maritime and inland districts.—Distr. Somewhat scarce in S.W. 
England, rare in W. Highlands of Scotland and §8.W. Ireland.—B. M. 
Upton, Babbicombe and Plymouth, Devon; Shoreham, Beeding, 
Aldbourne and Lewes, Sussex; near Maidstone, Kent; near Ciren- 
cester, Gloucestershire ; Mendip Hills, Somerset ; Marlborough, Wilts ; 
I. of Lismore and Appin, Argyll; near Kenmore, Ardtully and Dun- 
kerron, Kerry. 
Var. hydrocharum A. L. Sm.—The thick rigid lobes more 
spreading and depressed, greyish or glaucous-grey.—Parmelia 
hydrochara Ach. Meth. p. 222 (1803).  Collema pulposum 
f. hydrocharum Cromb. in Journ. Bot. xii. p. 333 (1874); Leight. 
Lich. Fl. ed. 3, p. 18. Collemodium plicatile £. hydrocharum Ny)l. 
in Flora lvii. p. 302 (1875); Cromb. in Grevillea xv. p. 12 
(1886) & Monogr. i. p. 60. 
Hab, On damp calcareous rocks.—B. M. Craig Tulloch, Perthshire. 
6. L. fluviatile Cromb. in Journ. Bot. xii. p. 336 (1874).— 
Thallus laciniate-lobate, thin or thickish, the lobes oblong, some- 
what uneven in outline, flexuous and folded, simple or proliferous, 
greyish-green or dark greyish-glaucous. Apothecia small, sub- 
marginal, prominent, somewhat concave or plane, dark-red, with 
a paler entire margin; spores ellipsoid, usually 3-septate, 
becoming muriform, 16-23 long, 7-9 » thick.—Leight. Lich. 
Fl. ed. 3, p. 32. Lichenoides gelatinosum opuntioides Dill, in Ray 
Syn. ed. 3, p. 72, n. 58 (1724). Lichenoides gelatinosum foliis 
angustioribus tuneformibus Dill, Hist. Muse. p. 142, t. 19, f. 28 
(1741). Lichen fluviatilis Huds. Fl. Angl. ed. 2, p. 536 (1778) ; 
With. Arr, ed. 3, iv. p. 97 ; Engl. Bot. t. 2039. Collema flwiatile 
(errore fluviale) Ach. Syn. p. 314 (1814); Hook. in Sm. Engl. 
Fl. v. p. 209; Mudd Man. p. 40; Cromb. Lich. Brit. p. 5; 
