74 CYCLOCARPINEE [LEPTOGIUM 
Hab. Among mosses on cretaceous and calcareous soil, rarely on 
the mortar of old walls, in maritime and inland situations.—Dvstr. 
General but not common throughout the British Isles —B. M. Moulin ~ 
Huet, Guernsey; Shanklin, I. of Wight; St. Minver, Cornwall; near 
Plymouth, Torquay and Babbicombe, Devon; the Downs, EKartham, 
Woolsonbury, Offham and Halnaker, Sussex ; Shiere, Surrey ; Cheddar 
Cliffs and Bathampton Downs, Somerset; near Cirencester, Wynd- 
cliff and near Bristol, Gloucestershire; near Oswestry, Shropshire ; 
Miller’s Dale, Derbyshire; Anglesea; Appin, Argyll; Blackrock near 
Cork; Muckross, Killarney and Dunkerron, Kerry; Dawros, Conne- 
mara, Galway; Sheep Walk, Armagh. 
19. L. sinuatum Massal. Mem. Lich. p. 88 (1853).—Thallus 
of rather small lobes, crowded and suberect, plicate, wrinkled, 
rarely smooth, crenate and denticulate at the margins, those at 
the circumference rather larger, dark-brown or rarely glaucous- 
leaden-coloured. Apothecia rather small (up to 1 mm. in 
diameter), concave or plane, reddish, the margin thick, entire ; 
spores ovoid or ellipsoid-fusiform, 3-septate and irregularly 
muriform, 21-50 p long, 8-18 » thick.—Mudd Man. p. 47 pro 
parte; Leight. Lich. Fl. p. 34; ed. 3, p. 29 pro parte; var. 
crenatum Leight. Lich. Fl. ed. 3, p. 30 (1879). LZ. scotinum var. 
erenatum Nyl. in Flora lviii. p. 106 (1875); Cromb. in Grevillea 
xv. p. 13 (1886) & Monogr. i. p. 73. Lichenoides tenue crispum, 
foliis parvis depressis Dill, Hist. Muse. p. 145, t. 19, fig. 33 
(1741). Lichen sinuatus Huds. Fl. Angl. ed. 2, p. 535 (1778) ; 
With. Arr. ed. 3, iv. p. 75; Engl. Bot. t. 772. Collema sinuatum 
Hoffm. Deutschl. Fl. ii. add. to p. 104 (1795); Hook. in. Sm. 
Engl. Fl. v. p. 213; Tayl. in Mackay Fl. Hib. ii. p. 110. 
Lathagrium sinuatum 8. F. Gray Nat. Arr. i. p. 400 (1821). 
L. scotinum var. sinuatum Malbr. in Bull. Soc. Nat. Rouen, 1866, 
p- 365; Cromb. Monogr. i. p. 72. 
Exsicc. Cromb. n. 109; Johns. n. 167. | 
Distinguished from the preceding by the more flattened, closely 
imbricate lobes and by the larger apothecia. The plant described by 
Mudd and Leighton and by Crombie (Lich. Brit. p. 8, as L. scotimwm) 
includes both the species and the variety. 
Hab. Among mosses on old walls and boulders, chiefly in maritime 
and hilly regions.— Distr. Rather rare in Great Britain, chiefly in the 
W., rare in §. and W. Ireland.—B. M. Near St. Lawrence, I. of 
Wight; Chagford, Devon ; Storrington, Sussex; near Maldon, Essex; 
near Cirencester, Gloucestershire ; Garn, Denbighshire ; Pentregaer, 
Oswestry ; Teesdale, Weardale and near Stanhope, Durham; Bowling, 
Dumbartonshire ; Appin, Argyll; Glen Fender and Killin, Perthshire ; 
Morrone, Braemar, Aberdeenshire; near Forres, Elgin; Blarney, 
Cork; Dunkerron, Kerry. 
Form Polinieri Leight. Lich. Fl. ed. 3, p. 30 (1879).—Thallus 
pale-greenish. Apothecia somewhat scattered.—L. scotinum f. 
Polinieri Cromb. in Journ. Bot, xii. p. 336 (1874) & Monogr. i. 
p. 72. Collema Polinieri Del. ex Nyl. Syn. Lich. i. p, 123 
(1858). 
