LEPTOGIUM | COLLEMACE® Til 
immersed, and the margin is generally fringed by the lacinie. Not to 
be confused with ZL. lacerwm var. pulvinatum, which has broader 
lacinie and superficial apothecia. 
Hab. On the ground among mosses and short grass in maritime 
and inland districts.—Distr. Rare throughout England, Scotland and 
Treland.—B. M. Sandown and near Shanklin, I. of Wight; near 
Penzance, Cornwall; Twineham and near Hastings, Sussex; Writtle, 
Essex; near Yarmouth, Suffolk; near Norwich, Norfolk; near 
Easby, Cleveland, Yorkshire; New Galloway, Kirkcudbrightshire ; 
near Cramond, Edinburgh ; Appin, Argyll; Ben Lawers, Perthshire ; 
Middleton, Cork. 
12. L. subtile Nyl. in Mém. Soc. Sci. Nat. Cherb. v. p. 90 
(1857:.—Thallus effuse, composed of minute lacinie, deeply 
divided or granular-crenate, dark- or brownish-green. Apothecia 
very minute, superficial and pale-brown or reddish, darker when 
dry, the margin thin, entire, pale-brown ; spores ovoid, 3—5-septate 
and muriform, 20-23 » long (or longer), 8-19 » thick.—Mudd 
Man. p. 46, t. 1, fig. 8; Cromb. Lich. Brit. p. 8; Leight. Lich. 
Fl. p. 31; ed. 3, p. 29. Lichen subtilis Schrad. Spicil. Fl. Germ. 
p. 95 (1794); Dicks. Pl. Crypt. fase. iv. p. 25; Engl. Bot. 
t. 1008. Collema subtile Ach. Syn. p. 328 (1814) ; Hook. in Sm. 
Engl. Fl. v. p. 213; Tayl. in Mackay Fl. Hib. ii. p.111. Poly- 
chidium subtile 8. F. Gray Nat. Arr. i. p. 401 (1821). 
The thallus is normally appressed to the soil, and the laciniate 
character difficult to see clearly. It is distinguished by the per- 
sistently minute apothecia and by the usually rather small spores. 
Hab. On clay soil, on cretaceous stones in the ground, rarely on 
the roots of old trees in inland districts.—Distr. General though not 
very common throughout the British Isles.—B. M. The Grove, Jersey ; 
Luccombe and Shanklin, I. of Wight; Withiel, Cornwall; near Henfield 
and near Tunbridge Wells, Sussex ; near Wootton-under-Edge, near 
Cirencester, Gloucestershire; Folkestone, Kent; Shiere, Surrey ; 
near Hale End, Epping Forest, Essex; Colwall. Herefordshire ; 
Tilton Hills, Leicestershire ; Pembrokeshire ; near Ayton, Cleveland, 
Yorkshire ; Sunnyhow, Cumberland; Dunkerron, Kerry. 
13. L. amphineum Nyl. Lich. Scand. p. 32 (1861).—Thallus 
thin, unequal, agglutinate, crustaceous, appressed to the sub- 
stratum, bluish- or brownish-green. Apothecia small, pale or 
reddish, becoming darker, concave, becoming plane, with a 
distinct entire margin; spores ellipsoid or ovoid, 3-septate and 
muriform, 23-27 pw long, 9-11 » thick—Cromb. in Journ. Bot. 
xi. p. 133 (1873); Leight. Lich. Fl. ed. 3, p. 26. Collema 
amphinewm Ach. ex Nyl. l. ¢. 
Scarcely to be distinguished from the preceding except by the 
more agglutinate-crustaceous thallus and by the apothecia becoming 
somewhat larger. 
Hab. On the ground, rarely on roots of old trees in shady places. 
—Dist. Found only sparingly in S. and W. England.—B. M. Newlyn 
Cliff, Penzance, Cornwall; Henfield, Sussex; Newbury, Worcester- 
shire ; Wooton-under-Edge, Gloucestershire. 
