66 COLLEMACEL. [LEPICGIUM. 
the S.W. and Central Highlands of Scotland, and S.W. Ireland.—B. M. : 
The Grove, Island of Jersey. Near Hale End, Epping Forest, Essex ; 
Shiere, Surrey; Folkestone, Kent; West Downs and Henfield, Sussex ; 
Shanklin, Luccombe, and Bonchurch, Isle of Wight; near Withiel, Corn- 
wall; Clevedon, Somersetshire; near Wootton-under-Edge, Gloucester- 
shire; Colwall, Herefordshire; near Ayton, Cleveland, Yorkshire. 
Island of Lismore, Argyleshire; Clova, Forfarshire. Dunkerron, co. 
Kerry. 
6. L. amphineum Ny]. Lich. Scand. (1861) p. 32.—Thallus ad- 
nate, very thin, or subcrustaceous, unequal, olive or hrownish-green. 
Apothecia small, concave, dark-reddish, the margin thickish ; spores 
ellipsoid or ellipsoideo-ovoid, 3-septate and variously divided, 
0,023-27 mm. long, 0,009-0,011 mm. thick.—Cromb. Journ.. Bot. 
1874, p. 183; Leight. Lich. Fl. ed. 3, p. 29.—Collema amphineum 
Ach, ea Nyl. lc. 
Differs from LZ. humosum in the more continuous and equal thallus, 
and in the structure of the spores, and from ZL. subtle, of which it seems 
a subspecies (Grevillea, xv. p. 12), in the more crustaceous thallus and 
larger spores. The plant spreads thinly over the substratum, and with 
us is sparingly fertile. 
Hab. On the ground, rarely on roots of old trees, in shady places in 
maritime and upland tracts.—Distr. Found only sparingly in S. and W. 
England.—B. M.: Henfield, Sussex; Newlyn Cliff, Penzance, Cornwall; 
Stroud, Gloucestershire ; Newbury, Worcestershire. 
7. I. minutissimum Fr. Sum. Veg. (1846) p. 122; Koerb. Par. 
(1865) p. 423.—Thallus thinly membranaceous, minutely lobed, 
smooth, olive-green or leaden-brown ; lobes imbricate, inciso-crenate 
at the margins. Apothecia minute, concave, reddish-brown, the 
margin thin, entire, or sometimes at length subcrenulate; spores 
oblongo-ovoid, irregularly murali-locular, large, 0,024—0,030 mm. 
long, 0,009-0,015 mm. thick.—Collema minutissimum Florke, 
Deutsch. Lich. (1815) n. 99. Leptogium lacerum var. crenatum 
Nyl., ew Carroll, Journ. Bot. 1866, p. 22. Leptogium subtile f. lati- 
usculum Nyl. ex Josh. Grevillea, iv. p. 43; Leight. Lich. Fl. ed. 3, 
p- 29. Leptogium sinuatum var. crenulatum Cromb. Journ. Bot. 
1874, p. 336; Leight. Lich. Fl. ed. 3, p. 40. Leptogium fragrans 
Mudd, Man. p.46; Leight. Lich. Fl. p. 30, pro parte. Collema fra- 
grans Tayl.in Mack. Fl. Hib. ii. p. 107.— Brit. Ews.: Cromb. n. 107. 
This species, little understood by British authors, looks like a diminu- 
tive state of ZL. lacerwm, though at once separated by the texture of the 
thallus. From the closely allied Z. subdtile it is distinguished by the 
more developed thallus and the larger spores. The apothecia, which are 
numerous and crowded, are gyalectiform and superficial. 
Hab. On the ground, rarely on trunks of old trees, in upland districts. 
—Distr. Local and rather scarce in S., W., and N. England, rare in S. 
Treland.—B. M.: Halstead, Kent ; Butler’s Holt, Buckinghamshire; near 
Cee Gloucestershire ; near Ayton, Cleveland, Yorkshire. Bantyy, 
co. Cork. 
