LECANORA. | LECANO-LECIDEFI. 433 
_ Hab. On the trunks of trees and on old pales, especially fir, in mari- 
time and upland districts.—Distr. Probably general in Great Britain, 
usually plentiful where it occurs; rare in the Channel Islands and S. 
Treland—B. M. : Beauport Bay, Island of Jersey. Lydd, Kent; New 
Forest, Hants; near Torquay and Totness, 8. Devon; Roche, Cornwall; 
Malvern, Worcestershire ; near Ludlow, Herefordshire ; Bettws-y-Coed 
and Trefriw, Carnarvonshire ; Staveley, near Kendal, Westmoreland ; 
Ennerdale, Cumberland. New Galloway, Kirkcudbrightshire ; Barcal- 
dine, Argyleshire ; Craig Calliach and near Loch Tummel, Perthshire ; 
near Forfar; Durris, Kincardineshire ; Countesswells Wood, near A ber- 
deen, and Mar Forest, Braemar, Aberdeenshire; Rothiemurchus Woods, 
Inverness-shire. Glenbower Wood and Castlebernard Park, co. Cork. 
Var. y. smaragdocarpa Nyl. Flora, 1872, p. 248, nota 1.— 
Thallus as in the type. Apothecia bright emerald-green.—Cromb. 
Grevillea, xviii. p. 69. 
From the peculiar colour of the apothecia to be regarded as a distinct 
variety. In the only British specimen the thallus is scarcely visible, 
though the apothevia are Sonica tat crowded, convex, with the margin at 
length excluded. 
Hab. On decorticated stumps of oak in an upland district.— Distr. Very 
rare in Central England.—B. M.: Summit of the Chiltern Hills, Oxford - 
shire. 
Subsp. L. inversa Nyl. Flora, 1879, p. 361.—Thallus nearly as 
in the type. Apothecia small, the thalline margin distinct, per- 
sistent, subentire, epulverulent ; spores not seen.—Cromb. Grevillea, 
xviii. p. 69. 
As observed by Nylander J. c. the thallus (which is somewhat firmer) 
agrees in the reaction with L. expailens, while the thalline margin of the 
apothecia is subsimilar to that of Z. varia. Were the spores known, it 
might probably be a distinct species. aes 
Hab. On the branches of furze in an upland district — Distr. Only a 
fragmentary specimen from 8.W. Ireland (s. n. Lecanora albo-flavida 
Tayl. nov. sp.)—B.M.: Finnechy River, co. Kerry, 
119. L. symmicta Ach. Syn. (1814) p. 340; Nyl, Flora, 1872, 
p. 249.— Thallus subeffuse, thin or very thin, subleprose or 
minutely granulose, pale yellowish-green or whitish-straw-coloured 
(K+yellow, CaCl+orange). Apothecia small, biatorine, at first 
plane with thin, entire margin, speedily convex and immarginate, 
pale-yellow or pale-testaceous, partly olivaceous; spores oblong, 
0,011-14 mm. long, 0,004-5 mm. thick; paraphyses slender, not 
very well discrete; hymenial gelatine bluish, then sordid-yellow 
‘with iodine.—Cromb, Grevillea, xviii. p. 69.—Lecanora symmicta 
Leight. Lich. Fl. ed. 3, p. 183 (excl. vars.). Lecanora varia 
£. symmicta Ach. Lich. Univ. (1810) p. 379; Mudd, Man. p. 150 
pro parte ; Cromb. Lich. Brit. p. 52 pro parte; Leight. Lich. Fl. 
ed. 1, p. 198 pro parte. 
May be recognized from its more immediate allies chiefly by the con- 
: QF 
