BRITISH LICHENS

LECIDEA LECIDEACElE 23
line. The apothecia are more or less scattered, becoming somewhat
difform in age.
Hab. On the trunks of old trees, chiefly oaks, in wooded upland
districts.-Distr. Not uncommon in most parts of England, rare m
N. Wales, Ireland, and the Channel Islands; not seen from Scotland.
-B . .JJ1. Rozel, Island of Jersey; Ickworth, Suffolk; Epping Forest
and Hadleigh Woods, Essex; Shere, Surrey; W.rotham, Kent; Clayton,
Withyham, Henfield, Wakehurst Park. Tilgate and St. Leonard's
Forest, Sussex; New Forest, Hants; Torquay, Lustleigh and near
Kingskerswell, Devon; Downton, WIlts; Oakley Park, near Cuencester,
Gloucestershire; near the Lodge, Herefordshire; Crowle Road, near
Worcester and Ledbury, Worcestershire; Garn Dingle, Denbighshire;
Aston, Warwickshire; Royston Hill, The Wrekm, Gobowen, and
Buildwas, Shropshire; Easby Wood, Cleveland, Yorkshire; near
Bishop Auckland, Durham; Antrim; Castle Bernard Park and near
Riverstown, Cork; Glandarry Wood and Dugort, Achill Island; Deer
Park, Killarney, Kerry; near Belfast, Antrim.
22. L. ijenrica Larb. ex Nyl. in Flora Ix. 563 (1877).-Thallus
white, tartareous, thickish, contmuous, smooth, slightly rimulose
(K + yellow, CaCI + yellow). Apothecia pale-yellow-fleshcoloured,
scattered, sessile, plane or convex, with an obtuse
margin or almost immarginate; hypothecium colourless; paraphyses
distinct, stout, colourless at the apices; spores 4, 6 or 8 in
the ascus, ellipsoid or fusiform-ellipsoid, 15-20 p.long, 6-7 p. thick;
hymenial gelatine blue then yellowish, the asci violet-yellow, with
iodine. Spermatia arcuate, 18-22 p. long, ·5 p. thick.-Cromb. in
Grevillea vi, 111; Leight. Lich. Fl. ed. 3, 298.
Exsicc. Larb. Lich. Hb. n. 171.
A specimen from New Galloway agrees with the above except that
the apothecia are crowded and sublobate and the spores smaller
(12 I-' x 61-'), but they are somewhat immature.
IIab. On rocks in shady localities. B. M. New Galloway, Kircudbright;
ravine near Kylemore, Connemara, Galway.
23. L. phreops Nyl. in Not. Sallsk. Faun. & Fl. Fenn. iv.
5 (1858).-Thallus tartareous, determinate, thickish, smooth,
continuous, irregularly rimulose, white or greyish-white
(K + yellowish, CI1Cl-); hypothallus whitish. Apothecia small,
innate, angulose, plane, immarginate, brown or reddish-brown;
paraphyses slender, crowded, slightly reddish; °hypothecium
reddish; spores fusiform-ellipsoid, 9-17 p. long, 5-6 p. thIck;
hymenial gelatine deep blue with iodine.-Salw. in Trans. Bot.
Soc. Edin. vii. 554; Cromb. Lich. Brit. 65; Leight. Lich. Fl. 296.
Lecanora phmops Th. Fr. Lich. Scand. 287 (1874); Leight. Lich.
Fl. ed. 3, 181.
Exswc. Larb. Licp. Hb. n. 17.
Frequently classified under Lecanora sect. Aspicilia near to L.
lacustris, which It resembles in the innate apothecia and in the smooth
\haI1us largely due, as in L. lacustris, to the habitat. From the general
habIt and structure it agrees more nearly with the Biatoras. The