346 CYCLOCARPINEE [LECANIA 
10. L. spodomela A. L. Sm.—Thallus effuse, thin, subleprose, 
areolate, greyish, or greyish-brown (K —, CaCL —). Apothecia 
small, the disc blackish, the thalline margin light-grey, sub- 
crenulate ; paraphyses slender, brown and septate at the clavate 
tips, surmounted by a blackish epithecium, spores ellipsoid, 
11-16 » long, 6-7 » thick ; hymenial gelatine blue with iodine.— 
Lecanora spodomela Nyl. in Flora lix. p. 572 (1876) and Ixix. 
p. 101 (1886) ; Cromb. in Grevillea v. p. 106 (1877) & Monogr. i. 
p- 394; Leight. Lich. Fl. ed. 3, 221. 
The thallus is obscured by a dark growth of blue-green alge ; but 
apothecia are abundant and well developed. The paraphyses fre- 
quently show a dark line over the tip like those of L. prosechoidiza. 
Hab. On maritime sandstone rocks.—Distr. Rare in W. Ireland.— 
B. M. Killery Bay and Kylemore Lake, Connemara, Galway. 
11. L.atrynioides Knowles in Sci. Proc. Roy. Dublin Soe. xiv. 
p. 130 (1913).—Thallus greyish, coarsely areolate, thin, effuse ; 
hypothallus dark. Apothecia crowded and often angulose, *5 to 
1 mm. in diameter, the disc dark reddish-brown, becoming 
convex, margined when young, the margin thin, whitish, entire 
or subcrenulate, subpersistent ; paraphyses subdiscrete, septate, 
clavate and blackish-brown at the tips ; spores ellipsoid, occasion- 
ally constricted at the septum, sometimes slightly curved, 
10-14 » long, 4-6 p» thick; hymenial gelatine deep blue then 
violet with iodine. Spermogones with slender arcuate spermatia 
borne on the tips of simple sterigmata. 
With a general resemblance to Lecanora atrynea (L. cenisia var. 
atrynea) and growing in similar situations. 
Hab. On schistose maritime rocks about high spring tide-level, at 
Red Rocks, Howth, Dublin. 
12. L. cesia A. L. Sm.—Thallus subdeterminate, thinnish, 
tartareous, granulate and  areolate-diffract, darkish czsious 
(K + CaCl —); hypothallus white. Apothecia moderate in 
size, depressed, plane or convex ; epithecium dark csio-pruinose, 
the margin prominent, white-sorediate and _ flexuose-crenate ; 
paraphyses slender, conglutinate, branched ; spores 8 in the ascus, 
colourless, oblong-ellipsoid, 1-septate ; hymenial gelatine deep 
blue with iodine.—Lecanora cxsia Johns. exs. n. 326 (1900). 
Eaxsicc. Johns. n. 326, 
A maritime species. Johnson was unable to find the spermogones. 
There is only a small specimen, but it seems to show that the dark 
colour of the thallus is due to blue-green alge. The gonidia are small, 
about 7-8 » in diameter. The paraphyses are slender, very crowded 
and undulate, entirely colourless, but the epithecium of dark granules. 
The spores are usually about 15 » long and 5-6 p» thick, but vary in 
length, 10 » to 17 » or rarely longer. The apothecia are rather small 
but sometimes conglomerate, with farinose white margins. 
Hab. On avenaceous rocks.—B. M. Hudshead near Berwick-on- 
Tweed. 
