. jae,” 
542 CYCLOCARPINEX [LECANIA 
3. L. leucospeirea A. L. Sm.—Thallus of minute subcrenate 
scattered or massed squamules, adnate, often somewhat granular, 
white (K—, CaCl—). Apothecia minute, plane, the disc brown, 
the thalline margin entire; paraphyses slender, yellowish-brown 
at the apices ; spores oblong or ovoid-oblong, 1-septate, 11-13 p 
long, about 3°5 p thick.—Lecanora leucospeirea Nyl. in Flora li. 
p. 473 (1868); Cromb. Lich. Brit. p. 48 & Monogr. i. p. 393 ; 
Leight. Lich. Fl. p. 227; ed. 3, p. 218. 
Hab. On gravelly soil in maritime districts ——Distr. Rare in the 
Channel Islands and E. Ireland.—B. M. Boulay Bay, Jersey; Howth, 
Dublin. 
§ ii. EuLecanta Stizenb. in St. Gall. Ber. Nat. Ges. iii. p. 170 
(1862).—Thallus crustaceous. Apothecia frequently becoming 
immarginate. 
Spores mostly 1-septate. 
Thallus determinate or subdeterminate. 
4, L. Ralfsii A. L.Sm.—Thallus subdeterminate, cartilaginous- 
areolate or gibbous, smooth, leaden-grey or dark olive-green 
(K—, CaCl—). Apothecia small, rather prominent, the disc 
plane, brownish or dark reddish-brown, the margin thin, dis- 
appearing ; paraphyses subdiscrete, slender, septate, broader and 
brown at the apices; spores large, oblong-ellipsoid, sometimes 
slightly constricted at the septum, 18-23 p long, 6-9 p thick ; 
hymenial gelatine blue then violet coloured with iodine.— 
Lecidea Ralfsii Salw. in Ann. Penz. Nat. Hist. Soc. ii. p. 145 
(1853). DL. Muddii Salw. ex Mudd Man. p. 179 (1861); 
Cromb. Lich. Brit. p. 74 (1870); Leight. Lich. Fl. p. 315. 
Biatorina Muddii Mudd Man. p. 78 (1861). Lecanora Ralfsii 
Cromb. in Grevillea ii. p. 13 (1873) & Monogr. i. p. 393 ; Leight. 
Lich. Fl. ed. 3, p. 220 (excl. syn. LD. actza). 
Eazsicc. Johns. n. 132 ; Larb. Lich. Hb. n. 154. 
Characterized by the dark-green thallus and large spores; it is fre- 
quently associated with L. prosechotdes. Biatorina jejuna A. Li. Sm. 
Monogr. ii. p. 114, with the synonyms Lecanora jejuna and 
Lecidea subdiluta are perhaps identical with this lichen as stated by 
Crombie (I. c.), but differ in the thinner thallus and light-coloured 
biatorine apothecia. 
Hab. On siliceous maritime rocks.—Distr. Rather rare round the 
sritish coasts.—B.M. Jersey; St. Mary’s, Scilly; the Lizard and 
near Penzance, Cornwall; Barrowmouth, Cumberland; Barcaldine, 
Argyll; Bay of Nigg, Kincardineshire; Killery Bay, Connemara, 
Galway. 
5. L. actwa B. de Lesd. Lich. Dunk. p. 178 (1910).—Thallus 
determinate, rather thick or thin, unequal, deeply cracked, 
greyish-leaden coloured, bluish and thinly white fimbriate at 
the circumference (K—, CaCl—). Apothecia small, somewhat 
