biatorella] lecideace^ 109 



orange-red, the margin thin, pale, at length evanescent ; para- 

 physes very slender, discrete, yellowish ; hypotheciura pale ; 

 spores globose, 0,0025—35 mm. in diameter ; hymenial gelatine 

 deep-blue with iodine. — -Mudd Man. p. 191 (excl. var.). Lecidea 

 resince Fr. Obs. Myc. i. p. 180 (1815); Nyl. in Act. Soc. Linn. 

 Bord. ser. 3, i. p. 363 ; Cromb. Lich. Brit. p. 76 ; Leight. Lich. 

 Fl. p. 354 ; ed. 3, p. 383 (excl. form) & in Grevillea i. p. 58, t. 4, 

 f. 9. Peziza resinse Fr. Syst. Myc. ii. p. 149 (1822); Cooke 

 Handb. Brit. Fung. p. 706. 

 Exsicc. Leight. n. 277. 



A plant variously referred by authors to Lichens or to Fungi. If 

 the thallus, as described above, be proper, it belongs to the former as 

 it contains gonidia. "When the thallus is absent, often there is 

 sparingly visible a soffc fungoid mycelium, which would seem to 

 indicate that it is a Peziza. It is retained here from its apparent 

 affinity to other species of Biatorella. The spermogones, con- 

 colorous with the apothecia, sometimes occur by themselves, when 

 they are known as Sphoivia resince Fr. 



Hah. On resinous bark and decorticated trunks of firs in hilly and 

 mountainous districts. — Distr. Seen from only a few scattered 

 localities in Great Britain ; not recorded from Ireland. — B. M. Shiere, 

 Surrey ; Bettws-y-Coed, Carnarvonshire ; Trefriw, Denbighshire ; 

 Oliffifigg, Cleveland, Yorkshire ; Staveley, Westmoreland ; Craig 

 Calliach and Ben Lawers, Perthshire ; Countesswells Woods, near 

 Aberdeen ; Rothiemurchus Woods, Invernessshire. 



5. B. difformis Wainio in Helsingf. Faun. & Fl. Fenn. Medd. 

 X. p. 143 (1883).— Thallus indistinct or absent (K-, CaCl-). 

 Apothecia small, at first concave and thinly margined, becoming 

 slightly convex and immarginate, black, opaque, concolorous 

 within ; paraphyses discrete ; epithecium and hypothecium brown ; 

 spores globulose, 0,0020-25 mm. in diameter ; hymenial gelatine 

 and asci deep-blue with iodine. — Peziza difformis Fr. Syst. Mycol. 

 ii. p. 151 (1823). Lecidea difformis Nyl. Peziz. Fenn. p. 68 (1868) ; 

 Oromb. in Grevillea xxii. p. 59. L. resinse f. cicatricicola Leight. 

 in Grevillea i. p. 59, t. 4, f. 9, c, e, g, k (1872) & Lich. Fl. ed. 3, 

 p. 383 ; Cromb. in Grevillea Z. c. 



Differs from the preceding in the colour of the apothecia and 

 hypothecium and in the rather smaller spores. The thallus, described 

 by Leighton as being brownish, greenish-brown, or purplish, is 

 evidently foreign ; it grows intermixed with B. resince. The sper- 

 mogones, not unfrequent, are black. 



Hab. On resinous bark of firs in upland wooded districts. — Distr. 

 Seen from only two localities in England and Wales ; no doubt 

 to be detected elsewhere. — B. M. Shiere, Surrey ; Bettws-y-Coed, 

 Carnarvonshire. 



6. B. Morio Mudd Man. p. 192 (1861) pro parte.— Thallus 

 greyish-black, areolate, the areolae blackish or yellowish-copper- 

 coloured, plane, angular, somewhat shining, radiate-plicate at 

 the circumference, hypothallus brownish-black. Apothecia minute, 



