104 LECANO-LECIDEEI [lECIDEA 



Ann. Sci. Nat. ser. 3, xvii. p. 116, 1. 16, fig. 27 (1852) ; Lindsay 

 in Microscop. Journ. v. t. 4, ff. 15, 16 ; Mudd Man. p. 225. 

 Exsicc. Leight. n. 281. 



Bab. Parasitic on various Parmelice — e.g. P. saxatilis i. fur- 

 furacea, P. conspersa Tar. stenophylla, P. fiiUginosa, in maritime 

 and upland districts. — Distr. Rather local in S.W. England, Wales, 

 the Highlands of Scotland, and S.W. Ireland ; not seen from the 

 Channel Islands. — B. M. Near Lamiceston, Cornwall; near Aber- 

 gavenny, Monmouthshire ; Barmouth and Dolgelly, Merioneth ; Bar- 

 caldine and Appin, Argyll ; Craig CaJlisich, Pass of Leny and Dnnkeld, 

 Perthshire; Portlethen, Kincardineshire; Morrone, Braemar, Aber- 

 deenshire ; Dnnkerron, Kerry. 



197. L. cladoniaria Nyl. in Mem. See. Cherb. v. p. 339 

 (1857). — ThaUus absent. Apothecia minute, opaque, subconvex, 

 slightly prominent, rngulose, black, internally dark or con- 

 colorous ; paraphyses moderate ; hypothecium slightly blackish 

 beneath; spores oblong, 0,010 mm. long, 0,0035 mm. thick; 

 hymenial gelatine bluish then sordid with iodine. — Cromb. Lich. 

 Brit. p. 94 ; Leight. Lich. Fl. p. 358 ; ed. 3, p. 388. Specimen 

 not seen. 



In this country the apothecia are known to occur only on the 

 thallus of Cladonia helMdiflora, though they were originally detected 

 on that of Cladina unciaMs ; in both cases they give the host a 

 deformed and verrucose-rugose aspect. 



Hah. Parasitic on Cladonia hellidiflora in an upland situation. 

 — Distr. Kelly's Glen, near Dublin. 



198. L. imponens Leight. in Trans. Linn. Soc. ser. 2, i. 

 p. 238, t. 32, figs. 7 & 8 (1876).— Thallus obsolete. Apothecia 

 black, minute, numerous, scattered, plane or subconcave, the thin 

 margin disappearing ; hypothecium colouriess ; paraphyses stout, 

 coherent, blackish at the apices; spores ellipsoid, 0,014—15 mm. 

 long, 0,0055 mm. thick. 



Sdb. Parasitic on the thallus of Lecanora folyiropa. — B. M. Fort 

 Hill, near Fishguard, Pembrokeshire (the only locaUty). 



199. L. epiphorbia Stirton in GreviUea ii. p. 108 (1873). — 

 " Apothecia resemble externally and internally those of L. 

 (BueUia) parmeliarum, except that the paraphyses are neither 

 thickened nor darker-coloured at their apices. The spores are 

 colourless, or present, in a few instances, a faint tinge of yellow, 

 and the reaction on the hymenial gelatine by means of iodine 

 shows a deep vinous red without any preceding coerulescent 

 tints, instead of being negative as in L. parmeliarum. This 

 lichen bears the same relationship to L. parmeliarum that L. 

 solorinaria does to L. oxyspora." — Leight. Lich. Fl. ed. 3, p. 388. 

 Specimen not seen. 



Crombie (Journ. Bot. xii. p. 148 (1874) ) suggests that this may be 

 Biatorina Wallrothii, but this is denied by Stirton (GreviUea iii. p. 25). 



