140 LKCANO-LECIDEKI [bILIMBIA 



gelatine slightly bluish then wine-reddish with iodine. —Lecidea 

 albidocarnca Nyl. in Flora Ix. p. 469 (1877) ; Cromb. in Grevillea 

 vi. p. Ill ; Leight. Lich. Fl. ed. 3, p. 346. 



Similar to the precedinf? but differs in the large apothecia which 

 are pale-coloured from the beginning, and in the usually stouter 

 spores. 



Hah. On mica-schist rocks. — B. M. Ballynahinch, Galway (the 

 only locality). 



Var. albovirella A. L. Sm. — Thallus effuse, thin, subleprose, 

 continuous, bright-green, at times nearly evanescent, otherwise 

 as in the species. — Lecidea albovirella Nyl. in Flora Ix. p. 567 

 (1877) ; Cromb. in Grevillea vi. p. 112 ; Leight. Lich. Fl. ed. 3, 

 p. 356. 



Exsicc. Larb. Lich. Hb. without number. 



Hah. On a shady schistose rock of a ravine in a mountainous 

 district. — B. M. Above Lough Feagh, Connemara, Galway (the only 

 locality). 



Yar. alborubella A. L. Sm. — Thallus effuse, very thin, or 

 evanescent, whitish or greenish-white (K — , CaCl — ). Apothecia 

 small, convex, immarginate, yellow- or reddish-iiesh-coloured, 

 within colourless ; paraphyses slender, ciavate at the apices ; 

 epithecium and hypothecium colourless ; spores linea.r- or iusiform- 

 oblong, 3-septate, thinner than in the species, 0,014-21 mm. long, 

 0,002 mm. thick ; hymenial gelatine tawny-wine-reddish with 

 iodine. — Lecidea alhoruhella Nyl. in Flora Ixii. p. 205 (1879); 

 Cromb. in Grevillea vii. p. 28. 



N^'lander observes that while the thalline gonidia are normal 

 (glomerulose), there are also present hymenial gonidia consisting of 

 cylindrical erect syngonidia,— a not unfrequent occurrence in species 

 of this order. In the two specimens seen, which are very sparingly 

 fertile, the thallus is little visible, being for the most part overrun 

 by a Lejpraria. 



Hah. On calcareous rocks in a cave in a maritime locality. — B. M. 

 Derryclare, Connemara, Galway (the only locality). 



Subsp. chlorotropoides A. L. Sm. — Thallus effuse, very thin, 

 subleprose, greenish ( K — , CaCl — ). Apothecia minute, margined, 

 reddish-yellow, the margin usually darker ; perithecium violet in 

 thin section ; hypothecium often pale-violet ; paraphyses sub- 

 discrete, ciavate at the apices ; spores fusiform-oblong, 1-3- 

 septate, 0,014-20 mm. long, 0,002-3 mm. thick; hymenial 

 gelatine bluish, the asci wine-red with iodine. — Lecidea chloro- 

 tropoides Nyl. in Flora Ix. p. 567 (1877); Cromb. in Grevillea 

 vi. p. 112 ; Leight. Lich. Fl. ed. 3, p. 346. 



Subsimilar to the species, but differs in the colour of the apothecia 

 and in that of the excipulum and hypothecium. In our specimen 

 collected by Larbalestier the few apothecia are ochraceous or somewhat 

 reddish-yellow and immarginate. The spores are narrow and become 

 3-septate when mature. One of the two specimens from Kylemore is 



