I-ECAXORA.] LtlCANO-LKCIDEKI. 413 



Northumberland. Killin, Perthshire; Durris, Kincardineshire ; Crathie 

 and Glen Dee, ]}raemar, Aberdeenshin* : Rothiemurchus, Inverness-shire. 

 Carrigaline, co. Cork; Killariiey, co. Kerry. 



Form pleorytis Ach. Syn. (1814) p. IGl (excl. syn.).— Thallus 

 determinate, thickish, granulate, yellow. Apothecia crowded, con- 

 colorous, the thalliiie margin inflexi-d and crenulate. — Cromb. Gre- 

 villca, xviii. p. G'J. — rarmelia varia (3. pleorytis Ach. Meth. (1803) 

 p. 178. 



Differs chiefly in the character of the thalline margin, which is as if 

 incised. This, however, is less visible in the young apothecia of the only 

 British specimen (fragmentary). 



Hah. On old pales in an upland district. — Dvftr. Only verv sparingly 

 in the S. Grampians, Scotland. — B. M. : Lawers, Killin/Perthshire. 



IIG. L. conizaea Xyl. Flora, 1872, p. 249.— Thallus effuse, 

 thickish, leproso-pulverulent, whitish-yellow (K + yellow, CaCl — ), 

 Apothecia lecanorine, small or moderate, plane or somewhat convex, 

 pale or pale flesh-coloured, at length brownish ; the thalline margin 

 entire or flexuose, somewhat thickish, pulverulent ; spores ellipsoid, 

 0,010-14 mm. long, 0,0U45 mm. thick ; hymenial gelatine bluish, 

 then tawny-yellow with iodine. — Cromb. Trans. Essex Field Club. 

 iv. p. t)4. — Lecanom varia var. conizira Cromb. Lich. Brit. p. 52 ; 

 Leight. Lich. Fl. p. 193. Lecanora eA'palhns var. /3. conizcea Ach. 

 Lich. Univ. (1810) p, 374. Lecanora hitescens Leight. Lich. Fl. 

 ed. 3, p. 184 pro parte. Lecanora sarcopis subsp. Jiomopis {non Xyl.) 

 Cromb. Journ. Bot. 1873, p. 133. Lecidea farinaria Borr. Eng. 

 Bot. Suppl. t. 2727. — Brit. Exs. : Cromb, n, 163 ; Leight. n, 378. 



Well distinguished from L. varia by the paler, leprose thallus and the 

 pulverulent margin of the apothecia. In a young state the thallus is 

 thinnish, but subsequently becomes rather thick and spreads extensively. 

 The apothecia are numerous when present (for the plant is often sterile"), 

 and become dark-brown and flexuose in age. 



Hab. On old pales, chiefly oak, in lowland and upland disti'icts. — Distr. 

 Local in S., Central, W. and N. England, but abundant where it occurs. 

 — B. M. : Alboume, Sussex ; Finchley, Middlesex ; Reigate, Surrev ; 

 Epping Forest, Essex ; Elstree, Herts ; Penshurst, Kent ; Gopsall Park, 

 Leicestershire ; Stableford, Shropshire ; L'rpeth VaUey, Durham ; Asbv, 

 Cumberland. 



117. L. conizaeoides Xyl. ex Cromb. Journ. Bot. 188-5, p. 195, — 

 Thallus eft'use, somewhat thickish, leprose or subleprose, pale- or 

 whitish-yellow (Kf-|- yellowish, CaCl— ). Apothecia lecanorine, 

 submoderate, innato-sessile, pale-yellow or livid-brownish ; the thai- 

 line margin persistent, crenulate and often inflexed ; spores oblong, 

 0,009-11 mm. long, 0,005-7 mm. thick; hymenial gelatine bluish, 

 then sordid with iodine. 



Intermediate between L. varia and L. conizcea, to which latter the 

 thallus is almost similar, though the spores are more turgid. From L. 



