368 LicnEXACEi. [lecanorv. 



— Physcia parietiiia c. laciniosa et <p. concolor ^Mudd. !Man. pp. 1 13, 

 114. Pa nndia parietiiia e. laciniosa Duf. in Fr. Lich. Eur. (1831) 

 p. 73. Physcia candelaria Mudd, Mau. p. 114. Lecanora canddaria 

 Hook. Fl. Scot. ii. p. 51 pro parte ; Tayl. in Alack, Fl. Hib. ii. 

 p. 139 ; Cromb. Lich. Brit. p. 48 ; Leight. Lich. FL p. 182, ed. 3, 

 p. 167. Squamana candelaria Sm. Eag. Fl. v. p. 194. Psoroma 

 candelarium Gray, Xat. Arr. i. p. 445. Lichen candelaria^ Huds. 

 Fl. Angl. p. 444 pro parte ; Lightf. Fl. Scot. ii. p. 811 pro parte; 

 "With. Arr. p. 27 pro parte ; Eng. Bot. t. 1794. Lichen coiicolor Dicks. 

 Crypt, fasc. iii. p. 18, t. ix. f. 8 pro maxima parte. — Lichen cande- 

 larius of Linnaeus and the older authors is a nomen vagum including 

 species belongiiig to different genera and cannot be retained. 

 Lichen concolor Dicks, pro parte must also be rejected in order to 

 prevent confusion with Lecanora concolor Earn. In Lamy, Lich. 

 Mt. Dor. p. 65, Xylander proposes the name concolorans, but, as he 

 states, Lich. Scand. p. 108, that Parmdia laciniosa Duf., according to 

 original specimens, is ei.tirely this species, Dufour's name must be 

 adopted. — Brit. Exs. : Leight, n. 12 ; Larb. Lich. Hb. n. 53. 



Closely resembles states of Physcia lijchnea, with which it has often 

 been confounded. It is, however, well distinguished by the absence of 

 any reaction and by the number of the spores. The apothecia are not 

 usually present in the Biitish specimens. Var. fjramdusa Leight. //. cc. 

 Exs. n. 12, is only a stunted, more granidose state, of common occur- 

 rence. 



Hab. On trunks of trees and on old pales, rarely on walls, in mai-itime, 

 lowland, and upland districts. — Distr. General and common in Great 

 Britain ; apparently rare in Ireland and the Chanuel Islands. — B. M. : 

 St. Lawrence, Is^land of Jersey; Vale Castle, Island of Guernsey. Wal- 

 thamstow and Epping Forest, l]ssex ; Pensburst Park, Kent; Lyndhurst, 

 New Forest, Hants; near Penzance, Cornwall; Stowell Park, Glouces- 

 tershire ; AViudsor Great Park, Berkshire ; Cherry Hinton, near (Cam- 

 bridge ; Berwick, near Shrewsbury, Shropshire ; near Barmouth, Merio- 

 nethshire ; Stokesley, Yorkshire; near Keswick, Cumberland; Levens 

 Park, "Westmoreland. Doune Castle and Kilhn, Perthshire ; Durris, 

 Kincardineshire; Abergeldie, Braemar, Aberdeenshire; Fort "William 

 and Ifothiemurchus. Inverness-shire. Near Limerick ; Blackrock, uenr 

 Cork ; Ivillarney and Dunkerron, co. Kerr}-. 



24. L. vitellina Aeh. Lich. Univ. (1810) p. 403.— Thalliis cflruso, 

 subareolate, granulosc, vitelline or yellow-vitelline ; granules minute, 

 creuate or sublobulate or verrucoso-glomerate, usually cro"wded 

 (K — ). Apothecia submoderate, sessile, plane or convex, tawny- or 

 livid-yellow (K — ), the thalline margin entire or granulato-crenu- 

 late ; spores (12-24-32noe) ellipsoid or oblong, simple or obsoletely 

 1-septate (or apicallv 2-locular), 0,008-15 mm. long, 0,004-6 mm. 

 thick.— Cromb. Lich. Brit. p. 48 ; Leight. Lich. Fl. p. 180, ed. 3, 

 p. 186 ; Sm. Eng. Fl. v. p. 192 ; Hook. Fl. Scot. ii. p. 49 ; Tayl. in 

 Mack. Fl. Hib. ii. p. 138. — Callopisma vitellinum Mudd, Man. p. 135. 

 Lichen vilelli)nis Ehrh. Exs. (1785) n. 155; Dicks. Crypt, fasc. iv. 

 p. 23; Eng. Bot. t. 1792. To this is also referable var. rorrnscans 



