368 LICHENACEI. [LECANORA. 



Physcia parietina $. laciniosa et $. concolor Mudd. Man. pp. 113, 

 114. Parmelia parietina e. laciniosa Duf. in Fr. Lich. Eur. (1831) 

 p. 73. Physcia candelaria Mudd, Man. p. 114. Lecanora candelaria 

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

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

 p. 167. Squamaria candelaria Sm. Eng. Fl. v. p. 194. Psoroma 

 candelarium Gray, Nat. Arr. i. p. 445. Lichen candelarias 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 concolor Dicks. 

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

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

 species belonging to different genera and cannot be retained. 

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

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

 Mt. Dor. p. 65, Nylander proposes the name concolorans, bat, as he 

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

 original specimens, is entirely 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 British specimens. Var. granulosa Leight. //. cc. 

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

 rence. 



Hab. On trunks of trees and on old pales, rarely on walls, in maritime, 

 lowland, and uplaud districts. Distr. General and common in Great 

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

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

 thamstow and Epping Forest, Essex; Pensh urst Park, Kent; Lyndhurst, 

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

 tershire; Windsor 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 Killin, Perthshire; Durris, 

 Kincardineshire ; Abergeldie, Braemar, Aberdeenshire ; Fort William 

 and Rothiemurchus, Inverness-shire. Near Limerick ; Blackrock, ne;ir 

 Cork ; Killarney and Dunkerron, co. Kerry. 



24. L. vitellina Ach. Lich. Univ. (1810) p. 403. Thallus effuse, 

 suhareolate, granulose, vitelline or yellow-vitelline; granules minute, 

 crenate or sublobulate or verrucoso-glomerate, usually crowded 

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

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

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

 1-septate (or apically 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 vitelliiws Ehrh. Exs. (1785) n. 155; Dicks. Crypt, fasc. iv. 

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



