1916. Xo. 8. MONOGRAPH OF THE NORWEGIAN' PHYSCIACEAE. 55 



Crombie Brit. Lieh. (1894) P- 308 (as subspecies). Harmand Lieh. France 

 (1909) p. 635. Lettau Lieh. Thûr. (1913I p. 255. 



The margin of the apothecia crowned by numerous short 

 or long folioli. Thallus without or only with little pruina; the margin 

 of the laciniae more or less erenate or incised. Colour cervine or cervine 

 greyish. 



Our herbarium possesses one specimen of f. venusta from Croatia, 

 collected by Balmgartner, which is entirely conformable to the description 

 of AcHARius. The margin of the laciniae is so incised that the whole 

 thallus acquires a microphylline appearance and the apothecia are almost 

 hidden in the crown of folioli. Such specimens are unknown in Norway. 

 — Mr. Balmgartner has informed me that he cannot regard the vetiiista 

 as a proper species, and I am of the same opinion. 



Specimens of var. allochroa with more or less crowned apothecia and 

 nearly epruinose laciniae are frequent in Norway-, and some of them are 

 so conspicuous!}- crowned that they might be referred to f. ventista, 

 (Mosterhavn, Havaas and LvngeI, but all intermediate states are found. 



Nylander found a »stratum thalli corticale cellulosum« ^. Our spe- 

 cimen from Croatia has a cortex similar in structure to that of the tj'pical 

 Ph. pitlvenilenta. 



7- Physcia muscigena (Ach.) Nyl. 



Parmelia muscigena Acharils Lieh. Univ. (1810) p. 473. Synopsis 

 I1814I p. 212. 



Lichen mitscigenus Wahlenberg Flora Lapp. (1812) p. 422. 



Physcia pnhemlenta var. niuscigena Nylander Synopsis I (i860) p. 

 420. Th. Fries Lieh. Arct. (i860) p. 63. Nylander Lieh. Seand. (1861) 

 p. no. Kindt Bidrag til Kundskab om Trondhjems Lavvegitation. Kgl. 

 \'id. Selsk. Skr. (1880, edit. 1881I p. 29. Harmand Lieh. France (1909) 

 p. 636. Lynge Busk- og blad-laver Berg. Mus. Aarb. (1910) no. 9 

 p. 104. 



Physcia pulvoiilcnta subsp. muscigena Wainio Adjumenta I (1881) 

 p. 131. Arnold Jura (1885) p. 60. Crombie Brit. Lieh. I (1894) p. 309. 



Physcia muscigena Nylander Prodromus Lieh. Gall, (1857) p. 308. 

 Dalla Torre et Sarnth. Die Flechten von Tirol (1902) p. 157. 



* Nyl.\xder Synopsis 1. c. 



