1 92 1. No. 7. STUDIES 0.\ THE LICHEN FLORA OF NORWAY. 1 67 



and the pycnides are better seen. — The pycnoconidia are straight, cylin- 

 drical, 7 — 9 [I long. 



Pannelia vcrntciilifcra Xvl. in Merrill Lieh. Exsic. 232 is Parnielia 

 siibaitrifcra Nyl. 



^3. Parmelia scortea Ach. 

 Map \'III, 3. 



0s(f. Prestebakke (B. L.I, Fredriksstad: Græsvik (B. L.l, Oveneen (B.L.), 

 Jeleen (B. L.l, Spydeberg (Høeg). Akersh. Drebak (B. L.), Ski (B. L.l, 

 Kristiania and Åker frequent (Moe), Bærum (B. L.), Asker (B. L.l. Vestf. 

 Holmestrand (Norm.), Horten (Nordh.), Nettere (B. L.), Tjomø (Nordh.), 

 Hedrum (Norm.), Brunlanes (Høeg). 



Tclciii. Skien (Norm.I. Rog. Rægefjord (H.), Sogndalsstranden (H.). 



Hord. Moster (H.l, Huglen (M. N. Bl.), Bergen (H.), Strandebarm: Sko- 

 gesal (Lillef.I, Noreimsund (H.), Granvin: Eide (H.), Ullensvang (H.l, Manger 

 (H.). Sogn. Stat: Selje (H.l, Lerdal (Norm.I. 



f. borealis (Norm.) Lynge. 

 Paniiclia tiliacca f. borealis (et f. arctica) Norm. in herb. 



Thallus coriaceus, subnitidus, laciniae subcentritugae, adpressae, isidia 

 valdc dispersa, nigro-capitata, stipitata vel sessilia. Apothecia non visa. 

 Pycnoconidia — ut in typo — cylindrica, recta, 7 — 8 ;/.. 



Ad scopulas marinas Norvegiae occidentalis et septentrionalis. 



Rog. Finde (M. N. Bl.), Stavanger (M. N. Bl.), Nerstrand (M. N. Bl.I. 



Hord. Strandebarm (Lillef.). Sogn. Flore (Norm.), Stat (H.l. 



Nordl. Selsø (Norm.I, Grenna (Norm.), Bodø: Gronholmen (Somrft.), 

 Kjærringo (Norm.I, Lofoten: Reimebring (Norm.). 



The isidia are so poorly developed that they might be mistaken for 

 hypertrophied pycnides. The laciniae being also appressed the forma might 

 be referred to Pannclia tiliacea. But the coriaceous thallus, and the isidia 

 which are present in every specimen — however sparingly, convinced me 

 of its affinity with Parmelia scortea. 



Specimens intermediate between this f and the type, were collected 

 on maritime rocks at Moster (Ha va as and Lynge 1. 



— Lindsay collected saxicolous specimens at Kristiania (Journ. Lni. 

 Soc. Bot. vol. IX, 1867, p. 37 7 1. 



In his Methodus (1803I p. 215 Acharils distinguishes between P. 

 tiliacea (Hoffm.) and P. scortea AcH. as two distinct species. Lichen tilia- 

 ceus Hoffm. Enum. (1784) p. 96 includes either species which is distinctly 

 seen from his description: Toliola . . . furfure vel pulvere concolore ubique 

 conspersa", and p. 97: 'Scutellae in plantis pulverulentis, rariores sunt' ; he 



