I92I. No. 7. STUDIES ON THK LICHEN FLORA OF NORWAY. 1 45 



vin: Eide (B. L.), and Nestaasaasen (Hav. Lieh. Xorv. 63), \'oss: Bjorgum 

 (B. L.), and Lid (B. L.), Mjoltjell (B. L.). 



Hcd. Odalen: Sander (B. L.), Mntrand (B. L.), Kongsvinger (B. L.), 

 Hanestad (B. L.); V'eldre (Nordh.). O/)/. Lillehammer: Mesnalbssen (B. L.), 

 Ringebu (Somrft.), Brandbu (B. L.), Fluberg: Roen (B. L.), and Lia (B. L.). 



Supposed to be common or even abundant in the soutliern lowlands, 

 it ascends to the tree line, but it is not common (perhaps rare?) in sub- 

 alpine forests. 



On Conifers, more rarely on deciduos trees, also on wood, as roofs 

 of old houses, palings, and the like; on the coast also on rocks. 



If all the plants with the reaction 'K + C rubescens' were referred to 

 the olivctorina it would by far be the most abundant of this tribe in Nor- 

 way. More than - 3 of our entire material is 'K + C rubescens.' 



Apothecia (in spec, fert.) 6 — 7 mm. lata, subsessilia; receptaculum le- 

 viter rugosum, discus concavus \el dein subplanus, epruinosus, rugosus, 

 margo tenuis, integer vel radiatini ruptus. Cortex exterior mollis, facile 

 ruptus, parte exteriore obscuratus, o — 15 — 25 \}. crassus, hyphae corticis 

 indistinctae, (addito KOH) grosse articulatae, cortex interior quam in P. 

 soralifcra minus distinctus, 25 — 50 \l altus. Medulla arachnoidea, hvphae 

 tenues, adspersae, gonidia infra cortices glomerata, stratum subcontinuum 

 formantia, in ipsa medulla \alde dispersa. Hypothecium incoloratum, 12—15 V- 

 altum. Hymenium angustum, ca. 40 \j. altum, incoloratum vel superne dilute 

 flavescens, strato amorpho tenui tectum. Paraphyses (addito KOH) facile 

 discretae, sat validae, apice non vel parce solum incrassatae, indivisae, sep- 

 tatae. Asci numerosi, membrana apice mediocriter incrassata, 30 — 35 x 

 10 — 12 [x. Sporae ellipsoideae, 6-^9 <-3 — 5 [x. 



Assi J persistenter caeruleo-nigrescentes, gelatina hymenii dein sordide 

 decoloratur, medulla persistenter, sed dilute caerulescens. 



var. ceratea (Acn.) 



ALrrsh. Ski (B. L.), Ekeberg (H.), Lutvand (Moe), Abildso (Moe), 

 Grefsenaasen (Moe), Kolsaas (Kler), Vardekollen (Kiær), Minne (B. L.). 

 Vest/. Larvik: \'iksfjorden (B. L.), Fredriksvern (Norm.). Busk. Opkuven 

 (B. L.). 



Austagd. Lyngor (B. L.). Dybvaag (B. L.), Nergaren (B. L.), Vegusdal: 

 Kxikjon (Sør.). J^csfagd. Mandai: Risobank (B. L.). 



Hord. Lysekloster (B. L.), Granvin: Aasene (H.), \'oss: Bjorgum (B. L.), 

 and Graasiden (B. L.). Sogii. Krokvassætri (Lillef.). 



Hed. Matrand (B. L.), Solor: Haslemo (B. L.). (^/)/. Lillehammer: Mes- 

 nafossen (B. L.), Hadeland: Almenningen (B. L.), Nordre Land: Enger (B. L.). 



Sorfr.O). Dovre (W. Boeck). 



Nord/. Rodo: TJong (Norm.). 



Vid.-Selsk. Skr. L M.-N. Kl. 1921. No. 7. 10 



