1 92 1. No. 7. STL'DIES OX THE LICHEN FLORA OF NORWAY. 1 95 



receptaculi 30 — 65 [j. crassus, incoloratus vel suis locis flavo-inspersus et 

 earn ob causam plus minusve impellucidus, hyphis conglutinatis, pachyder- 

 maticis, perpendicularibus, septatis, 7 — 8 [j- crassis formatus, in corticem 

 infrahypodiecialem, 25—35 [i. altum transiens, qui hyphis in omnes partes 

 percurrentibus — sed vulgo hypothecio p. m. perpendicularibus — et minus 

 pachydermaticis formatus est. Hyphae medulläres tlavo-adspersae, 4—6 [x 

 crassae. Gonidia praecipue infra cortices adsunt, sed etiam tota medulla 

 disperse inclusa. Hvpothecium (verum) 10 — 13 [x altum, omnino incolora- 

 tum, a cortice infrahvpotheciali minus distincte limitatum. H3^menium an- 

 gustum, 50 — 55 [J. altum, strato amorpho, 4 — 5 ;x crasso, tectum, non in- 

 spersum, superne flavo-fuscescens vel dilute rufo-fuscescens, ceterum incolo- 

 ratum. Paraphvses septatae, indivisae, vel rarius ramosae, apice capitato- 

 incrassatae (3 — 4 ;x). Asci octospori, 38 — 42 [i longi et 10 — 12 [j. crassi, 

 membrana apice valde incrassata. Sporae pellucidae, late ovales, 6 — 8 [x 

 longae, 4 — 5 [x crassae. 



React. Gelatina hvmenialis J e caeruleo mox sordide decoloratur, 

 asci tamen subpersistenter caerulescentes. Asci valde numerosi, fere con- 

 tigui, et eam ob causam: eo crassior sectio, eo persistentior color hymenii 

 jodetica videtur. Hvpothecium verum J dilutissime sed persistenter caeru- 

 lescens, zinco chloreto cum jodi distinctius caerulescens, eodem reagentio 

 partes exteriores hymenii caeruleo-nigricantes, interiores et cortex infra- 

 hvpothecialis rufo-fuscescens colorantur. 



var. terrestris Schaer. 



AcHARiLS proposed the Tilcsii as a proper species, related with C. 

 iiniipcrina and C. nivalis; separated from the former by more lacerato- 

 incise, accordingly narrower laciniae, which are also more lacunose than in 

 C. jiDiiperitm, which has flatter and broader laciniae. The Tilcsii is sepa- 

 rated from C. nivalis by the denticulate margin and the thallus, which is 

 less crisp. 



\"ar. terrestris Schaer. has been distributed in several exsiccata: Hepp 

 No. 840, Malme 3, Rabenhorst 193, Schaerer 20. It is also separated 

 from the type by more lacerate thallus, more erect laciniae, and — like the 

 above variety — by its very sparingly developed apothecia; the type of 

 C.juniperina is nearly always fertile. The type is found on the branches 

 of shrubs, almost exclusively of Jiiniperiis, the variety on earth. 



A botanist who has seen the type and the variety on the mountains, 

 will be greatly disposed to follow Acharics, considering them to be two 

 proper species. I have, however, been unable to do so, for the type as 

 well as the variety present variations, which approach them to each other. 



As to the difference between the two formae Nylander writes (Lieh, 

 Scand. p. 83): 'var. terrestre (Schaer.) Nyl. . . . Hue pertinet C. Tilesii 

 AcH. Syn. p. 228' ; later he referred the Tilesii to C. nivalis, the terrestris 



