86 BERNT LYNGE. M.-N. Kl. 



later insperse stratum. Hymenium at the exterior part yellowish or 

 yellowish-brown, otherwise uncoloured, no — ^30 fi high. Paraphyses at 

 their apices capitato-incrassate (4— 5/<), and constrictedly septate, unbran- 

 ched or rarely with a few short branches. Asci 80 — 85// long, 15 — 17« 

 thick, octosporous. Spores variable, type regularly ellipsoidical with roun- 

 ded apices. On an average they are not thicker than half the length 

 (average size of all measured spores: 21,41/« long, 9,47/« thick), but broa- 

 der spores are frequently seen (e. g. 17X11,")' Cell rooms usually 

 angular, stretched across of the spore, or like a sand-glass, the septum is 

 thick, the canal distinct. Deformed, shrunk spores are more frequent than 

 in other Physciae. Size: 17 — 26,3 ./< long and 7,9 — 13.4," thick. Colour 

 as usual, 



Pycnides small, globose, 90 — 95 a in diam. Perifulcrium dark around 

 the ostiolum, otherwise uncoloured. Pycnoconidia small, narrowly ellipsoi- 

 dical: 2,5—3,5« long, 0,8 — \a thick. 



React. The coloured part of the medulla purple by KOH, other- 

 wise the thallus is neither coloured by KOH nor by CaCUO^. Hymenium first 

 blue then deep red by j, the blue colour of the asci subpersistent, 



Hab. In Norway it is only recorded as saxicolous. It prefers moist 

 rocks and stations with an ample supply of nitrogen. Frequently asso- 

 ciated with Ph. lithotca. 



Loc. Recorded only from a few stations in our country, evidently 

 more frequent in Southern than in Northern Norway. Southeastern Nor- 

 way: Ringebu (Lynge), Toten (So.mmerfelt), Gjeilo (Lynge) ; Southern and 

 Western: Lyngør (Lynge), Granvin, plentiful and well fertile (Havaas), 

 Gjøra in Sundalen (Havaas), Veblungsnes and Skiri in Romsdalen (Hav- 

 aas). Trondhjem district: Trondhjem (Kindt), Opdal (Havaas). Northern 

 Norway: Harstad (Norman). 



Many authors have referred Ph. endococcina to Ph. obscura or to Ph. 

 lithotea, and with good reason, for the coloured medulla is occasionally 

 only found in some laciniae, and is absent in others of the same specimen. 



15, Physcia sciastrella (Nyl.) Harm and, 



Parmelia obscura (Ehrh.) f, sciastrella Nyl, in lit. in Arnold Die 

 Lichenen des fränk, Jura, Flora (1874) p. 569 (no description). 



Physcia lithotea var. sciastrella Nylander De gonidiis et eorum formis 

 etc. Flora (1877) p. 354 (note). Zahlbrlxkner Zur Flechtenflora des 

 Presburger Comitates II. Verb, des \^ereins für Natur- und Heilkunde zu 

 Presburg vol. XIX (X) (1899) p. 4. 



