42 



BERNT LYNGE. M.-N. Kl. 



Physcia stellaris ß adscendcns ö manna Th. Fries. Lieh. Scand. i 

 (1871) p. 140. 



Physcia leptalea var. subobsciira Olivier Lichens d'Europe I (1907) 

 p. 240 (164). 



Nylander was well aware that this plant was named by Kdw. Nylan- 

 der, but he rejected the older name on the insufificient grounds that it 

 was »non bonuni«: Dicta var. marina I.e. scd hoc nomen non bonum, 

 (juia etiam aliae formae in maritimis occurrunt'. 



K. Fries mentions a maritime form which is probably our species, 

 but 1 have not seen his plants: »vidi rarissime v. c. e. Christiania in Nor- 

 vegiae maritimis lectae cinereo-fuscescentem«^. 



Tii. Fries cites as a synonym Borrera tcnella ß leptalea Ach. Lieh. 

 Univ. p. 498 '^, the variety of Acharius perhaps includes our species, but 

 it is not identical, which is seen from his description as well as from the 

 station: »Habitat in saxis et truncis arborum Europae«. 



Exsic. Stenhammar Lieh. Suec. 212 inf. dext. 



Thallus loosely fixed to the substratum, pulvinate, 

 laeiniac at the circumference free from the substratum, but not ascendant 

 or only slightly so, towards the centre more or less ascendant or even 

 erect, subimbrieate, repeatedly very multifid with divaricate, divergent 

 interlaced branches. Laeiniae elongate, narrow (0,2—0,5 "^'^^- broad), con- 

 vex, slightly rugulose, opaque, not isidiate, along the margin instruc- 

 ted with long, spreading un branched dark cilia. The dilated, 

 frequently incurved, never fo r n i c ate, api ces of the lacin iae 

 sorediate at their lower side. Colour ash-grey, varying from 

 pale grey to very dark, almost black, lower side pale grey or uncoloured, 

 with few rhizinae. 



Hyphae of the upper cortex more thick-walled than in Ph. teiiella. 

 Apothecia and pycnides frequent; disc black. 



Otherwise the anatomical, earpological and chemical characters as in 

 Ph. tem'lla. 



II ab. Confined to maritime rocks, growing along cracks or in low 

 moist grooves, frequently sprinkled by the sea-water; the Placodium-heh 

 of Warming ■♦. 



' Nylander Ad vegetationem etc. I. c. 



^ E. Fries Lieh. Eur. reform, p. 83. 



** Tu. Vr. Lieh. Arct. p. 65. 



* D.iiisk Plantevækst I Strandvegetaiionen p. 8. 



