LICHE>^--FLOIlA OF SOUTHERN EUROPE. 383 



Yar, glabrata, Acli. On weathered fabricated timber, Eomsdal. 



Eeferred to variety argentata by Ny lander (L. Scand. IGO). 

 Var. coilocarpa, Ach. Saxieolous and eorticolous (old barks of 



trees) : Jerkin, common. 



99. Z. cenisia^ Ach. Saxicolous, terricolous, and muscicolous, 



Kongsvold and Jerkin. Eeferred by Nylander (L. Scand. 

 161) to var. atrgnea of the preceding. 



100. Z. wnlrina^ Ach. Saxicolous, Jerkin. Allied to Z. ^w^w^m. 



101. Z. varia^ Ach. Corticolous (on fabricated, weathered wood), 



very common, Vaage A^and and Guldbrandsdal. 



var, intricata, Ach. Saxicolous, HaalangenQeld ; associated 

 wath the following variety. In the Herbarium Kew there 

 is a Sneehiitten specimen, from Sommerfelt (U. I. 1828), 

 which is terricolous and muscicolons, and appears to be his 

 form Jeptacina. There is scarcely any thallus ; and the 

 apothecia are blnish, and priiinose or bloom-covered. 



^^T. polytropa^ Ehrh. Saxicolous, very common, top of Snee- 

 hiitten ; on walls, Eomsdal. To this seems to be referable 



(pr. p. at least) Elytt's Z. Wirliartiana : saxicolous, Kongs- 

 vold. 



Var. liypopta, Ach. Corticolous (on weathered, fallen, and drift 

 wood), Va?blungsnaeset, Eomsdal. 



102. Z. argopliolis^ "Whlnb. Saxicolous, common about Jerkin 



and Kongsvold. 

 Var. tJiiodes, Spreugel, terricolous and saxicolous, Kongsvold, 

 1854, Biytt, sub nom. L. frustulosa and its var. Blyttii 

 (Hepp, Exs. 178), appears to me but a variety with a white 

 thallus. Z. argopholis is at least closely allied to the fol- 

 lowing, with which it would appear for the most part to 

 have been confounded in the herbarium of Blytt. 



103. L, frustulosa, Dicks, {fide Blytt), Drivdal, DovreQeld. 



104. Z. atro-sulphurea, Whlnb. (fide Blytt). Nordland. 



105. Z. epanora, Ach, Saxicolous: Christiania, 1856, Blytt, 



106. Z. nephcea, Smrf (fide Blytt). Drivdal, Dovre^eld. 



107. Z. hadia^ Ach. Saxicolous, very common on the Haalangen- 



and Dovre-:^^!*^^' 

 Var. cinera^cens^ Nyl. Saxicolous, Jerkin and Fogstuen. 



108. Z. atra, Ach. Saxicolous, common ; DovreQeld ; Guldbrands- 



dal ; on talcose slate, Hvitingso ; Stavanger, July 1854, 

 coll. Schubeler in Herb. Blytt. A^ery like British speci- 

 mens on marine rocks (Jersey, &c.). 



109. Z. ventosa^ Ach. Saxicolous, common, Dovrefjeld. 

 ' 110. Z. chlorophana^ Whlnb. Saxicolous, Jerkin, 



