LICHEK-FLORA OF >^0IITUER^' EUROPE. 371 



and with abundance of largish suhmargiual black spermo- 

 gones*. 



22. U. cylindrical Dub. 



23. f/". erom, Hffni. 



All thi^ee saxieolous and common. 



24. Paiinaria hrunnea, Mass. Tcrricolous. Eeykjavik moors. 



25. Sq^uamaria cartilaginea^ DC, Saxicolous. 



26. >S'. saxicola, Pollich. Saxicolous, various forms, very common. 



27. S. straminea. Ach. Saxicolous. Videv, 



28. ^S'. gelida^ Sm. Saxicolous, resembling my Caledonian-Canal 



(Scottisli) specimens. Krisuvik, Steenslrup. 



29. Placodium murorum^ Hffm. Saxicolous: common on walls 



and boulders about the shore, Reykjavik. 



30. P. citrinum^ Ach. Associated with the preceding, of which 



it appears to be only a form. 



31. Lecanora viteUina^ Ach. Saxicolous and terricolous : common 



on walls about Eeykjavik. 



32. Z. aiirantiaca^ Lightf., var. erythrella^ Ach. Saxicolous. 



33. L. cerina^ Ach. Terricolous : common on the Reykjavik moors. 



34. L. soj)Jiodes, Ach. "Fere status lecidina'^ O^Y^- MS.), an 



approach to var. Icevif/ata, Ach., both of which are saxi- 

 colous and common in A^idey. 



35. X. cineveay L. Saxicolous, very common. 



3G. L, Dicksonii, Ach. (Lichen jEderi^ Sm. Eng. Bot. t. 1117.) 



Allied to, if not a form of, the preceding. Saxicolous. Eeyk- 

 javik moors ; HavnaQord. 



37. L. parella^ Ach. Saxicolous, very common. 



Var. Upsaliensis^ Ach. Muscicolous, very common, sterile. 

 Both forms sometimes sorediiferous (or variolarioid). 



38. Z. tartarea^ Ach., xawfrigida, Sm. Terricolous. 



39. L. jpoViopTicea^ Whlub., form. Saxicolous, Videy. 



40. Z. glaucoma^ Hffm. Saxicolous ; frequently sorediiferous or 



isidiiferous, bearing parasitic fungi, exactly as in Ben-Xevis 



specimens. 



41. Z. suhfusca, Ach. Saxicolous, Videy. 



Var, epibrga, Ach. Terricolous and muscieolous : common on 

 the moors. '• 



42. Z. umhrincij Ach. Saxicolous, Videy, A close ally, if not a 



form, of the preceding. 



43. Z. varia, Ach., var. polgtropa, Ehrh. Saxicolous, very common. 

 Var. intricata^ Ach. Saxicolous, HavnaQord. 



* Described in my ** Memoir on the Spcrmogones of the Higher Lichens " 

 Trans. Roval Soc, Edinb. vol. xxii. P. 188. - 



