LICHENOLOGICAL MEMORABILIA. 125 



46. "Placodium chrysoleucum. (Sm.) Ach.— In praeruptis parie- 

 tibus alpis Rittok." = Squamaria clirysoleuca (Sm.) Status margine 

 squamarum atque pagina infera nigricantibus = Reich. & Schub. 

 36. K yellow, C orange-yellow. 



47. "Xanthoria elegans. Link. — In scliisto micaceo ad Qvick- 

 jock." Under this name three specimens are given, two of which 

 have the surface of thethallus minutely punctellato-impressed, and 

 are therefore referable to Placodium murorum, (Hffm.), var. 

 miniatum, (Hffm.), and Leight. Lich. Fl. G. B. 175; and the third 

 is the true Placodium elegans, (Link.). Leight. 1. c, 178. It is 

 questionable whether miniatum should not be distinguished as a dis- 

 tinct species, since it has nothing in common with PL murorum, 

 with which it is usually associated. 



48. " Caloplaca jungermanniae. (Vahl.)— In terra supra muscos ad 

 Aktse" = Lecidea fusco-lutea var. convexa, Schser. Herb. ! I Placo- 

 dium lividum, Hepp. 403, Anzi. Langob. 95. Not Lecanora fulvo- 

 lutea, Nyl. Scand. 146. 



49. " Dimeleena oreina. (Ach.) — In alpibus Nunnats et Rittok 

 prope Aktse." K faint yellow, C deeper yellow, a poor specimen ; 

 thallo macriore ambitu parum effigurato, hypothallo nigro predomi- 

 nante= Hepp. 209. From the re-action this will be L. Mougeotioides, 

 Nyl. see Flora, 1872, p. 364 & 427. True L. oveina, Ach. has K =. 



50. "Rinodina mniaxoea. (Ach.) — Supra muscos ad Aktse & 

 Qvickjock" = Lecanora mniarxa, Ach. Th. Fries. Lich. Arct., 

 127. Anzi. Lich. Ital. S., 219. 



51. "Rinodina mniaroea (Ach.) £} cinnamomea. Th. Fr. — In saxis 

 calcareis muscosis ad Aktse" = Th. Fries. Lich. Arct., 128. ; Anzi. 

 Lich. Ital. S., 220. 



52. " Placodium melanaspis. Ach.— Ad lapides inundatos fluminis 

 Tarrajock prope Njungis" = Lecanora alphoplaca (Whlnb). Nyl. 

 Scand., 152. 



53. " Aspicilia cinereorufescens. (Ach.) — In saxis ad Aktse & 

 Qvickjock." This specimen has re-action, K yellow then red, and 



is, therefore, not Lecanora cinereorufescens, (Ach.), which has K 



C — . Judging from the black colour of the somewhat pruinose 

 epithecium it should be referred to Lecanora Myrini, (Fr.). Th. 

 Fries. Lich. Scand., 283, states how L. Myrini (Fr.) and L. alpina 

 Smrft. may be distinguished, the former having a black naked 

 or pruinose epithecium, and the latter a rufous or rufous -black 

 epithecium, especially visible when moistened, but remarks that 

 they may be possibly only states or varieties of the same lichen, 

 With these criteria Richardson Arct. Am., 124, Zeo., 4, should re- 

 present L. Myrini (Fr.), of which I possess a specimen under a 

 different name, without locality, but probably British, from Rev. T. 

 Salwey. L. alpina (Smrft.) will then be represented in Exs. by 

 Arnold, 341, and 341 b., and 116, Seiner. 130; and I possess it 

 from Cader Idris, and from Noirmont, Jersey. 



