376 DE. LAUDEB LIIS'DSAT ON THE 



fraxinea, Fr., and fc 



Corticolous. 



16. B, pollinaria, Koh.,: indistinguishable, it seems to me, from 



forms of R. ^polymorjplia^ and saxicolous states of B. cali- 

 caris, x^tr. farinacea, Ach, Sucli a form asvar. /3. rtipestris, 

 Flk., in Hepp's ' Exs.' 566, is doubtless confounded with, or 

 properly merged in, B. polymorplia. All the forms, states, 

 varieties, and species of Scandinavian, as Avell as British, 

 Bamalina that I have seen, would be more conveniently, for 

 the purposes of science, regarded, I think, as referable to 

 a single protean species. 



17. Getraria Islandica^ Ach., and its vars. crista, Ach., platynct^ 



Ach., and Delisei, Schser., Avith their transition forms. 

 DjovreQeld, Haalangenfjeld, and other mountain-ranges, j 



abundant; fruiting frequently in the larger or broader 

 forms (Fogstuen). Some years ago I examined a large 

 quantity of the "Iceland Moss" of commerce (while en- 

 gaged in the examination of the spermogones of this spe- 

 cies) : it had all the appearance of the specimens I gathered 

 on the Dovrefjeld, on which the commercial moss is said 

 to be chiefly collected for the London market. The larger 

 forms {e. g, \2iV, platynd) w^ere frequently found in fruit. 



18. (7. amieata, Ehrh. From Jerkin to the top of Sneehatten 



(4500 to 7500 feet). 



19. Blatysma nivale^ L. Sneehatten and other mountains, very 



abundant, among moss ; spermogoniferous and in fruit ; ex- 

 hibiting considerable variety as to colour, breadth of thallus, 



and curling of its edges. 



20. P.ciccuUatum.^mxi, Sneehatten, and all the fjelds or moun- 



tain-ranges, very abundant; frequent in fruit, and also 

 spermogoniferous; like the preceding as to breadth oi 

 thallus, colour, &c. 



21. B, sopincolum.llSiii, Corticolous. In the fir-woods of Gruld- 



brandsdal; about Eidsvold, on the Mjosen (some forms 

 large-lobed, w^ith sorediiferous margins) ; in fruit, on pales, 

 Guldbrandsdal, Smrf. TJ. I. 1828, in Herbarium Kew. 



22. P. tilophyUum, Ach. Corticolous, on the Dovre:Qeld, and in 



the mountain-valleys trending therefrom. Allied to the 

 preceding, of which Acharius considered it a variety. INy- 

 lander describes it (Scand. 82) as " forte propria species. 



23. P. FaJilunense, L. Saxicolous : common on the Dovre- and 



Haalangen-fjelds ; frequently in fruit, and spermogoni- 

 ferous. 



\ 



