286 DK. LINDSAY ON THE LICHEN-FLOBA OF GREENLAND. 



Verrucaria popularis, Flk.* 

 maura, TVhhib. 



var. striatula, Hffm.\ 



But these determinations appear to me so little trustworthy, for 

 the reasons assigned in the foot-notes, that I have not included 

 the Lichens in question in my Enumeration. 



6. Ross and Brown : Lichens of the East Side of Baffin's 

 Bay, lat. 70°. to 76°, and West Side of Possession Bay, lat. 73° ; 

 determined by the late Robert Brown, F.R.S., of the British 

 Museum ; published in the " Voyage of Discovery " by Sir John 

 Ross (London, 1819, 2nd. ed., vol. ii, p. 195). The same Lichens 

 are probably what are enumerated as Baffin's Bay Lichens in the 

 collected works of the said Robert Brown (vol. i, 1866, p. 178). 

 This list contains, however, no Lichens not enumerated in my 

 Catalogue on other authority. 



There are, probably, other minor papers on Greenland Lichens 

 which I have not seen, J e.g.^ one by Nylander, "Ad Licheno- 

 graphiam Groenlandiae quaedam Addenda" (Regensburg, "Flora," 

 1827), describing certain collections of J. Vahl, including, accord- 

 ing to Krempelhuber (" Geschichte," p. 361), a record of three 

 new species. 



In general terms, Lichen-collections in Greenland may be said 

 to have been made between lat. 60°, the extreme south, and about 

 75°, the latitude of Upernavik. Certain exceptional collections 

 have been made as high as lat. 82°, while the majority have come 

 from about the latitude of Disco, 70°. 



Geologically Greenland appears to consist, for the most part 

 of — (1), granites ; (2), metamorphic schists, especially gneiss and 

 mica-slate ; (3), various traps — porphyritic or amygdaloidal ; and 

 (4), various superficial Tertiary strata, exhibiting at some points 

 a rich fossil flora. 



There is in Greenland a gi'eat scarcity of arboreal vegetation — 

 a circumstance that, more than any other perhaps, determines the 



British form. I collected it both in Norway and Faroe (" Northern Cla- 

 donise," pp. 420-1, Journal of Linnean Society, vol. ix. Botany). It would 

 appear to be a much more northern Lichen than Nylander supposes. I have 

 given its northern distribution in a paper on the " Arctic Cladonise " (p. 172, 

 Transactions of Botanical Society of Edinburgh, vol. ix. 1867). 



"^ This is probably a synonym, but I do not find it in any of the licheno- 

 logical works in my library. 



f If this be V. striatula, Whlnb., it is recorded by Fries (Arct., p. 267) as 

 occurring in Einmark. 



It thus appears, that, while in the case of certain of these Lichens (e.g., the 

 Alcctoria and Neuropegon) it is most unlikely they can occur in Greenland, in 

 no case is the determination such that it can be relied upon ! 



X Thus Krempelhuber refers ("Geschichte," p. 361) to— 



1. Collections by Breutel. 2. A list of Lichens, determined by Mr. John 

 Sadler, collected by Robert Brown, F.R.G.S., in North Greenland (Browne 

 and Women's Islands), and on its west coast (Hare Island). — Trans. Bot. Soc. 

 of Edin., vol. vii, 1862, p. 374. In a letter to me. Dr. Brown describes the 

 said Lichens as " only a few " collected, in 1860, " on the Duck Islands, oflf 

 *' the north (?) coast of Greenland. . . . There was only a short list. . . . 

 " When I landed that summer, which was rarely, the ground was covered 

 " with snow, and the only things which peeped out were a few Lichens on the 

 *' rock-summits, all of which I . . . . collected." (See above, p. 253.— 

 Editor.) 



