270 



FLOBA OF NEW ZEALAND. 



[Zickenes. 



and at the Cape, the apothecia being either naked or ciliated, 

 species as a form of Borrera clirysopMhalma, Ach. 



Eschweiler can hardly be correct in considering this 



Gen. III. BAMALINA, Ach. 



1. Bamalina calicaris, Fries, Lick Eur. p. 30. Bamalina fraxinea, E. fastigiata, B. farinacea, Ach. 

 Si/a. pp. 2,96, 297. 



Yar. /3. membranacea, Laur. ! ; "thalio plauo lineari-laciniato pallido membranaceo utrinque lsevi, apo- 

 theciis minutis subrnarginalibus carneo-pallidis margine integerrimo."— Laur. in Linnaa, 1827./;. 43. 



Var. 7. genicuMa, Bab.; "thalio laxe eeespitoso [subinflato] albido-cinereo glabra dicliotomo ramo- 

 sissimo, ramis iutricatis lobis linearibus bine concaviasculis acuminatis, gemmis (sorediis) dispersis granu- 

 latis statim linearibus, apotheciis planis concoloribus margine tenui integerrimo, subtus tlialli laciniam emit- 

 tentibus." — Tayl. B. geuiculata, Tayl.l in Lond. Journ. Lot. ut supra. 



Hab. Northern and Middle Islands, A. Cunningham, etc. Yar. /3. Colenso. Yar. 7. Bay of Islands, 

 J. D. H. 



Yery variable, and probably abundant everywhere. The three above-named Acharian species are enumerated 

 as natives of New Zealand by M. Eaoul, and Mr. Colenso has collected specimens according tolerably well with each 

 of them. The var. is " a very common form in the southern hemisphere " (PL Ant. p. 523), and I have not seen 

 any specimens except from that hemisphere. Well marked examples look exceedingly different from B. fraxinea; 

 but there are numerous intermediate forms, and there can be no doubt that Laurer rightly considered the two plants 

 to belong to one species. Var. y, again, is " about 3 inches high ; branches sometimes pierced with a series of minute 

 holes ; the apothecia are merely marginal, or more commonly a new branch of the thallus is sent off from beneath 

 each," Tayl. I. c. This agrees substantially with the form commonly called R. calicaris, but is rather inflated than 

 canaliculated, though it is both in some degree ; the substance is very delicate and polished. The passage from this 

 variety to B. pusilla, Fries, is easy; and I have no doubt (after inspecting a considerable number of specimens of 

 the latter) that it is oidy an extreme and remarkable form of the cosmopolitan B. calicaris, Fries. 



2. Bamalina usneovles, Fries, Lick Eur. App. p. 468 (name only). Alectoria, Ach.! Syn.p. 292. 

 Hab. Northern Island, J. D. II. 



A very different-looking plant from the preceding ; and yet an inspection of a considerable number of specimens 

 collected in Central America by Br. Seemann has greatly shaken my confidence in it as a species. In tins genus it 

 is easy, and perhaps necessary, to give distinctive names to the extreme forms, but it seems very doubtful if any of 

 them are permanent ; they rather appear to belong to one archetypal species, our broad ribbon-like R. fraxinea, 

 from which they have diverged into opposite directions, becoming stiff and terete in B. scojmlorum and B. poly- 

 morph (rock forms), or more or less delicate in texture, and indeed assuming every possible aspect. Dr. Montagne 

 also has referred this plant to the genus Bamalina, but apparently without perceiving that Fries had incidentally 

 done the same thing. (Yoy. au Pole Sud, p. 197.) He has likewise added various synonyms. The present is a 

 Southern form, widely diffused, but not Antarctic. 



3. Bamalina linearis, Acli., Syn. p. 294. Swarlz, Lich. Amer. p. 14. t. 11. Parmelia linearis, Ach. 

 Melh. Lich. p. 257. Sprengel, Syst. Veg. v. 4. p. 278. Raotil, ut supra. 



Hab. "Ni Zealand, 1769, Sir Joseph Banks" (A. Cunningham). "Crescit in ramis arbornm Ja- 

 maicEE temperatioris, et forsan quoque N. Zelandise incola," Swartz, ut supra. " Jamaica, Nov. Zoland.," 

 Sprengel, ut supra. 



Swartz's figure represents a Lichen such as I have not seen from New Zealand. 



