302 



ELOBA 01 NEW ZEALAND. 



\IAchenes. 



thallus preponderates, and which "differs from L. parmema, Act., by its scaly thallus and scattered apothecia." 

 layl. I. c. 



9. Lecidea disseminata, Tayl., Lick. Infarct, n. 20 ; " verracis in substratum tenue nigricans tartareis 

 albidis sparsis subrotundis subrugosis foraminulosis, apotheciis confertis demum immarginatis confluentibus 

 disco rufescenti, lamina pellucida erassa insuper substantiam albam corticalem posita." Tayl. ut supra. 



Hab. Northern Island, Bay of Islands, /. D. H. 



"Patch indeterminate ; warts of the size of poppy-seeds ; apothecia a little larger, their thin border observable 

 only in the young state. It is allied to Lecanora involuta, Tayl." Tayl. I. c. 

 Unknown to me, and probably not a true species of Lecidea. 



10. Lecidea albido-plumbea, Tayl. ! lick. Antarci. n. 23; "crusta leprosa tenuissima albido-plumbea 

 nigro-limitata, apotheciis sparsis subsessilibus, disco atro-pruinoso margine tenui undulato mtus rufescen- 

 tibus." Tayl. ut supra. 



Hab. Northern Island : Bay of Islands, on bark, J. D. It. 



"Patches several inches wide, dull whitish, lead -coloured ; thallus, under a lens, appearing broken into very 

 minute whitish scales ; apothecia few, scattered, the black shell is continued beneath the lamina, which is a dusky 

 brown." Tayl. I. c. 



I can make nothing of this plant, which is in an undeveloped state. It may be L. parasema, or any other 



allied species. 



C. Tliallo crustaceo, subgranuloso . 



11. Lecidea abielina, Acli., var.P saxicola, Bab. Pyrenotbea leucocephala * Lecidina, Fries, lick. 



Eur. p. 450 ? 



Hab. Northern Island ; on sandstone, almost without crust, Colenso. 



This plant is probably the same as is mentioned by Mr. Borrer (sec Hook. Engl. El. vol. v. pt. 1. p. 152), to 

 whom I am indebted for a specimen. I have united it with L. abielina, marking at the same time a doubt of the 

 propriety of so doing. Dr. Nylander, in his valuable observations on Swedish Lichens (Ephem. Holm. 1853, 

 Botaniska Notiser, n. 6), affirms that Pyrenolhea leucocephala, Tries, is L. abielina (spermatogonia), and I had also 

 previously intimated such to be my suspicion to Mr. Leighton in a letter, who has figured the spermatozoa as spo- 

 ridia. (Ang. Lichenes, pi. xxviii.) At the same time, there is some confusion about the synonymy of L. c 1 "" 

 and I am not possessed of the requisite materials for unravelling it. (See Leighton, 1. c. p. 66.)— The L. 

 of British authors grows often on Oaks. 



The species of this and the preceding genus can only be properly elucidated by resident botanists. 



TjiibeIIL GRAPEIBEM. 

 Gen. XVII. GKAPHIS, Ack. 



1. Graphis scripta, Acli., Syn. Lick. p. 81. Opegrapha scripta, a, Fries, Lick. Fur. p. 371. 



Hab. Northern Island, on bark, Colenso. 



Dr. Montao-ne, as well as myself, is inclined to refer this to the common 67. scripta, Auctt. Mr. Colenso's 

 specimens' substantially agree with Seller's Exs. n. 90. The species appears universally diffused, " summo sep- 

 tentrione pro more generis excepto" (Tries) ; with the exception likewise, as it seems, of the extreme south ; at least, 

 it is not included in Dr. Hooker's ' Flora Antartica.' The absence of all true OpegrapM from New Zealand is 

 remarkable; probably, however, O. atra (if not others) will be found: it occurs at the Cape, as well as all over the 

 northern hemisphere. 





