Lichenes^] 



FLORA OP NEW ZEALAND. 



301 



Lichen, except that in one of Mr. Colenso's the fruit is pruinose. Apothecia coal-black within, on a thick stratum. 

 Asci and sporidia not seen ; acicular paraphyses abundant, coloured at their tips with black. 



2. Lecidea vesicularis, Ach., Meth. Licit, p. 78. Fries, Lick. Eur. p. 286. 

 Hab. Northern Island, Colenso. 



Another Lecidea has been sparingly collected by Mr. Colenso, which is seemingly allied to L, cinereo-virens, 

 Schser. ! n. 298, but I could not discover the structure satisfactorily : there were no asci, the disc was white within, 

 margin carbonaceous. L. vesicularis is found all over Europe and in Arctic America, likewise in the Antarctic 

 regions. 



3. Lecidea jlavo-virescens, Fries, Licit. Bur. p. 291. 

 Hab. Northern Island, Colenso. 



Specimens very well developed, resembling L. Wahlenbergii in miniature. 



B. Thallo crustaceo subareolato. 



a. Saxicolm. 



The following enumeration is no doubt very incomplete, and I have been compelled to pass over without notice 



certain specimens which I cannot refer satisfactorily to their origin. The New Zealand species seem to be in almost 



every case identical with the European, and these last, it must be confessed, are at present extremely ill defined and 



understood, and it thus becomes impossible to say anything definite of their geographical distribution. 



4. Lecidea atro-alba, Ach., Syn. p. 11. Fries, Lick. Eur. p. 310. Tayl.l Lick. Antarct. n. 2. 

 Hab. Northern Island, Colenso. Bay of Islands, J. D. II. (On flinty pebbles.) 



A minute form, in which the hypothallus preponderates. 



5. Lecidea contigua, Pries, Lick. JEur. p. 298. {cum syn.) L. speirea, Ach. Tayl.l Lick. Antarct. 

 n. 10. 



Hab. Northern Island, on calcareous rock, Colenso. Bay of Islands, J. JD. H. 



Crust thick, somewhat lobed ; resembling the forms of South Europe in Mr. Colenso's specimens, thinner and 

 less defined in Dr. Hooker's. 



6. Lecidia lapicida?, Pries, Lick. Eur. p. 306. ex descr. {cum syn.) 

 Hab. Northern Island, on primitive rock, Colenso. 



According to Fries, Schasrer's oxydated specimen n. 191, "vix differt" from his own L. lapicida. It seems to 

 be very near Mr. Colenso's plant ; the description of Fries also accords. 



7. Lecidea platycarpa, Ach., Syn. p. 17. Sckcer.l Exs. n. 228. L. contigua, /S platyearpa, Fries, 

 Lick. Eur. pp. 300, 301. L. petrsea, Tayl.l Lick. Antarct. n. 6. 



Hab. Northern Island : Bay of Islands, J. JD. II. (On very friable stone.) 



Apothecia large, having their circumference free, very pruinose ; disc white within, placed on a carbonaceous 

 stratum. Asci elongate, obovate, enclosing about eight sporidia, which are pale green, oblong, inclined to be acumi- 

 nated at both ends, apparently margined, not septate. The structure of Schaerer's specimen is precisely similar ; 

 only the pruina is wanting (having been obliterated ?) in my copy. Crust in Dr. Hooker's specimen almost obso- 

 lete. 



b. Corticola. 



8. Lecidea parasema, Ach., Syn. p. 17. Fries, Lick. Eur. p. 330. 

 Hab. Northern Island; on various barks, probably common, Colenso, etc. 



To this may perhaps be referred L. albido-plumbea, Tayl. ! in Hook. Lond. Journ., a form in which the hypo- 

 VOL. II. 4 h 



