290 



FLORA OF NEW ZEALAND. 



[Lichenes. 



unequable, wholly appressed to the matrix, except towards the margins, which are free ; in the form of the lobes 

 it is not unlike Biatora placophylla, Erics. The aged thallus is smooth, but towards the edges is speckled with a 

 cobweb-like down; under side yellowish-white, silky, with ridges here and there, but without fibres; these, how- 

 ever would probably occur if the plant were to grow in a situation more favourable to their development. Apo- 

 thecia not altogether dissimilar to those of P. crenulata, Hook. This Lichen, which I had once supposed a very 

 distinct species, should probably be referred to P. rubiginom. Dr. Montague also had remarked to me, m a letter, 

 its affinity with his P. sphinctrina. 



22. Parmelia conoplea, Ach., Syn. Lick. p. 213. Moug. et Nestl.f Fxs. n. 347. P. rubiginosffi var., 

 Fries, Licit. Fur. p. 38. ScAar, Bnwm. Grit. p. 36. 



Hab. Northern Island, Colenso. (Barren.) 



Easily distinguished from P. rubiginom by its masses of blue gonidia scattered over the thallus, which has 

 usually a yellower tint and thinner consistence; but in the opinion of most lichenologists it is not an autonomous 

 species. It seems, however, to be as distinct as most Lichens of this section, and also to have a somewhat diffe- 

 rent geographical range. P. conoplea, according to Schasrer, alone is found in Switzerland, and is certainly not rare 

 in the Austrian Alps, where I have never seen P. rubiginom. Rabenhorst says that P. conoplea is not rare in Ger- 

 many, while P. rubiginom very seldom occurs. Conversely, P. rubiginom occurs in four out of the six districts into 

 which Eries divides the Scandinavian Elora, and P. conoplea only in one. In Britain P. rubiginom is not uncommon, 

 while P. conoplea is rare, though found in Sussex by Mr. Borrer, who pointed it out to me in St. Leonard's Forest ; 

 and also in Wales, where Mr. Hort has lately gathered it. 



23. Parmelia lanuginosa, Ach., Syn. Licit, p. 201. Fries, Lick. Fur. p. 88. 

 Hab. Northern Island, Colenso. (Barren.) 



Apothecia like P.plumbea, according to Erics. Possibly more than one species has been comprehended by 

 authors under this name ; but, as Mr. Colenso's plant is barren, little more can be said of it. 



24. Parmelia triptopltylla, Fries, Licit. Fur. p. 91. cum syn. 

 Hab. Northern Island, Colenso, etc. (On bark : several forms.) 



Apothecia having a strong proper margin ; disc ferruginous, becoming darker; scales much dissected, expanded 

 on the inky hypothallus, which sometimes so predominates (in specimens collected by Dr. Sinclair) that the appear- 

 ance is smoky all over. Referred by Eries to Biatora, in his Summ. Veg. Scand. Probably a cosmopolite. 



25. Parmelia pholiclota, Mont.! Fl. Fernand. n. 85. (Tab. CXXVIII. A.) 

 Hab. Northern Island, Colenso. 



Mr. Colenso's plant is named by Dr. Montagne, but is so very like an authentic specimen of his P. Saubinetii, 

 from Erance, with which he has favoured me, that I am almost unwilling to separate it. In that specimen there is 

 no regular hypothallus, and I almost suspect that the white colour of the matrix must be accidental, or that the plant 

 is parasitical on the hypothallus of another ; the other characters are not very important. (See Eries's remarks on 

 P. triplophylla, Lich. Europ. p. 91.)— A very pretty form, conspicuous for its pale bluish scales and flesh-coloured 

 apothecia ; and yet I much doubt if it be really distinct from the preceding very polymorphous plant.— Plate 

 CXXVIII. A. Fig. 1, plant, natural size; 3, portion, magnified; 3, vertical section of apothecium ; 4, asci; 5, spo- 

 ridia : — all highly magnified. 



26. Parmelia nigrocincta, Mont,!; "thalli squamulis membranaceis contiguis e centra radiantibus 

 rotundato incisis explanatis rnfis, hypothallo cserulescenti nigra effuso late marginante, apotheciorum disco 

 piano rufo-fusco margine pallidiori integcrrimo, thecee ovatao ascis cylindricis serie simplici uiclusffi." 

 Mont. Fl. Fernand. n. 88 {Annal. des 8c. Nat. Am, 1835). 



Hab. Northern Island, Colenso. (One specimen.) 



This agrees exactly with a specimen from Juan Fernandez, kindly given me by Dr. Montagne. It docs not 



