272 FLORA 01 NEW ZEALAND. \Lichenes. 



2. Nephroma resupinatum, Ach., Syn.p. 241 (a typo recedit planta Zelandica, ad \av. papyraceam, 

 Ach., accedens). 



Var. rufa, Bab. ; tliallo tenuissime membranaceo glabra rufo-fusco isidiophoro (non pulverulento), 

 subtus nudo nigricante, apotheciis nigricantibus margine angusto serrato. 



Hab. Northern and Middle Islands, Colenso, Lyall. 



Possibly a distinct species, but I scarcely venture to separate it. More rufous and more membranaceous than 

 N.parile, Ach. (Moug. et Nest. ! n. 838), which Fries unites with his var. papyracea ; it is moreover not sorediated, 

 but isidiophorous, with subsquamulose processes. Medullary stratum white. Dr. Montagne describes the follow- 

 ing variety, found in New Zealand, which I have not seen : — 



" Var. pruinosa, Mont. ; thallo olivaceo-fusco subtus ad ambitum rubescente, lobulis fertilibus brevibus revo- 

 lutis, lamina pruina alba suffusa. An species propria?" Mont. Pole Sud,p. 192. 



This polymorphous Lichen is found over all Europe (Fries), and in Northern and Arctic America. N. laevigata, 

 Ach., which Fries refers to this species, is mentioned as a plant of the Canary Islands by Dr. Montagne. The al- 

 lied species N. Lusitanicum, Scha?r., which has the medullary stratum yellow, is also probably common, but I am 

 sceptical as to its distinctness. I have gathered it in Scotland, and have specimens from France and Madeira. N. 

 cellulosum, Ach., abounds in Tasmania, and may probably occur in New Zealand. 



3. Nephroma Lyallii, Bab. ; thallo laciniato lobato tenui membranaceo supra glaberrimo nitido fevi 

 glauco-cserulescente in ambitu latissime azureo versus centrum subrubescente, subtus nudo pallido versus 

 centrum fuscescente lobis elougatis laciniatis crenatis et dissectis, lobis fertilibus sinuatis paullulum longio- 

 ribus, strato medullari albo, apotheciorum disco pallide rubro, margine late denticulate. (Tab. CXXVII. A.) 



Hab. Northern Island, Colenso. Middle Island, on bark, Lyall. 



A very handsome plant, of which I have seen only one large specimen, about six inches long, composed of 

 several suborbicular individuals. Apart from its brilliant colour, this Lichen differs from N. resupinatum in being 

 far more lobed and dissected, with the margins very minutely crisped, and in its longer, fertile lobes. The 

 thallus, also, is not at all rugose ; even the back of the apothecia has but very faint wrinkles. Further obser- 

 vation must show whether this Lichen be really distinct, or merely (as I strongly suspect) a splendid form of the 

 foregoing ; I have a specimen from the Pyrenees of N. resupinatum, var. parilis, gathered by Mr. Spruce, of a bluish 

 colour, but not clearly indicating a transition. Since the above was written, a mere fragment from Mr. Colenso has 

 come to hand, evidently belonging to the present species. — Plate CXXVII. A. Fig. 1, specimen, natural size ; 

 2, portion of apothecium; 3, asci; 4, sporidia:- — all magnified. 



Gen. VII. COCCOCABPIA, Pens. 



" Thallus membranaceus, subgelatinosus, orbicularis, e squamis fiabelliformibus centro concretis subtus 

 aveniis aut laciniis linearibus multifidis radiantibus constans, supra plumbeus aut viridis, subtus ad fixuras 

 dense tomentosus. Apothecia scutiformia, plano-convexa, interdum symphycarpea, idiogena (i.e. thallo non 

 marginata nee excipulo instructa). Lamina proligera strato medullari primitus inclusa, demum erumpens, 

 ex ascis clavatis sporidia quaterna octonave glauco-viridia elliptico-cymbiformia bilocularia foventibus, para- 

 physibusque crassis geniculate- sub articulatis composita/' — Mont. Pole Sncl, p. 178. 



A very natural genus, but of doubtful affinity, not a species of which was known to Acharius. It was first de- 

 scribed by Persoon, inFreyc. Voy. p. 206 (Presl, Eepert. Bot. p. 95). Hooker, Eschweiler, and others, described one 

 species (Coccocarpia molybdcsa, Pers.) as a Lecidea (L. parmelioides, Hook.! in Kunth Syn. PI. iEq. vol. i. p. 15 ; L. 

 melanotlrix, Eschw. in Mart. Fl. Brasil. p. 258). Fee and Taylor included another in Solorina (see below), the 

 former botanist having first placed it in Circinaria. Delise, in fine, referred the species partly to Parmelia, partly 

 to Collema (Presl, ul; supra) . The habit is quite that of Parmelia plumbea, Ach., and it seems to be as much allied 

 in structure to Solorina as to anything else ; but in the latter genus the lamina is imposed on the gonimical stratum 



