278 



TLOBA OE NEW ZEALAND. 



[Lichenes. 



breviter tomentoso subocliroleuco bullato versus ambitum subnudo pallido vel albido, cyphelhs minimis 

 niveis, apotheciis semper marginalibus, disco (semper ?) nudo. 



Var. a. glauca, Bab. ; thallo molli glauco pallido subtus versus ambitum subnudo albido, apothecio- 

 rum disco subrubro.— Sticta impressa, Tayl.! pr. p. ut supra. 



Var. /3. rufovirescens, Bab. ; thallo rigidiusculo rufo-virescente subtus obscuriore versus ambitum 

 fnlvo, apothecioram disco mgrescente.-J. Rich. Astral, I. 9./. 1. S. Richardi, Mont, I Ft. Fernand. 

 n, 79. Yoy. cm Pole Sud, p. 187. S. carpoloma, A. Rick, ut supra {non Delise). 



Hab. Northern and Middle Islands, abundant, If Urville, Cunningham, Hombron, Lyall, etc. 



This form is in general easily distinguished from the following by certain relative characters, such as a softer, 

 more opaque, and paler thallus, more naked and paler underside, also by the strictly marginal apothecia, whose disc 

 we have never seen pruinose, and by the invariably (?) snowy cyphelte; but when the plant assumes the form well 

 represented by M. Richard (our var. (3), it becomes less easy to separate it from S.foveolata y, and we have seen a 

 Tasmanian specimen or two so ambiguous that we fear the plants may possibly pass into each other, as Dr. Hooker 

 has also strongly suspected: Dr. Montague calls the margins « eorrugato-ascendent :" the same remark may often 

 be made of the following species. Found also in Juan Fernandez, Auckland Island, and Tasmania. 



11. Sticta foveolala, Delise, Slid. p. 101. I. S.f. 36 (bm.) ; thallo cartilagineo rigido nitido lobis 

 subcorniculatis, supra obscuro olivaceo s. viridi-brunneo reticulalo-foveolato, subtus plus minus tomentoso 

 subobscuro non aut vix bullato, cyphellis subclausis minimis albidis s. lutescentibus, apotheciis marginalibus 

 et disco frondis sf arsis, disco primitus sajpe pruinoso demum nigro. 



Var. a. Flolowiana, Bab. ; thallo crasso ad centrum diviso, lobis latiusculis divisis segmentis subline- 

 aribus profundissime scrobiculatis, subtus obscuro nigricante tomentoso, cyphellis albidis s. flavidis, apothe- 

 ciis numerosissimis marginalibus et interdum sparsis.— S. foveolata, Delise, I. c. Mont.! Voy. cm Role 

 Sud, p. 186. lloolc.fil.! Fl. Antarct, p. 197. S. Blotowiana, Raur. in Linn. 1827. p. 40. S. impressa, 

 Tayl.! pr. p. ut supra. S. linearis ejusd.! 



Var. /3. cellulifera, Bab.; thallo stellato crassissimo vix usque ad centrum diviso, lobis latissimis 

 (uncialibus et ultra) profundissime reticulato-scrobiculatis parum profunde divisis segmentis latiusculis 

 brevibus subpalmatis, subtus reticulato ad centrum nigricante, cyphellis albidis s. flavidis, apotheciis per 

 totum thallum dispersis et marginalibus.— S. cellulifera, Tayl.! pr. p. ut supra. IIoo/c. fill Fl. Antarct. 

 p. 198. (Tab, CXXIV.) 



Var. j. Billardieri, Bab. ; thalli laciniis angustioribus longioribus politis glauco-fuscescentibus minus 

 crassis minus profunde scrobiculatis, subtus versus ambitum ssepius fulvis, cyphellis plumbeis s. albo-flavidis 

 saepe clausis obsoletis, apotheciis subtnarginalibus.— S. Billardieri, Del. Slid. p. 99. t. 8.,/. 35. RhoTc.fil! 



Fl. Antarct. p. 527. 



Hab. Northern and Middle Islands, common, Cunningham, Lyall, etc. 



The Lichens comprehended in the above-cited synonyms have occasioned much trouble to Dr. Hooker and my- 

 self. I cannot discover any limits to the varieties above mentioned; the cyphellaB vary considerably in colour, and 

 the upper and under surfaces of the frond still more so. In all the forms of this species the scrobiculations are 

 more irregular, the consistence thicker, the thallus more polished and darker, than in the preceding ; in a and 

 the scrobiculations are very deep, and the thallus in all appears intersected by anastomosing lines, which are often 

 punctulated ; the apothecia also (usually very numerous) are freely scattered over the frond. In y the reticulations 

 are less profound, the segments narrower and less thick, often denticulated at the margin, the under side somewhat 

 paler, and the apothecia are more confined to the margin ; the colour, however, of both sides of the frond is variable. 

 In all, the disc of the young fruit is often pruinose. Var. /3 has very much the habit of S. pulmonacea, and hardly 

 differs from S. anthraspis, Ach. ! from California {Herb. Sm.), except that in the latter the segments are hardly at 



