Stikton. — On Australian and Neiv Zealand Lichens. 75 



pale-yellow in the lower. This lower half is coloured a 

 bright-yellow by K, which colour is permanent, and differs 

 very litde from citrine after drying. I give the name Stictina 

 diversa to this form. 



Parmelia brisbanenis, Strn. Eoy. Soc. Vict., 1880. 



Thallus tenuis, adpressulus glaucescenti-cinereus vel de- 

 mum pallide cinereus, hinc inde dendritico-isidiosus, laciniatus 

 (K flavens), laciniis margine saepius dissecto-fimbriatis vel 

 isidiatis, subtus niger rugulosus, nudus, sed hinc inde parce et 

 brevissime rhizinosus, ambitu spadiceus ; medulla citrina vel 

 virescenti-citrina (K — C — ) ; sterilis. Corticola prope Bris- 

 bane {F. M. Bailey). AfBnis P. sulplmratce, Flot. 



Parmelia permutata, Strn. Scot. Nat., 1878. 



Thallus pallidus vel pallide glaucescens, leevigatus, lobato- 

 divisus, subtus niger, ambitu pallide spadiceus, parce rhizi- 

 nosus ; medullae pars supera, alba (C leviter erythrinosa), 

 pars infera leviter flavescens (K flavens). xA.pothecia ignota. 

 Ad ramulos arborum prope Brisbane {F. M. Bailey). 



Parmelia euplecta, Strn. Scot. Nat., 1878. 



Thallus pallidus vel pallide virescens, adpressulus, saepe 

 sorediiferus, lobato-divisus, subtus niger, parce rhizinosus, 

 ambitu fuscescens ; medullae stratum superius, album (K fla^ 

 vescens), inferius tenue, flavescens vel pallide flavescens 

 (K . rubens vel aurantiaco-rubens). Sterilis. Ad ramulos 

 prope Brisbane {F. M. Bailey) et in Bahia (Moseley). 



The specimen from Bahia has a paler thallus and is not 

 sorediiferous, but it is very small and not in good condition. 



Parmelia caperata, Ach., is fairly well represented in 

 Australia, although less so in New Zealand. It does not, as 

 a rule, assume the dimensions of European specimens, but is 

 often detected in a diminutive form, to which Nylander has 

 given the name P. caperatula, without, however, appending 

 any description otherwise than " minor, elegantula." Again, 

 in Linn. Journ., 1879, p. 391, Nylander describes another 

 form, from the Derwent Kiver, of xlustralia, under the name 

 P. S2ibcaperatula, differing mainly, as stated by himself, from 

 P. caperata in having smaller spores. I have numerous speci- 

 mens of what may be reckoned this form, but the size of the 

 spores is very variable ; accordingly scarcely any distinction 

 can be founded on this item. The spermatia give a somewhat 

 more definite result, inasmuch as he states them to be sub- 

 bifusiform and 0-005-0007 x 0-0005 mm. 



The following has differently shaped spermatia, and seems 

 tolerably common : — • 



