Stirton.^O;^ Australian and Neiv Zealand Lichens. 79 



Although there is no colouration of the upper thallus by K, 

 yet the red colour produced on the medulla by the same 

 reagent soon shows through. 



Parmelia austro-africana, Strn. Trans. Glasgow Field 



Naturahsts, 1877. 



Simihs P. conspersce, var. JiypoclystcB, Nyl., sed medulla 

 (K — C leviter erythrinosa ; C, seorsum — ). Thallus pallidus 

 vel pallide flavescenti-virescens, subtus totus pallidus vel 

 versus ambitum obscurior vel etiam interdum nigricans, par- 

 cissime albido-rhizinosus et hinc inde rugulosus ; apothecia 

 ampla fusco-nigra, elevato-sessilia ; sporse 8, incolores, ellip- 

 soidete smiplices, 0-008-0-01 x 0-005-0007 mm. Supra Montes 

 Gram pianos Victorise (SiUlivan). 



This is evidently distinct from P. nmtabilis, Tayl., in the 

 colour of the thallus, &c. 



Parmelia amplexula, Strn. Proc. Eoy. Soc, Victoria, 



1880. 



Similis P. aus'tro-africancB sed minor et arete adpressa. 

 Thallus flavescens vel obscure virescenti-flavescens, margine 

 laciniatulus et ssepe isidiosus, subtus nigricans (quantum 

 visus); medulla alba (K — C erythrinosa); sporae 8, incolores, 

 ellipsoideaB, simplices, 0-008-0-01 x 0-005-0-006 mm. ; para- 

 physes crassse, breves et quasi interruptge. Saxicola (F. M. 

 Bailey) . 



That section of the Parmelice of which P. pertusa is the 

 type is well represented in New Zealand and Australia ; 

 indeed, better than in anv others from which I have obtained 

 lichens. P. physodes, L., which may be included in this sec- 

 tion, and P. pertusa have been already frequently described 

 by different authors. Another I described in the " Trans- 

 actions of the Glasgow Field Naturalists," 1877, under the 

 name P. pertransita. This is allied to P. pertusa, but it has 

 smaller spores, and 8 in each theca in place of 2, &c. Mr. 

 Buchanan sent another in 1882, which may be described 

 here. 



Parmelia buUata, Strn. 



Thallus pallidus vel pallide ochroleucus (K fi. dein rubens), 

 bullato-ingequalis, hinc inde minute terebratus, subtus niger, 

 rugosus, nudus, versus marginem pallidus ; medulla tenuis 

 alba (K flavens dein interdum rubens) ; apothecia elevato- 

 sessilia, cupuliformia, margine thallino extus ruguloso (pras- 

 sertim maturatarum), epithecio fusco vel fusco-nigro. Sporae 8, 

 oblongge, incolores, simplices, episporio crasso hyalino con- 

 tentis granulosis saepius lutescentibus, 0022 -0-032 x 0-015- 

 0-018 mm. lodo g.h. thecarum cserulescens, caeteroquin vix 



