TUB LICHEN FLORA OF QUEENSLAND, 



brown. The medullary lemon coloured or greenish layer 

 (K — C— ). Generally sterile ; one specimen examined had 

 small immature apothecia the colour of the thallus, and 

 with no visible excipuluin. Its affinities are towards P. 

 sulphurata, Flot. 



Hab. — On bark near Brisbane. 



Dr. Stirton in Proc. Roy, Soc. Vic. Sept. 1880. 



P. sulphurata Nees et Flot. (K orange red. ) 



Thallus albo-glaucescent or whitish, within sulphur yellow or 

 white-sulphureous, strongly membranaceous, laciniately 

 divided, laciniaa contiguous or sub-imbricate, with undulate 

 margins, and rotundate-crenate circumference ; epithallus 

 M. often minutely isidiose-granulose or furfuraceous ; beneath 

 black, glabrous or sub-glabrous, and the marginal area pale 

 bright brown. Apothecia badio-rufous, mediocre ; margin 

 of the receptacle thin, crenulate-erose ; spores '02 — -026 x 

 •009 — -012 m.m. 



Differing from P. perlata in the sulphureous medulla and the 

 larger spore-. 



Kyi. Syn. Lich. p. 377. Vol. I. 



P. euplecta, Stirton (K + ). 



Thallus pallid or pallid-virescent, appressed, occasionally 

 sorediferous, lobate-dividcl, beneath black, sparingly rhizi- 

 nose, borders i'uscescent ; upper medullary stratum white 

 Sn. (K yellowish), lower stratum thin, flavescent or pallid- 

 flavescent (K red or golden-yellow-red). Sterile. 



• Scottish Naturalist for July, 1878. 



Rev. J. M. Orombie, Lich. Chall. Exp. says — " Externally 

 resembles states of P. tinctorum, Despr., but differs from 

 this and afl known species by its peculiar reaction K (medulla 

 and soredia) greenish black." 



Dr. Stirton replies — " Blackening of thallus by K is most 

 likely owing to something abnormal, as second application 

 on another part gave K yellow in upper white stratum, red 

 in lower very thin yellow stratum." 



