Art. I. — A New Genua of Lichens, 



By James Stirton, M.D., F.L.S., Cor. Mem. Royal 

 Society, Victoria. 



[Contributed 28th April, 1881.] 



Trichocladia Baileyi (Strn.). 



Thallus prostratus (latit. '4 — 1 — poJlicaris et ultra), 

 profunde laciniato — dissectus, laciniis divaricatis supra 

 convexulis vel planiusculis (latit. 1*5 — 4 mm.), viridibus 

 vel virescentibus demum pallide fuscescentibus, difformiter 

 pinnatilobis, margine sinuato — crenatis et interdum incisis, 

 subtus fuscescens vel fuscus, radiatim costatus, radiculosus 

 (radiculis fuscis vel fusco-nigris, longiusculis, plerumque 

 fasciculatim dispositis), insuper, dense pannoso — tomentellus, 

 etiamque creberriter cyphellatus (cyphellis pallidis, rotundis 

 vel oblongis, profunde urceolatis vel fere thelotremoideis) ; 

 apothecia marginalia sessilia vel elevato-sessilia, pallide 

 carnea demum pallide rufescentia, biatorina (juniora mar- 

 gine pallidiore),planiuscula (latit. "5 — 1*5 mm.),intus pallide 

 citrina ; sporaB 8 use, incolores simplices vel interdum spurie 

 1 — septatas, oblongse vel fusiformi — oblongaB, hinc inde cur- 

 vulas, *009 — '012 x circ. '003 mm.; paraphyses confer tee, 

 graciles apice inspersse (K — ); hypothecium incolor. Iodo 

 gelatina hymenialis intense ceerulescens. Hyphas medullares 

 divaricato-ramosa3 et anastomosantes, plerumque hirsutulas 

 (latit. "006 — "01 mm.). Thallus K vix coloratus; medulla 

 K— C— . 



Spermogonia nigra prominula verrucif ormia, marginalia ; 

 spermatia non visa. 



Supra terram in pascuis prope Brisbane (Queensland). 

 Coll. Bailey, No. 288. 



This plant has evident affinities to the Cladonice, especi- 

 ally through such forms as those included under the term 

 Cladonia ephiphylla, but the peculiarities of the under 



