78 Transactions. — Botany. 



banensibus parcius radiculosis). Apothecia conferta, rufo- 

 fusca, plana margine integro vel crenulato, et receptaculo 

 thallino subtus rugoso vel foveolato et versus centrum nigro ; 

 sporas 8, incolores, ellipsoiclese, simpliees, 0-013-0017 x 

 0-008-0-01 mm. Spermatia fere cylindrica, recta, 0-009 x 

 00007 mm.' 



The reactions of this lichen on the medulla are K — C — , 

 or nearly the same as those of P. caperata, which are K — C 

 faintly red. 



Parmelia testacea, Strn. Scot. Nat., 1878. 



Thallus firinus, adpressulus, pallescens, rufescenti-cine- 

 reus vel pallide cervinus, centro squamulosus vel in- 

 terdum crustaceo- squamulosus, radiato-laciniatus, laciniis 

 ssepe irabricatis, rugulosus, oblongis et lobato - divisis, 

 subtus niger, breviter nigro-rhizinosus ; medulla alba K 

 flavens dein intense rubens ; apothecia primum concoloria, 

 testacea, demum hepatica, sessilia, plana, majuscula (latit. 

 4-20 mm.), rotundata, plerumque lobato-incisa (praesertim 

 seniora), receptaculo extus rugoso; sporae 8, eliiDsoideae, 

 0-013-0-018 X 0-008-0-Olmm. Ad saxa (?), prope Welling- 

 ton, New Zealand (/. Buchanan). 



This lichen seems allied to P. saxatilis, but the thallus is 

 not reticulated, but merely shows here and there very minute 

 depressed soredioid points, etc. The spermatia are bifusiform, 

 0-006-0-007 X 00007-0-0008 mm. 



Parmelia erubescens, Strn. Scot. Nat., 1878. 



Thallus pallide rufescens vel rufescenti-cervinus, laciniato- 

 lobatus, laciniis rotundatis, margine crenatis vel crenaco- 

 incisis et nigro-ciliatis, subtus totus rufo-fuscescens vel etiam 

 cupreus, breviter sed creberriter nigro-rhizinosus ; medulla 

 pallida (K flavens dein rubens) ; apothecia ignota ; spermo- 

 gonia innata extus nigra spermatiis exacte cylindricis, rectis, 

 0-008-0 01 X circ. 00005 mm. Prope Brisbane supra alias 

 Parmclias {F. M. Bailey). 



Although allied to P. j^o'forata, the differences indicated 

 above are quite sufficient to warrant a separation. The 

 colour of the thallus seems normal, and not induced,' as we 

 see occasionally in P. -perforata, by extraneous influences. 

 The marginal cilia are much thicker and longer than the 

 rhizinae, which are finer than usual. 



Parmelia conspersa, var. nigro -marginata, Strn. 



Similis varietati Stenophylla sed laciniis nigro-margmatis. 

 Thallus subtus niger et fere omnino nudus. Medulla alba K fl. 

 dein rubens et thallus, supra K — . Prope Gippsland, Aus- 

 traliifi [Lucas). 



