i)r Jaiiies Stirton on Lichens. 359 



Peltigera polydactyla, Hf»i. 



Stictina scrobiculata, Srrqj. 



Parmelia saxatilis, L. 



Parmelia physodes, L. 



Physcia parietina, L. 



Physcia stellaris, L. 



Umbilicaria dictyiza, Nyl. 



Umbilicaria Dillenii, Turk. 



Umbilicaria arctica, Ach. 



Umbilicaria i\Iiihlenbergii, Tuck. var. thallo superne laevi vel vix 



lacunoso. 

 Umbilicaria polyphylla, Sc/irad. var. anthraciua, Ach. 

 Lecanora tartarea, L. 

 Lecanora subtartarea, Nyl. 

 Lecidea geographica var. atro-virens, L. 



2. I avail myself of the present opportunity to give 

 descriptions of two rather curious and anomalous lichens 

 from opposite poles of the earth's surface, viz., one from 

 the south of Scotland, the other from New Zealand. 



Tliijsanophoron Pinkertoni, gen. nov. 



Thallus pallidas vel pallide lutescens podetiis validis laevibus, 

 dendritico- et divaricato-ramosis, ramis supra confertis et fibrillis 

 elongatis, confertissimis aut profunda digitato-divisis aut elongato- 

 pinnatifidis munitis ; cephalodia sat frequentia, pallida, plerumque 

 parva et gonimia scytonemoidea continentia. Apothecia ignota. 

 Thallus (alt. 1-2 — poUicaris) extus K — ; I^ ; medulla K — ; I 

 caerulescens dein violascens. 



The only specimen in my possession is from Dr E. 

 Pinkerton of Glasgow, who gathered it in New Zealand, 

 but he cannot recall the exact situation, very probably in 

 the neighbourhood of Wellington. There are grounds for 

 suspecting that this lichen is given by Professor Babington 

 under the name Stereocaulon ramulosum (Ach.), var. 

 This lichen presents characteristics which link it on the 

 one hand to SphceropJwixm, and on the other of Stereocaulon. 

 Its chemical reactions are exactly those of Sph. coralloides, 

 to which it otherwise approaches in its general habit and 

 mode of branching, while the presence of cephalodia 

 containing gonimia exactly scytonemoid warrants associa- 



TRANS. BOT. SCO. VOL. XIV. 2 B 



