DE, LINDSAY ON THE LICHEN- FLORA OF GREENLAND^ 297 



Isidium oculatum * is doubtless Lecanora oculata. 



Parmdia recurva, Ach.=.V. incurva, Pcrs. 



Endocarpon sinopicum, ^7i/;A^. = Lecanora smaragdula, var, 



Lecidea atro-virens, Ach.=-Jj. geographica. 



Cor7iiculana spadicea, ^cA. = Cetraria acuJeata. 



There is less or no difficulty as to the identification of the 

 remainder of the Lichens enumerated by Hooker or Brown, which 

 are the foUowingf : — 



Cladonia rangiferina ; pyxi- Parmdia saxatilis, var. om- 

 data; gracilis; cornucopioi- phalodes ; lanata.§ 



dcs ; furcata ; bellidiflora. Umbilicaria proboscidea ; || 



Cctraria nivalis ; Islandica ; erosa.^ 



cucuUata. J Placodium elegans ; murorum. 



SphcRrophoron coralloides. Lecanora tartarea.** 



Pdtidea canina ; aphthosa. Soloiiiia crocea. 



^: Thamnolia vermicularis. Alectoria divergens. 



The whole number of species and varieties enumerated by 

 Hooker and Brown is only 37, while the Spitzbergen Lichens 

 catalogued by Fries amount to 266, — the very great difference 

 being a measure of the progress that has been made in the collection 

 and study of the Lichens of that island since the voyages of Parry 

 and Scoresby. All English lists of Spitzbergen Lichens are 

 included in the " Lich. Spitsbergen ses " of Fries, which is — and is 

 likely long to remain — a standard work on the Lichens of that 

 island. 



Contrasting his list with the Catalogue which follows of 

 Greenland Lichens, it is at once obvious that — as in the case of 



* The specimen in the Kew Herb., labelled '* Walden Island (Parry)," 

 appears to me, however, to be referable to Lecanora tartarea. 



f I have had the opportunity of examining several of them for myself in 

 the Kew Herb. 



X C.juniperina occurs in the Kew Herb., labelled " Arctic Islets (Parry)." 



§ P. caperata, in abundant fruit, labelled " Spitzbergen, Ross," occurs in 

 the Kew Herb. But I am not aware of Ross having visited Spitzbergen. 

 Physcia parietina (sub nom., candelaria) , labelled " Ross' Islet (Parry)," 

 occurs in Kew Herb. 



II U. hyperhorea occurs in Kew Herb., labelled " Walden Island (Parry) ;" 

 and U. vellea, labelled " Ross' Islet (Parry)." What is labelled in the same 

 Herb. U. proboscidea, " Parry's Voyage to the North Pole," appears to me 

 to belong to cylindrica. In the same Herb. U. hyperhorea occurs, labelled 

 " Spitzbergen, Parry, Voyage to the North Pole " (partly sub nom., Gyro- 

 phora tessellata, partly G. vellea). 



^ It does not appear which species of " very large Tripe de Roche " it is 

 that is or are described by Parry as very abundant on rocks on the south side 

 of Walden Island, and on the sides of Little Table Island. In his " Narra- 

 tive" (1829, pp. 65, 67, and 175) he refers to the abundance on Walden Is- 

 land of Umbilicaria proboscidea, Cladonia rangiferina, and Alectoria divergens, 

 while the " Tripe de Roche " was more luxuriant than he had ever seen it 

 elsewhere. Scoresby, too, describes the rocks of Spitzbergen as " covered 

 *' with a mourning veil of black Lichens " (consisting apparently of three 

 species of Umbilicaria; Parmelia stygia ; and Alectoria chalybeijbrmis). 



** Var. frigida (sub horn. Upsaliensis) occurs in the Kew Herb., labelled 

 'Spitzbergen, 1773, C. J. Phipps." 



