of some Lichens. 251 



0-7-1 millim., raro ultra latis, sublinearibus, palmatim subdicho- 

 tomice divisig, hinc inde nigi'o-margiiiatis ; thallus baud soredi- 

 osus, colore ut iu typo. 



Spec. orig. (rmmerosissim.) in herb, meo Kazani. 



Confer, cum forma stenophi/Ua, Harm. Lich. d. Fr. p. 507. 



Estlilandia : Austria. 



Parmelia prolixa, var. tenmsecia, Mer. 



Mereschkovsky , Contrib. fl. liclieu. d. 1. Crim^e, Ann. d. sc. uat. Bo- 

 tanique, 1921. 



Thallus liberus vel laxe rbizinis brevibus rarisque ad granulos 

 terrae stepparum adfixus, minutus, circiter ^ centim. latus, 

 nigrescene, nitidus, valde irregulariterque dissectus, laciuiis 

 discretis, angustis, irregularibus, marginibus quasi erosis ; subtus 

 pallidus, subcaiiiculatus. Sterilis. 



Spec. orig. (numeros.) in herb, meo Kazaui. 

 Tauria. 



Parmelia saxatilts, forma jykimhea, Mei". 



Mereschkovsky, Nacbtrag z. Flechtenl. Umgeg. Revalf, Kazan, 1913. 



Thallo cinereo-obscuro vel ciuereo-plunibeo, isidiis ut in forma 



Spec. orig. (numeros.) in herb, meo Kazani. 

 Esthlandia, E.eval. 



Parmelia sorediata^ forma teuuatula, Mer. 

 Mereschkovsky, Nacbtrag z. Flechtenl. Umgeg. Revals, Kazan, 191-3. 

 Thallo minore, lobis augustissimis a typo differt. 



Spec. orig. (numeros.) in herb, meo Kazani. 

 Esthlandia, RevaL 



Parmelia sulcata, forma nitida, Mer. 



Mereschkovsky, Beitr. z. Kenntn. d. Flecht. Umgeb. v. Ueval, Kazan, 

 1909 (sub var. Icevis) ; vide etiam Iledwigia, 1919, p. 199. 



Thallui cinereus ut in typo, baud albidus, nitidus, lyevis vel passim 

 rugulosus, esorediatus, laciniis discretis, elongatis, adnatis, 

 linearibus, 2-3 millim. latis, apicibus baud fuscescentibus. 



Spec. orig. in herb, meo Kazani. 

 Rossia Media ; Esthlandia. 



