250 Prof. Dr. C. Mevesclikovsky's Diagnoses 



Spec. orig. (1) in herb. Conservat. botan. Genevfle, (2) in 

 Jleresclikovsky, Licli. ticin. exs. no. 82. 

 Geneva (Helvetia). 



Forma veluiina, Mer. 



Mereschkovsky, Contrib. lich. Vladimir Arbeiten (Trudy) d. Naturf.- 

 Ges. Univ. Kazan, 1911. 



Pars centralis thalli ob iridic deuso velutina. 



Spec. orig. ia herb, meo Kazaiii. 

 Rossia Media. 



Parmelia pht/sodes, forma compacta, Mer. 

 Mereschkovsky, Beitr. Kenntn. Hecht. Umgeg. Revals, Kazan, 1909. 



Thallus compacfcus, laciniis mutuo pressione longitudiiialiter sub- 

 carinatis, centre irregulariter contortu-plicatis. 



Spec. orig. (numeros.) in herb, meo Kazani. S{)ec. a Long 

 missum baud optimum. 

 Esthlandia, Fennia. 



Forma elegans, Mer. 



Mereschkovsky, Contrib. fl. licheuol. Kazan, Hedwigia, 1919, p. 97, 

 tab. ii. figs. 3, 4. 



Thallus rosulas 1-5-5 centim. latas formans, tenuiter elegantiorque 

 dissectus, incision es foraminas rotundas formans. 



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

 Ad saxa arenacea in Fontaiuebleau (Gallia). 



Forma pinnata, Mer. 

 Mereschkovsky, Addit. Lich. Rossiae, i., Oesterr. Botan. Zeitschr. 1921. 



Tballo Buperne albido, nitidiusculo, lobis planiusciilis, angustioribus, 

 discretis, pinnatiforme dissectis a forma typica valde differt. 



Spec. orig. in herb, meo Kazani. 

 Sibiria. 



Forma vittatoides, Mer. 



Mereschkovsky, Nachtr. Flechtenl. Umgegend. Revals, Kazan, 1913 ; 

 id. Contrib. fl. lich('>n. envir. Kazan, Hedwigia, 1919, p. 197, tab. ii. 

 fig. 2. 



Thallus effusus, rosulas nondum formans, laciniis valde discretis, 

 laxe ad substratum affixis, subimbricato-superpositis, angustis. 



