of some Lichens. 283 



Physcia stellaris, forma albo-granulosa, Mei*. 



Mereschkovsky, Contrib. connaiss. lich. gouv. Vladimir, Troudy (Tia- 

 vaux), d. 1. soc. d. Natur. d. I'Uuiv. d. Kazan, 1911 j id. Coutrib. ti, 

 lich. Kazan, Hedwigia, 1919, p. 232. 



Thalliis albus, granuloso-iuasqualis pr^cipue centrum versus. 



Spec. orig. (niuneros.) in herb, iiieo Kazaiii. 

 Ilossia Mfdia. Estiilandia : Keval. 



Physcia tribacia, vai-. labrosa, Mer. 



Mereschkovsky, Contrib. fl.licb6n. envir. Kazan, Hedwigia, 1919, p. 234. 



Thallo griseo-virescente, laciniis magis erectis, irregulariter sub- 

 confertis, labroso-sorediatis a typo valde differt. Forsan ad 

 Physciam lahratam pertinet. Ad corticem arborum. 



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

 liossia Media. E^thlaudia : Reval. 



Physcia virella, var. setosoides, Mer. 



Merescbkov.sky, I. c. p. 236. 



Tiiallus cinereo-virescens, rosulas stepe coufluentes formans, sore- 

 diosus, sorediis viridis ; laciniaj ciliis marginalibus plus minus 

 numerosis, bene visibilibus mode Phi/scice setosce munitae. Sterilis. 

 Ad corticam tilise. 



Spec. orig. (numeros.) ibidem, 

 liossia Media (Kazan). 



Rhizocarpon geographicum, var. ndcroareolata ^ Mer. 



Thallus intense flavescens, areolis minutissimis, circiter 0-4-0*5 

 millim. latis (vol minor), confertis, planis ; apotheciis minutis 

 inter areolis immixis. 



Spec. orig. in lierb. meo Kazani. 

 Austria Inferior (Monichkirchen) *. 



Verrucaria calciseda, forma roseola, Mer. 



" Thallo roseolo." 



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

 Austria Inferior (Wiener AVahl). 



Numerous new forms of Graphis scripfa, with Latin dia- 

 gnoses, have been or are to be described by the author in his 



* Without my notes, left in Russia, I am not quite sure of the locality : 

 it is either Austria or Gallia meridionalis. 



