252 Prof. Dr. C. Moreschkovsky's Diagnoses 



Foiiiia tuberosa, Mer. 



Mereschkovsky, Beitr. z. Kenntn. d. Flecht. Um^eb. v. Reval, Kazan, 

 1909; id. Coutrib. fl. lich. envir. Kazan, Iledwigia, 1919, p. 199, 

 tab. ii. fig. 1. 



Thallus rosulas parvas, 2-3 centim. (usque ad 4-5 ceutim.) latas 

 formans, compactus, laciniis brevibus, late-rotundatis, circiter 

 4 millim. latis, concreti.s, subimbricatis, centro irregulariter 

 tuberosus. 



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

 E-ossia Media ; Esthlandia *. 



Parmelia taurica, Mer, 



Mereschkovsky, Schedulae ad Lich. Rossise exsiccatos, Kazan. 1913; 

 id. Contrib. fl. lichen. Crimee, Ann. d. sc. nat. Botanique, 1921 (cum 

 %■)■ 



Thallus liberus, circiter 2-5-3-5 (1-5-5) ceiitim. latus, plus minus 

 compressus, parce irregulariterque ramosus, fuscus, opacus, ■ 

 utrinque similis, interdum ad apicem solum ambi lateris sub- 

 inselibus; superficie inaequaliter subplicato-rugosus, neque soredio- 

 sus, nee isidiosus ; laciniis circiter 0-5 millim. latis, subtei-etis 

 vel tereti-compressis, apicibus ssepe breviter bifurcatis, rhizimis 

 omnino destitutus. Semper sterilis. 



Spec. orig. (1) in herb, meo Kazani, (2) in Mereschkovsky, 

 Lich. Ross. exs. no. 7. 



Tauria et in steppas Kirgisorum. 



Forma congesta^ Mer. 



Mereschkovsky, Coutrib. fl. lich^uol. d. 1. Crimea, in Ann. d. sc. nat. 

 Botanique, 1921 (cum fig.). 



Thallus minor, circiter l'5-2 centim. (0-7-2-6 ctutim.), congestus, 

 verrucoso- vel granuloso-perrugatus, ambitu lobis discretis desti- 

 tutus vel parce sparsim abbreviatis. 



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

 Tauria. 



Parmelia vagans, forma elegans, Mer. 



Mereschkovsky, Schedul. ad Lich. Rossiae exsiccatos, Kazan, 1913 

 (no. 68). 



Thallo minore, subtus nigro, laciniis angustioribus, margiuibus 

 magis revolutis, ssepe couniventibus a forma typica differt. 



* The forma, far inosa, Mer., which 1 have described in ' Hedwigla,' 

 1919, p. 198, is nothing else but the xar. pytiinosa, Harm. (' Lichens de 

 France,' p. 567). 



