Enumeratio muscorum Caucasi. 147 



26. Porella rivularis (Nées.) Lindb. 



Syn. Madotheca rivularis Nées. 



Cauc. major occ: Badscha, in monte Bereleti pr. Uzeri. 



zi. 



Porella caucasica Steph. Botan. Centralbl. L (1892). 



„Sterilis, dense stratificata, major, crispula, viridis, apice rufo-fusca. Cau- 

 lis usque ad 12 cm. longns, inferne regulariter pinnatus, superne pinnatim-par- 

 titns, ramis irregulariter bipinnatis; pinnulae inferiores flagellatim attenuatae ra- 

 dicantes. Folia conferta, dense imbricata, subrecte patentia, oblonga, margine 

 postico crispula, ceterum varie angulata vel inciso lobulata, apice integerrima, 

 acuta vel longius acuminata, raro mutica, basi antica et postica appendiculo 

 magno libero acuto armata. Cclhilae apicales O,o25, medianae 0,035, basales 0,o45 

 XO,025 mm., trigonis parvis distinctis; lobulus erectns, margine exteriore recurvo, 

 oblongus, acnminatns acutus, margine repando angulatoque irregulariter lacinia- 

 tus, laciniis longioribns bamatis, aliis brevioribns dentiformibus, basi brevissima 

 insertns folioque suo vix coalitus, utroque latere appendiculatus, appendicula lata, 

 libéra, varie armata. Amphigastria foliis aeqnimagna, ovato-triangnlaria, i. e. 

 a basi latissima symmetrica versns apicem sensim angustata, apice ipso apice triple 

 angustiora, truncata, recurva, margine nbique gi'osse incisa, laciniata dentataque, 

 basi utroque latere grandiappendiculata. 



Cauc. major occ: Svania occid. ad flumen Neuskra, in cortice leg. 

 Levier 1890. 



Affines sunt Porella îigulifera, P. Perrottetii, P. campylophylla foliis 

 apice spinosis, P. cilùiris, P. acutifolia lobulo piano obtuso distinguendae. 

 Steph. 1. c. p. 71. 



13. Metzgeria Badd. 

 28. Metzgeria pubescens (Schrank.) Kadd. 



Ad truncos arborum et ad rupes regionis silvaticae mediae et superioris. 



Cauc. major occ: Svania, in silvis inter Lentechi et Tsboluri et pr. 

 pagum ïscboluri 900 — 950 m. (E. L.), in monte Tetenar supra Tscholuri in 

 silvis 1,800 m. (E. L.), Laschketi. 



Cauc major centr.: Ossetia, Kobi ad 11. Terek; Carthalinia, in 

 montibus supra Krtzkbilvan. 



Cauc. minor centr.: Carthalinia, Borschom. 



