Plagiochasma. franz stepha.ni. species hepaticamjm. 



plana; stratum lamelliferum laxe cavernosum, cavernis unistratis eosta' 

 sequiallis. Costa latissima, plano-convexa, haud abrupte producta, infron- 

 dis margines sensim attenuata. Stomata parum convexa, parva, ut in 

 Clevea cellulis in lumen pori convexo-prominenlibus substellata. paricti- 

 bus radialibus valde breviterque incrassatis. reliquis rellulis epidermidis 

 vi\ iiierassalis. Squanue posticm magnae, hyalina) vel basi piir[iiii'ea>. e 

 basi semilunata abrupte appendiculata?, appendiculo (rarius 2 vel 3) lan- 

 ceolato, acuminato, apice margineque cellulis clavatis armato. Inflores- 

 centia paroica vel monoica vel heteroica, Carpocephala terminalia, pedun- 

 culo e rima apicalis orto, ob frondem uno lalere increscenlem quasi e 

 sinu laterali adscendente, usque ad 15 mm. longo, valido bisulcato, cari- 

 nis humilibus longe decurrentibus obtecto, basi nudo, apice breviter 

 paleaceo, paleis roseis occultis, ex angusta basi lanceolatis, cellulis clavalis 

 numerosis subpinnatas. Receptacula rufescentia, interdum purpurea vel 

 subnigra, disco centrali bene definilo, convexo-prominulo, lobis normali- 

 ter 6, profunde discretis, contiguis, decurvis, antice obluse carinatis, 

 crassis; involucra apice breviter bilabiata, labiis postice hianlibus i. e. 

 lissura haud in dorsum involucri adscendente (ut in Clevea). Stomata 

 receptaculi antica nulla. Involucra monogyna ; Calyptra tenuis. Capsula 

 sphserica, irregulariter valvatim rumpens, matura vix exserta, pariete 

 unistrata, flbris annulatis inslructa. Elateres sulphurei. trispiri 2U;i u.. 

 Sporae fusco brunnese, dense papulosae S0[a. Androecia bene definita, dis- 

 ciformia, rotunda vel oblonga vel semilunata, purpurea, paleis brevibus 

 cincta, ostiolis breviter conicis. 



1. P grandis. Lindb. 1. c. 1882. II, p. 4. 



Syn. Preissia qnadrata (Scop.') Nees Nat. d. Leb. IV, p. 135 pro parle. 



Peltolepis sibirica Lindb. 1. c. 

 Hab. Alpes Europie. Tutra (Limpricht), Norvegia. Fenniu (Brotherus), 

 Sibiria (Arnell. Sahllirr- 1. (iroriduini (Vanhoffen). 



PLAGIOCHASMA L. et L. 



in Lehm. Pug. Pl. IV, p. 13. 



Planta) thallosai, fragiles. majuscuke vel magna 1 , gregariai vel ca?spi- 

 tosse, ob ramificationem multifariam sa?pe maxime intrical;e. terricohe 

 72 



