330 



MAHCHANTIACEiE. 



5. Section of frond shewing origin of male peduncle. 

 8, „ origin of female peduncle. 



7. Male head, upper surface. 



8. Transverse section of do. 



9. Anther. 



PLAGIOCHASMA. 



Capsuhe (2-3) aggregate vel solitariae, peduncula termi- 

 nantia, rimis longitutlinalibus dehiscentes et demum irregula- 

 riter circumscissae. Involucra bivalvia. Tunica composita. 



Planta terrestris habitu Targioniae, pedunculus structura 

 homogenus ! esulcatus ! praesertim apice paleaceo-squamatus. 

 Celluhe capsular interiores simplices ! Sporula globosa ; tunica 

 composita, hinc trigona, hinc cu piriformis, cupuli fundo co- 

 num gerente. Elateres fibrae simplices vel duplices. 



Obs. Genua distinctissimum ab omnibus aliis cuticulatis pe- 

 dunculo fictis discrepans structura pedunculi homogenea, et ab 

 omnibus ordinibus mihi cognitis pcdunculo e sulcato frondem 

 perforante : Notu dignum est ob capsular interna? cellulas 

 simplices. 



Playiochasma paradoxa Gr. PI. LXIX. E. Fig. I. 



Had. In rupibus calcareis Moosmai Collium Khasyensium, 

 fructiferam invenimua mense Octobris A. D. 1835. 



Frondes divisae, depressae caespitosae divisiones apice proli- 

 feras oblongo lineares, coriaceae sub repanda?, supra virides 

 subter sanguineo-purpureae ; novelise fructiferae sub ascen- 

 dentes obovatae, profunde emarginataa ; margines sacculateae 

 insigniter involutas. Squamae paginae inferioris secus mar- 

 ginem inferiorem libera! Parenchyma viride in evolutis 

 parietibus compositis divisum. 



Pedunculus 1 J linealis subteres solidus utrinque striatus, 

 rubro-sanguineus hinc illinc sed praesertim apice paleaceo- 

 squamatus, squamis concoloribus summis reflexis. 



Involucra 1-3, sub globosa, semi-bivalvia, valvis, si capsula 



