682 .1. G. C. L 



EIIMANN. 



dero aus der Mitic seiner Oberflache iind zu mehrcren hintcrcinander 

 gcstolli , hervorkommen. 



In Bczug auf dcn Gattungscharakter von Plagiochasma , wic 

 llcrr Prof. Bischoff denselben in scincr trefflichen Abhandlung iiber 

 dic Lebermoose mittheilt, wiirdc sich dcrsclbc iiir uuscre neue Gat- 

 tung folgendermaassen ieststcllen lasscn: 



Capituli fructiferi rhachis nulla. Involucrum simplex 

 (subglobosum), horizontaliter (s. transverse) bivalve, mono- 

 carpum. Sporangium sessile, extrorsum spectans, laciniis 

 valde inaequalibus dehiscens. Calyptra persistens , inaequa- 

 liter rupta, sporangii basin cingens. Disci antheridiiferi in 

 frondis superficie semiimmersi. 



AJtfTROCEPHLlXUS IVEPAIjEUrSlS. 



Frondes caespitosae, 6-lineares-pollicares, basi angusta- 

 tae lineares, versus apicem dilatatae, simplices vel ad medium 

 bijidae; lobi 2 — 3 lineas lati, apice rotundati plus minusve 

 emarginati. Frons basi subplana, tum concava, marginibus 

 adscendenti-patentibus , sinuoso - crenulatis , subtus fibrillis 

 multis albidis terrae arcte adhaerens, rugosa et membrana 

 tectafusco-purpurea in lamellas transversales secedente lan- 

 ceolatas ultra marginem subexcedentes, apicem versus longio- 

 res. In cmarginatura apicis frondis eiusque loborum fasci- 

 culus talium lamellarum adest. Color superficiei glauco-viri- 

 dis, hic illic fusco-purpurascens. Textura membranacea, 

 apora, nervis remotis Jlexuosis percursa. In medio sulcofron- 

 dis fructus seriatim dispositi. Av.chegonium subglobosum 

 sessile, paleis multis lanceolatis rubris supra illurn conniven- 

 tibus tectum; germen absque stylo videtur, quiforsan cadu- 

 cus. Postea elcvatur fructificatio in pedicello fusco glabro, 



