Plagiochasma. franz stepham. spegies hepaticaf.um. 785 



valde attenuato, ipso apice 6-plo angustiore longeque barbato. Capitula 

 biloba, vertice leniter emarginata, mammoso verrucosa, involucris vali- 

 dis. Reliqua desunt (« ut in reliquis » Syn. Hep., p. 521). 

 Hab. Chile (Bertero), Bolivia, Sorata (Mandon). 



19. P. australe (Taylor), Nees. Syn. Hep., p. 515. 



Syn. Fegatella australis Taylor, J. of Bot. 1844, p. 572. 



Monoica, minor, viridis postice atropurpurea. Frons usque ad 2 cm. 

 longa, 3 mm. lata, furcata, antice plana, postice convexa, costa humilis 

 angusta, alis parum attenuatis. Stomata parva, poro exiguo, cellulis 5 

 obconicis circumdato. Cellulae epidermidis haud incrassatse. Squam^ 

 posticse parvEe, late semilunatse, geminatim appendiculatse, appendicula 

 abrupte ligulala, breviter acuminata, acula, squamee eequilonga. Carpo- 

 cephala pedunculata, pedunculo 8 mm. longo, tenui, apice longe barbato. 

 Capitula biloba, vertice anguste lunalim excisa, anguhs mamillatim 

 prominentibus. Sporae 60 ^, Elateres 250 [x. Androecia rotunda, flori 

 femineo approximata. 



Hab. Nova Zelandia (Hooker), Australia (Ferd. v. Miiller, teste Gottsche). 



Die Beschreibung ist nach dem australischen Exemplare gefertigt, da 

 das Hooker'sche Original (in Kew) fertile Sprosse nicht enthalt. 



— 20. P. elongatum Ldbg et G. Syn. Hep., p. 519. 



Monoica, dense csespitosa, viridis subtus purpurea. Frons anguste 

 ligulata, usque ad 35 mm. longa, 4 mm. lata, dichotome ramosa vel ex 

 apice innovata, medio antico plana, marginibus attenuatis, adscenden- 

 tibus. Stomata minima, cellulis 2 vel 3 circumdata; cellulee epidermidis 

 trigone incrassatse. Squamx magnee, imbricatse, purpureee, apice roseae, 

 semilunatse, abrupte in appendiculum longum raro geminatum anguste 

 lanceolatum attenuatee. Carpocephala parva, brevi pedunculata vel ses- 

 silia, paleis rubris, lanceolatis vel filiformibus barbata vertice breviter 

 emarginata, biloba. Sporse 86 ji. Elateres bispiri vel trispiri 300 ja. An- 

 droecia rotunda, pedunculo approximato. 



Hab. Mexico (Liebman, Deppe et Schiede, Stahl). 



21. P. coerulescens Nadeaud. 



Bioica, mediocris, tenuis, glauco-virens, fere ccerulescens, postice haud 

 colorata. Frons simplex vel ex apice innovata, anguste linearis, usque ad 

 3 cm. longa, 4 mm. lata costa angusta, alis tenerrimis. Stomata parva, 

 poro minimo 4-5 cellulis obconicis circumdato; cell. epidermidis trigone 



