760 BULLETiN DE l'herbier boissier. Corsinia, 



hic illic bractea parva basali instructa. Sporae 120 {x, brunnese, reticu- 

 latim lamellatce. 



Hab. Italia, GaUia, Alpes Austriae, Germania, Portugal, Algeria, Corfu, 

 Brasilia, Paraguay. 



CORSINIA Raddi 



Op. sc. Bologna, II, p. 354. 



Plantee thallosse, terricolce, dichotome ramosa?, sulco antico nullo, 

 cavernosse, cavernis unislratis, basi fiUferis. Stomata simplicia. Squamie 

 posticse parvee, irregulariter distributse, e basi radiculas incrassatas pro- 

 ferenles. Androecia linearia, utroque lalere strato lamellifero proximo 

 cristatim involucrala. Anlheridia costae immersa, aggregata, numerosa, 

 cavernis monandris. Archegonia singularia vel in soros aggregala, strato 

 anlico recedente coslce inserta, fihs septatis circumdata; involucrum e 

 loro pistillorum ortum, erectum, squamiforme vel magis evolutum et 

 fructum semi-amplectens, pluristratum haud poriferum, interdum e 

 centro sori ortum apiceque umbelUforme diiatatum. Calyptra magna, 

 crassa, medio supero papiUis elongatis hispidissima. Capsula sphserica, 

 magno bulbo inserta, parietibus unistratis sine fibris spiralibus. Pseudo- 

 eiateres oO[j. longi, late fusiformes, fibra spirali nulla. Sporee tetrsedrae in 

 facie convexa reticulatim sulcatae. 



- 1. G. marchantioides Raddi, 1. c. 



Dioica, interdum monoica, pallide viridis, spongiosa, fragiUs, arcte 

 repens. Fro7is usque ad 2 cm. longa, furcata, furcis divergentibus, late 

 oblongis, apice breviter emarginatis et squamarum appendiculis protectis, 

 antice subplana, stomata parva, poro a 6 ceUulis concentricis circumdato; 

 costa strato antico duplo humUiore duploque angustiore, postice plano- 

 convexa, sensim in alas attenuata, medio dense radiculosa. Squamx pos- 

 ticae hyalinse, conicse, appendiculo apicali longissimo, filiformi. Stratum 

 anticum laxe cavernosum, filis chlorophyUiferis e fundo cavernarum 

 ortis. Ostiola mascida parum prominentia. Involucrum pro more parvum, 

 irregulariter laceratum, fructum a tergo tegens. Sporae 120 ^, anguste 

 alalse, ala aspera, cuticula e laminis magnis hexagonis formata, culicula 

 interlaminari angusta minusque crassa reliformi. 



57 



