786 BULLETiN DE l'herbier boissier. Plagiochasma. 



incrassatse. Squanide magnee, oblique triangulares, longe cuspidaUc vel 

 profunde bifida?, laciniis anguste ligulatis, apice semper obtusis vel rotun- 

 dalis, mncronaUs basi purpureis, apice hyalinis. Carpocephala breviter 

 pedunculata breviterque 3-4 cornuta subtus longe barbata, paleis anguste 

 lanceolatis hyalinis. Sporpe 76 ^., Elateres 280 ^, trispiri. Androecia sub- 

 rotunda breviter paleacea. 



2'ahiti (Nadaud, Yesco, Yieillard et Panchet, Lepine, Jardin), N. Cale- 

 donia (Deplanche). 



i^ 22. P. brasiliense St. n. sp. 



Dioica, magna, ssepe longe bifurcata, furcis subparallelis, antice glauco- 

 viridis, postice purpurascens. Frons usque ad 5 cm. longa, 7 mm. lala, 

 valida; costa lata, alx attenuatce anguslse, margine distincte crenulatse. 

 Stomata parva, poro minimo. cellulis 4 vel 5 parvis obconicis circumdato; 

 cellulae epidermidis trigonis parvis incrassatce. Squamae maximee, pur- 

 pureae, late semilunatse, appendiculis geminatis vel solitariis, squamse 

 sequilongis, basi constrictis, lanceolatis, acutis, hic illic grosse spinosis. 

 Carpocephala breviter pedunculata, subsessilia, trilobata, vertice alveo- 

 lata; involucra magna, vertice breviter cornula; barba maxima, paleis 

 longissimis confertissimisque, anguste lanceolatis longe acuminatis. 

 Sporeae Kl [i. Elateres 300 [i, bi vel trispiri. Androecia ignota. 



Hab, Brasilia, Apiahy (Puiggari). 



23. P. peruvianum N. et M, Nat, Eur, Leb, lY, p. 40. 

 Monoica, minor. pallide virens, subtus atrosanguinea. Frons 2 cm. 



longa, 6 mm. lata, ex apice innovata; costa lala, valida, alis angustis, 

 Stomata parva, poro minuto, cellulis ^-^ obconicis circumdato, parietibus 

 radialibus valde aequaliterque incrassatis; reliquae cellulse epiderniidis 

 trigonis magnis incrassatse. Squanide posticae oblique ovatse, appendiculo 

 integerrimo, sequilongo, lanceolato, acuto (haud attenuato) interdum 

 geminato. Carpocephala longius pedunculata, pedunculo tenui, apice 

 breviter sparsimque barbato. Involucra solitaria (perfecta non adsunt) 

 apice breviter cornuta, Sporae 72 \^. Elateres ignotae. Androecia bifurca, 

 pedunculo approximata. 

 Hab, Peru (d'Orbigny), 



24. P. Fischeri St. Engler. Bot. Jahrb, 1895, p. 301, 

 Syn. Aitonia Fischeriana., 1, c. 



Dioica, majuscula, glauco-virens. Frons 3 — 4 cm. longa, 5 mm. lata, 



83 



