— 19 — 



B. Glelcheniarice : caudice repenle et petiolis fasciculo 

 vasor. centrali unico pra^dilis; folia coriacea ^, simpliciter 

 V. saepius di-trichotomo-pinnala et in furcis gemmifera, seg- 

 mentis passim discolorib., margine revolutis v. cucuUalis, ve- 

 nis pinnatis, intrariis v. prominulis et reticulalis. Sori in seg- 

 mentis solitarii v. plures, in dorso v. apice venae sessiles et 

 immersi, toti decidui, l-'l-6-carpi, raro polycarpi ; indusium 

 verum et receptaculum vix ulla. Sporangia grossiuscula, obo- 

 vata, sessilia, endoschiza, annulo lato oblique-transverso, spo- 

 ris ellipsoid. v. trilobis : — Sticherus^ Mertensia^ Gleichenia^ 

 Calymella^ Platyzoma. 



F A 31. 27. H V M E X O P H Y L L A C E .E. 



FiHces elegantes, exot. < partini minimae et tenerrimae — 

 v. majores, caudice repente, gracili, ramoso v. brevi. Folia 

 hygroscopica, absque stomatiis, integra v. varie divisa, sparsa v. 

 conferla ; passim badia v. sessilia ; petiolus ater v. fuscus, saepe 

 nilidus, fascic. vasor. unico praeditus, in rachin laminae pin- 

 natam v. venas palmatas, utrinque prominulas, rarius reti- 

 culatas conlinuatus. Sori marginales v. submarg., intra indu- 

 sium firmum, campanulat. v. bivalve. Sporangia lenticularia 

 V. turbinata, minuta transverse annulata, ad columellam, e 

 nervo folii exserto et iucrassato oriundam, brevem v. elonga- 

 lam, inferne v. superne nudam, spiraliter spicata; sporse glo- 

 boso-trigonae : — JPem, Hymenostachys ^ Lecanium^ Tricho- 



manes^ Micro^onium Didymoglossum , Hejniphlebium. ; — 



Ptychophyllum., Hymenophyllum^ Sphaerocionium.... (Gen. 19 in 

 Monographia Cl. Presl. 1845). 



F A M. 98. S C H I Z iE A C E ^ ( ACROGYRAT.« B e r n h. ). 



Fihces tropicae et hemisph. australis, exiles v. majores, 

 caudice repente , brevi v. obsoleto. Folia integra, angusta, 

 subtriquelra, dicholoma v. lata flabeUata, pinnatifida v. piiina- 

 tiseclo-decomposita (iii Lygodio volubiha et Iriorgyalia), fasci- 



