exxiv GBNBEA OP FEENS : 



on a distinct branoli of the &ond. Spore-cases erect, sessile 

 free, bi-serial, globose, fleshy-coriaceous, bursting vertically in 

 two equal bemispherioal yalves. Veins flabellato-diohotomous 

 or dichotomo-furoate, from a central costa ; venmles free. 



Fronds herbaceous or sub-oarnose, pinnatifid pinnate or ter- 

 nately decompound ; the sterile and fertEe branches distinct. 

 Bhizome short, erect, fleshy. 



Ex. : B. Lunaria, 8w. 



B. virgimcum, Willd. 

 B. lunarioidea, Sw, 

 B, lanuginosuni. Wall, 



B. simplex, Hitchcock, 

 B. rutaceum, Svj. 

 B. matricarioides, Willd. 

 B. australe, 22. Br, 



(b) Fractifications spicate, the spore-cases in glomerate tufts, 



175. HELMINTHOSTACHYS, Kamlfnss, Emm Fit, 

 28, t. 1. 



BOTETOPTEEIS, PreaZ; OPHIALA, DesvaiMj; Botrtchii sp., ^twrf.; OpHI- 

 OGLOaSII 8p,, Auct,; OsaltJKDiE sp., Auct. 



Fructifications consisting of glomerate yerliciUate pedicellate 

 tufts of spore-cases, the whorls terminated by a crest-lilie appen- 

 dage, and arranged in distichous spiked panicles on a distinct 

 branch of the frond. Spore-cases fleshy-coriaceous, globose, ses- 

 sile, inverse, bursting on the outer side, from the base upwards, 

 in two equal or sub-equal hemispherical valves. V^ns forked, 

 from a central costa ; venules parallel, free. 



Fronds herbaceous or coriaceous, trifoliately digitato-pedate, 

 the fertile and sterile branches distinct, Bhizome stout, hori- 

 zontal, with coarse roots. 

 Ex. ; H. zeylardca, Hooh, 



(c) Fructifications spicate, the spore-cases in a single marginal 

 series. 



lie. OPHIOGLOSSUM, Imimceus, Gen, Plant, 779. 



Ophiodeema, JBwfZMcAer; Cheieoglossa, Pres^ ; Ehizoglossum, Pre«2; 

 Cassioptebis, Kcurstcn MS, (KlotzBcli.J 



Fructifications in a distichous spike, terminating a distinct 

 branch of the frond, or on distinct fronds. Spore-cases uni- 



