340 CHARACTERS OP TRIBES AND GESERA. 



Cimn. (v V.) ; G. rupestris, B. Br. (v v.) ; G. alpina, B. Lr. 

 (v V.) ; G. spelunca3, ii. Br. (v v.) ; G. polypodioides, Sin. 

 Obs. — Iq the two last species the lobes of the pinnoa are 

 but slightly revolute. 



Merteksia, Willd. 



Pinna pinnalifid, lacince plain, ohloncj, linear lanceolate, some 



an inch or more in length. Sp>orangia lateral. 



Sp. G. flabellata, E. Br. (v v.) ; G. dichotoma, Ifool. 

 (v V.) ; G. fiircata, Spreng. (v v.") ; G. pectinata, Pr. (v v.) ; 

 G. pubescens, Kuntli. (v v.) ; G. cryptocarpa, Hooh. (v v.) ; 

 G, Cunmng-hami, Hew. (v v.) ; G. longissima, Bl. (6r. 

 glauoa. Hook. ; G. gigantea, ^yall. ; O. e.vceha, J. Sm, ; G. 

 Bancroffii, Hooh. ; Mertensia pinnata, Kze. ; G. arachnoides, 

 Mett. ; G. lullata, Moore; Hooh in ''Synopsis Filicum."). 



Or.s. — It is probable that several of these synonyms are 

 distinct species, as they are found in very different regions, 

 but this can only be determined by seeing them side by 

 side Tinder cultivation. 



** Sort indusiate. 

 197.— Matoxia, B. Br. (1880). 

 Vernation, sarmentose. Stipes 4 to 6 feet high, smooth, 

 rigid. Fronds bi-partite, ilabelliform, with a cordate base, 

 I5- to 2 feet wide ; segments numerous, uniform, linear 

 lanceolate, equally pinna tifid, lacinre about 1 inch in length, 

 linear lanceolate or obtuse, costate, plane. Veins the sterile, 

 forked, free ; the tertile anastomosing. Sporangia definite 

 (4 to C), disposed in a single series round a punctiform 

 receptacle, seated on the confluence of 5 to 10 veinlets, 

 furnished with an orbicular, inflated, centi-al attached, 

 stipate indusium, constituting globose sori. 



