340 CHARACTERS OF TRIBES AND GENERA. 



Cunn. (v v.) ; G. rupestris, R. Br. (v v.) ; G. alpina, E. Br. 

 (v v.) ; G. speluncse, R. Br. (v v.) ; G. polypodioides, 8m. 

 OBS. In the two last species the lobes of the pinnae are 

 but slightly revolute. 



MERTENSIA, Willd. 



Pinnce pinnatifid, lacince plain, oblong, linear lanceolate, some 

 an inch or more in length. Sporangia lateral. 



Sp. G. flabellata, B. Br. (v v.) ; G. dichotoma, Hook. 

 (v v.) ; G. furcata, Spreng. (v v.) ; G. pectinata, Pr. (v v.) ; 

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

 G. Cunninghami, Hew. (v v.) ; G. longissima, Bl. (G. 

 glauca, Hook. ; G. gigantea, Wall. ; G. excelsa, J. Sm. ; G. 

 Bancroftii, Hook. ; Mertensia pinnata, Kze.; G. arachnoides, 

 Mett. ; G. bullata, Moore; Hook in "Synopsis Filicum"). 



OBS. 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 under cultivation. 



** Sori indusiate. 

 197. MATONIA, E. Br. (1830). 



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

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

 1 to 2 feet wide ; segments numerous, uniform, linear 

 lanceolate, equally pinnatifid, lacinaa about 1 inch in length, 

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

 forked, free ; the fertile anastomosing. Sporangia definite 

 (4 to 6), disposed in a single series round a punctiform 

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

 furnished with an orbicular, inflated, central attached, 

 stipate indusium, constituting globose sori. 



