r ii 



rAB. xc. 



GYMNOGRAMMA RUT^FOLIA. 



FILICES.— GYRATiE. Br. 



PoLYPODiACEiE. Kaulf. Filices verae. Willd 



Gen. Char 



GYMNOGRAMMA, Desv. Sori oblongi, venis frondis simplicibus furcat 



inserti. Indusium nullum. — Frondes pinnatce, bipinnatce decompositceque ; radices ccespitosce 

 Desv. 



Gymnogramma rutcefolia ; fronde pinnata pubescente, pinnis cuneiformibus integris incicisve. Br. 



* 



Grammitis rutaefolia. Br. Prodr. Fl. Nov. Holl.p. 146. Spreng. Syst. Veget. v. 4. p. 41. 



^^ • 



Hab. Insula Van Dieman. Brown. D. Fraser. 



Hadix nigro-fusca, caespitosa, e fibris plurimis ramosis. 



Tota planta, subtus stipes rachisque praecipue, hirsuto-pubescens, pilis pellucidis, rigidiusculis, acutis. 



Stipites breves, vix unciam longi, flexuosi. 



- 



Frondes pinnatae, vix duas uncias longae, pinnis 6 — 9, alternis, remotiusculis, ovato-cuneatis, rigidiusculis, integris 



vel inciso-lobatis, summis confluentibus. 

 Sori venis furcatis inserti, demum in unam massam, pinnarum dorsum omnino tegentes, congesti. 



Capsulcc sphaericae, fuscae, sublonge pedicellatae. 

 Semina intense fusca, limbo semipellucido. 





Fig. 1. Portio stipitis. f. 2. Pili. f. 3. Capsulae. f. 4. Semina: 



magn. auct. 



- 



As Grammitis now stands in the recently published Systema Vegetabilium of Professor Sprengel 

 it contains none but species with simple fronds. At Tab. 6. of our Icones 



Filicum we have 



however, given a species which has the fronds pinnatifid; and at Tab. 89. one with the fronds 

 bipinnatifid. In those species which have compound fronds, we find the nerves to be more rami- 



fied 



and by the union of two 



the forking of a nerve, the 



themselves appear to be 



divided. Thi3 at least is the character of M. Desvauxs Gymnogramma; and hence it may be 

 considered as intermediate between Grammitis and Hemionitis, where the nerves are much branched 



and reticulated, and the sori 



form 



a 



d 



senes. 



If the genus should prove permanently 



distinct from Grammitis, we think that this and the following species Gymn. subglandulosa will be 



* 



rightly placed in it. 



