TAB. XXIV. 



GYMNOGRAMMA CHEILANTHOIDES. 



FILICES. — Gyrat\e. Br. Polypodiace^. Kaulf. Filices verae. Willd 





Gen. Char. GYMNOGRAMMA, Desv. Sori oblongi venis frondis simplicibus furcatisve 



inserti. Indusium nullum. Frondes pinnatae, bipinnatae decompositaeque ; radices caespitosae 

 Desv. 





Gymnogramma cheilanthoides ; fronde pinnata, pinnis sub-bipinnatifidis ? laciniis oblongis obtusis 



racbique pilosis. 

 Gymnogramma cheilantboides. Kaulf. Enum. Fil. p. 71. 



Gymnogramma filipendulaefolia. Desv. Journ. de Bot. \&\3.p. 25. 



Grammitis cheilanthoides. Swartz. Syn. Fil. p. 23. 219 et 41 9. Willd. Sp. Pl. v. 5. p. 143. 



Carmich. in Descr. of the Island of Tristan da Cunha, in Linn. Trans. v. 12. p. 510. 

 Asplenium filipendulaefolium. Pet. Th. Trist. d'Acugn. p.34. t. 4. 



Hab. In Insula Mauritii. Swartz. Tristan da Cunha. Pet. Thouars. Carmichael. 



Stipes "gracilis, laevis, nitidus, hinc sulcatus, nigro-purpurascens, 4 — 5 uncias longus. 



Frons f circumscriptione, lineari-lanceolata, pinnata, pinnis membranaceis, flavo-viridibus, arcte dispositis, ovato- 



cordatis, vix pollicem longis, profunde pinnatifidis ; segmentis superioribus integris vel bifidis, inferioribus 

 iterum pinnatifidis, omnibus oblongis obtusis subincurvis, dorso venisque subtus pilosis. 



Rachis superne pilosus, inferne glaber. 



Sori oblongi, venis lateralibus simplicibus vel furcatis inserti, indusio omnino destituti. 



Capsulce brevissime pediceliatae, annulo incompleto. 



Semina parva, triangularia. 



Fiff. 1. Pinna cum portione rachidis. f. 2. Portio pinnae cum capsulis. f. 3. Capsula dehiscens. f. 4. Semina: 



magn. auct. 





In those Grammitides of Swartz and Willdenow, which have rnuch divided fronds, the nerves are 

 more decidedly furcate than in those with simpler fronds, and the sori have this forked character 



likewise. These species are removed by Desvaux, and we think with propriety, to the genus 

 Gumnogramma. The present is one of the most rare and the most beautiful of the genus. Our 

 specimens were received from Captain CarmichaeL, who gathered them at a considerable elevation 

 on the face of the Table-land, and on a detached hill in the middle of the plain, in Tristan da Cunha. 



