TAB. IV. 





ACROSTICHUM RADDIANUM. 



FILICES. — Gyratje. Br. Polypodiace^. Kaulf. Filices verae. Willd. 



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Gen. Char. ACROSTICHUM, Linn. Sori amorphi, seu Capsula per totam paginam inferiorem 



frondis (interdum diversae) vel ad ejus partem sparsae. Indusium nullum (nisi squamulae v. setae 

 in quibusdam capsulis interstinctae) . JBr. 







Acrostichum Raddianum ; frondibus stipiteque villosissimis, sterilibus lineari-lanceolatis, fertilibus 



ellipticis integris. 



f 



Acrostichum spathulinum. Raddi, Fil. Brasil. p. 3. t. 15. f 2. 



Hab. In udis rupibus torrentium super Montes Estrellenses, Brasiliae. Raddi. 



Radix dense caespitosa, fibris valde ramosis subpinnatis. 



Stijpites plurimi ex eadem radice, 2 — 3 uncias longi, erecti, densissime pilosi, pilis patentibus rufescentibus 



Frondes steriles S 



longae, lineari-lanceolatae, obtusae, basi sensim in petiolum attenuatae, utrinque mar- 



gineque ferrugineo-pilosae. Hi pili sub lente serrulati sunt, basi dilatati, concavi, reticulati, membranacei 

 fertiles sterilibus multo breviores, ellipticae, acutiusculae, dorso niargineque solummodo pilosae. 

 Capsulce totam frondem dorso tegentes, longe pedicellatae, sphaericae, late annulatae, annulo incompleto. 



Semina parva, sphaerica. 



Fig. 1. Pilus vel squama. f. 2. Capsulae. f. 3. Semina: — magn. auct. 





We have changed the name which Professor Raddi applied to this Fern, because of its similarity 



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with that of spathulatum, given by Bory de St. Vincent to a species of the Isle of France, and which, 



ire in the Voyage aux Quatres Isles des Mers d'Afrique, we 



far 



as we 



judge from the fig 



agree with Raddi in considering very nearly indeed allied to the present ; dhTering almost solely 

 the very obtuse and emarginate extremity of the fertile fronds. 



