



TAB. XXX. 



ADIANTUM. CUNEATUM. 



FILICES. 



Gy 



RATiE. 



r. 



Polypodiace/e. Kaulf. Filices verae. Willd. 



\ 



Gen. Char. Sori marginales, punctiformes vel lineares. Involucrum e margine frondis replicato, 



disco venoso capsulifero, limbo membranaceo libero. Br. 





Adiantum cuneatum; frondibus triplicato-pinnatis, pinnulis petiolatis cuneatis membranaceis apice 



rotundatis laciniato-bi-trilobatis, lobis profunde emarginatis segmentis falcato-incurvis, sinubus 



soriferis, involucris reniformibus. 

 Adiantum cuneatum. " Langsd. et Fisch. Ic. Fil. p. 23. t. 26." Willd. Sp. Pl. v. 5. /;. 450. 



Raddi Fil. Brasil.p. 59. t.?8.f 



Kaulf. Enum. Fil. p. 206 



Hab. In Brasilia. Langsdorff et Fischer, Chamisso, D a M. Graham, Burchell 

 Vincentii. Rev. L. Guilding. Cult. In Hort. Bot. Liverpool. 



Radix subcaespitosa, fibrosa, fibris ramosis, tomentosis. 



Caudex digitalis ad palmarem, erectus, gracilis, atropurpureus, nitidus. 



Insula Sanct 



Frons, circumscriptione, ovata vel subdeltoidea, triplicato-pinnata 

 Rachis petiolique gracillimi, atro-purpurei, nitidi. 



Pinnulde breviter petiolatae, duas ad quatuor 



membranaceae, glabrae, dichotomo 



lateribus nunc inae qualibus, apice inciso-lobatae, lobis duobus vel tribus ; in frondibus sterilibus, subdentatae : 



in fertilibus, profunde emarginatis, segmentis falcato-incurvis, sinubus fructiferis. 

 Involucrum exacte reniforme membranaceum, pallide fuscum, majusculum, arcte inflexum. 

 Capsulce in disco involucri, sphaericae, fere sessiles, reticulatae, annulatae, annulo incompleto. 

 Semina oblongo-rotundata, vel subreniformia. 

 Fig. 1. Planta juvenis. f. 2. Planta adulta fructifera :— magn. nat. f. 3. Pinnula. f. 4. Involucrum, intus visum 



f. 5. Capsula. f. 6. Semina:— magn. auct. 





There appears to us to be g 



difficulty in determining the species of the genus Adia 



without the aid of figures ; especially of that division which include 



our European A. Capillus 



Feneris, and which division or group is characterized by having petiolated pinnules of a thin mem 

 branaceous texture, and more or less regularly cuneate in form. 



The present plant is allied in general appearance to the species just mentioned, A, Capillus Veneris 



but may be distinguished by 



more compound frond, smaller pinnules, and, essentially, by the 



being placed in the bottom of the sinus of the 



otches. Still nearer does it approach to the 



A. assimile of New Holland (the A. trigonum of Billardiere, Nov. Holl 



) ; and I scarcely 



of the pinnse of our plant, and 

 : add, too, that the segments of 



know how they may be recognized, but by the more decided lobes 



the much deeper notches, within which the fructification is inserted 



these lobes are so incurved and meet together in such a manner as to render the notch itself almost 



obsolete ; so that at first sight the involucra seem to be intramarginal, or upon the disk of the 



pinnula?. 



In Brazil, the A. cuneatum appears to be not uncommon ; and we have received an Adiantum, 



which we can in no way distinguish from it, from St. Vincent, sent by the Rev. L. Guilding 



Messrs. Shepherds received the plant from M. Otto of Berlin, under the name of A. pendulinum 



The 



i 



