6 GYMNOGRAMMA CALOMELANOS. 



whilst beneath it is rendered of a dull creamy white, from 

 the farinose powder spread over it| the stem of the young 

 frond is densely covered with this powder. The form of the 

 frond is bi-subtripinnate, with lanceolate-acuminate pinnules, 

 and lengthened acuminate-lobed segments. The pinnae stand 

 up vertically from the midrib to which they are attached, 

 the midrib consequently being in a hollow between them, whilst 

 their sections curl down, leaving the central vein, to which 

 they also are attached, above them. The fronds spring from 

 all round the crown of the rhizoma, bending outwards and 

 ultimately weeping at the apices, leaving the plant very hollow 

 in the centre. 



The sori are branched, medial, oblique, and confluent, indeed 

 very nearly covering each segment. 



Mr. Moore remarks in his "Genera, and species of cultiva- 

 ted Ferns," that Gymnogramma calomelanos not unfrequently 

 goes under the name of G. peruviana, in the English gardens. 



The same cultivation as G. chrysophylla suits this Fern^ 

 it however requires a larger pot than that species. 



This species is raised freely from sporules. It is in the Fern 

 catalogues of the before-named nurserymen. 



The illustration is from a very fine specimen in my own 

 collection. 



