34 NOTHOCLCENA NIVEA. 



The form of the frond is bi-pinnate, with roundish egg-shaped 

 obtuse entire pinnules, which are caudate at the base, the ter- 

 minal one being lobed. Terminal, and attached to a short creep- 

 ing rhizoma. The midrib has dispersed sparingly over it small 

 thin scales, and is partially covered with white farinose powder. 

 The colour of the rachis is ebony black, but not polished. 



The sori are terminal and linear, becoming confluent, forming 

 a broad marginal dark belt, which is a great contrast to the 

 white farinose powder. 



There are two forms of NotliocMoetia nivea, the commoner 

 form is but sparingly scattered over with farinose powder, is 

 more slender, and does not produce so compact a specimen. 



Being a delicate Fern, it requires considerable attention in 

 order to cultivate it successfully. 



This species is a native of Mexico, Peru, and Chili. 



It is included in the Fern catalogues of Messrs. Backhouse, 

 of York; and Messrs. Booth, of Hamburgh. 



By no means a common Fern, in cultivation in Great Britain. 



I am indebted to Mr. Hathorn, gardener to Lord Middleton, 

 for the one form of this Fern; and to Messrs. Booth and Sons, 

 Nurserymen, Hamburgh, for the more slender variety; and also 

 to Mr. Norman, of Hull; and to Mr. Hathorn, for fructified 

 fronds. 



The illustration is from a plant in my own collection. It is 

 the most farinose form of this Fern. 



