32 CHEILANTHES ARGENTEA. 



The frond triangular in form, glabrous, cordately five-angled, 

 and tripartite; the three primary divisions pinnatifid, their 

 base bipinnatifid; pinnae opposite, the basal pair auriculate 

 below. The frond somewhat concave; margin of frond crenate. 



Rachis and stipes ebeneous, of a reddish colour, slightly 

 hairy near the base, and destitute of farinose powder. Rhizoma 

 short, thick, and creeping. 



Veins forked. 



Sori everywhere continuous; indusium very broad, transversely 

 waved, and crenated. Seed-vessels black and copious, giving 

 the frond the appearance of a marginal black belt. 



Length of frond four inches, of which the lower two inches 

 and a quarter is naked. 



This species I raised from spores gathered in Siberia. 



It may be procured of Messrs. Veitch, of Chelsea; Cooling, 

 of Derby; and Booth, of Hamburg. 



The illustration is from a plant in my own collection. 



