ASPLENIUM. 



533 



of a parchment-like texture, not more than one line broad and with smooth 

 edges. The sori (spore masses) are solitary at the base of each pinnule. — 

 Hooker, Species Filicum, hi., p. 204. 



A. (Euasplenium) divergens— Eu-as-ple'-ni-um ; di-ver'-gens (divergent), 

 Mettenius. 



This is a stove species, native of Brazil and Ecuador, which, though 

 attaining medium dimensions, is of very little decorative value, its very 

 leathery fronds possessing no particularly distinctive characters. — Hooker, 

 Species Filicum, hi., p. 183. 



A. diYersifolium — di-ver-sif-ol'-i-um (having fronds of different forms). 

 A garden synonym of A. dimorphum. 



A. (Darea) Dregeanum — Da'-re-a ; Dre-ge-a'-num (Drege's), Kunze. 



This stove species, native of Natal, is one of the few Aspleniums that 

 root at the extremity of the fronds. It has the same flaccid character and 

 habit as A. brachypteron, with which it is regarded by Mettenius as synony- 

 mous. — Hooker, Species Filicum, hi., p. 214. 



A. (Euasplenium) ebenoides — Eu-as-ple'-ni-uin ; eb-en-o-i'-des (ebenum- 

 like), B. R. Scott. 



This most singular, greenhouse Fern, of truly North American origin, 

 was first discovered on the limestone cliffs of the Schuylkill River, near 

 Philadelphia ; it was eventually gathered near Havana, Central Alabama, and 

 on limestone rocks in Canaan, Connecticut. Eaton, in his excellent work 

 devoted to North American Ferns, says (vol. i., p. 26) : "It is singular that, 

 although found in several and widely- distant localities, this Fern has always 

 been met with in the immediate company of the 'Walking Leaf {Camptosorus 

 rhizophyllus) and of A. ebenum. While it differs from the first by its dark 

 and shining stalk and rachis and its free veins, as also by its pinnatifid or 

 sub-pinnate frond, it resembles it strongly in the prolonged and slender apex, 

 in the irregular sori, and especially in its proliferous habit ; and, in the 

 very respects in which it differs from this, it resembles the other. For these 

 reasons, the Rev. M. J. Berkely, in his notice in the ' Journal of the Royal 

 Horticultural Society,' 1866, p. 87, is strongly inclined to suspect that it is 



