ASPLENIUM ADIANTUM-NIGRUM. 



225 



BLACK SPLEENWOET, (one-half the natural size). 



Genus. — Asplenium. (See page 219). 



Species. — Adiantum-nigrtjm. Stipes as long as the frond, 

 dark purple or black at the base : frond elongate-deltoid, pinnate : 

 lowest pair of pinnae always longest ; all the pinnse pinnate ; 

 ultimate divisions obtuse : clusters of capsules linear, approxi- 

 mate to the midrib. 



B^mn^imts, fynm, fe. 



Asplenium Adiantum-nigrum, Linn. Sp. PI. 1541 ; Light/. Fl. 



Scot. 666 ; Huds. Fl. Ang. 454 ; Bolt. Fil. Brit. 30, 1. 17, .3 ; 



With. Arr. 770 ; Sm. E. F. iv. 310, E. B. 1950; Mack. 



Fl. Hib. 342 ; Franc. 49 ; Newm. N. A. 27, F. 255, Phytol. 



App. X. ; Hook, and Am. 573 ; Bab. 414 ; Moore, 155. 



There are good figures of this fern in the ' English Botany,' 



in Bolton's ' Filices,' and in many of the continental works. 



Concerning its nomenclature, there appears no difference of 



2 G 



