100 FERNS AND THEIR ALLIES 



The fruit-dots are few, large, and soon be- 

 come confluent, nearly covering the entire pin- 

 nule when mature in July. The indusium is 

 membranous and delicate. 



SCOTT'S SPLEENVTORT. 



Aspknimn ebenoides. 



Frond pinnatifid, or often pinnate below, the 

 divisions lanceolate from a broad base, very 

 irregular both in form and length, the lower 

 ones usually a trifle shorter. 



The fronds are from four to nine inches long 

 and are broadly lanceolate in outline, tapering 

 to a long, slender point. 



The stipes are dark and glossy, sometimes 

 slightly shading into the rachis, especially on 

 the under side. 



Scott's Spleenwort is now known to be a 

 hybrid between Ebony Spleenwort, A. eberieum 

 and the Walking Fern, Camptosorus rhizophyl- 

 lus. It bears no marked resemblance to either 

 fern, so it is not difficult to determine. 



It is usually found growing with these two 

 ferns, on cliffs, preferring limestone. It is ex- 

 ceedingly rare here in New England. 



The fruit-dots are arranged in oblique lines, 

 slightly curved, several on each lobe. The 

 indusium is narrow, and reflexed when mature 

 in August. 



