144 FERNS OF KENTUCKY. 
show a much closer relationship to the true order of Filices 
than is usually recognized in this genus.” * 
This form of B. ternatum, Swartz, is the B. obliquum 
of Muhlenberg, which, in the earlier editions of Gray’s 
Manual, was reduced to a variety of B. lunarioides, Swartz, 
but Milde’s arrangement is now generally adopted in this 
country, and is undoubtedly most in accordance with 
nature. 
The plate represents a plant of natural size. 
* Vernation in Botrychia, l. c. p. 196. 
