\ 
*** Lower pinnae ttnequally triangulai'-ovate, 
p, D. spinulosa dilatata (Hoffm.) Underw. 
Polypodtzim dilatatitm Hoffm. 1796. Deutsch. 
Fl. 2:7. 
Plants 6 dm. more or less high ; leaves usually 3-pin- 
nate below, oblong-ovate ; pinnae (except the lowest pair) 
oblong-lanceolate, 15 cm. or less 1. ;pinnules oblong, 
pinntifid or pinnate, the inferior ones of the lowest pair 
of pinnae much elongated ; ultimate segments spinulose- 
dentate or incised. 
White Top Mt., Va., 5;;^^//. 
19. F!LIX Adans. 
This Jiame is the' classic 7ta?ne for fern. Its earliest 
7ise in the prese7it. sense dates from 176J (Adanson^ 
F'arn. 2 ; 20, SS^')i '^'^^^ it was applied to Filix bac- 
cifcra Corit, 5. ( Polypodiu?n bulbiferzLin L/) 
Som^vvhiit delicate ferns. Rootstock short and stout or 
long, creeping. Leaves variable, usually 2-3pinnate, thin, 
membranous. Sori small, situated at about the middle 
of the veinlets. Indusia delicate 
t Leaves biilbiferous apex attenuate. 
1. F. bulbifera (L.) Underw. 
Polypodi2L7n bulbifertim L. Sp. PI. 1091. 
48 
