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5. Asplenium Spleenwort 
(A, without; splene, spleen; for supposed medicinal virtues) 
Lvs. in circular groups, 1-3-pinnate. Sporangia in elongate 
dots roofed over by a membrane (indusium) rising from one side 
of dot; or, the dot curved, and the indusium appearing centrally 
attached. 
1. A. eilix-EoEmina Female A. Lady fern 
Lvs. twice pinnate, the leaflets sharply toothed ; 4-10dm. tall, 
8-12cm. wide. Spore dots often curved, and finally covering the 
whole If It. Indusium visible only in young specimens. 
Woods, common. 
Sugar Creek; Jones Grove; Moore. 
All over n. temp. zone. 
July. 
6. Camptosorus Walking leaf. 
(Kamptos, flexible; sorus, fruit dot; from the connected crooked lines of fruit 
dots) 
Lvs. simple, smooth edged, heart shaped at base, l-2cm. wide 
tapering to a very long slender tip, and rooting again at tip; 6-15 
cm. long; thick and firm. 
Sori oblong or linear, irregularly scattered on the netted veins, 
with indusium as in Asplenium. 
1. C. rhizophyllus Root-leaf C. 
Characters of the Genus. 
Limestone rocks, rare. 
Eldora. 
N. S. to N. Car., Minn, and Kan. 
7. Polystichum 
(Poly, many; stichos, row; the spore dots of some species being in several rows) 
Lvs. in circular groups, thick and firm, evergreen, once pinnate; 
stalks very chaffy. Spore dots circular, the indusiurh circular 
and attached precisely by the middle. 
1. P. acrostichoidES Acrostichum-like P. Christmas Fern 
Lvs. 3-5 times longer than broad. (-2- 5 dm. x 6-1 Ocm.) ; If Its. 
narrow, with a lobe on one side at base, margins bristle toothed. 
Spore-bearing If Its. at top of If., distinctly contracted in size; 
spore dots in 2 rows, becoming continuous when old. 
Rocky woods, very rare here; common eastward. 
Muscatine, la. ; rarely cult, in Grinnell. 
N. B. to Fla., Wis. and Miss. 
