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ee ee ee 
DENNSTAEDTIACEAE, bracken family 
[S, G: POLYPODIACEAE] 
DENNSTAEDTIA, cuplet fern 
Dennstaedtia punctilobula (Michaux) Moore, hay-scented fern, 
p. 20 
PTERIDIUM, bracken 
Pteridium aquilinum (L.) Kuhn, bracken, p. 21 
var. latiusculum (Desv.) Underw. 
var. pseudocaudatum (Clute) Heller 
DRYOPTERIDACEAE, wood-fern family 
[S, G: POLYPODIACEAE; M: ASPLENIACEAE] 
ATHYRIUM, glade fern, lady fern 
Athyrium filix-femina (L.) Roth, lady fern, p. 34 
ssp. angustum (Willd.) R. T. Clausen, northern lady fern [S: 
. michauxii (Sprengel) Farw., incl. f. elatius (Link) 
Clute, f. rubellum (Gilbert) Farw.; G: A. filix-femina 
var. angustum (Willd.) Moore; M: A. angustum (Willd.) 
C. Presl] (Lellinger, 1985) 
ssp. asplenioides (Michaux) Clausen, southern lady fern [S: var. 
asplenioides (Michaux) Farw.; G: A. filix-femina var. 
asplenioides (Michaux) Farw.; M: A. asplenioides 
ichaux] (Lellinger, 1985 
A. pycnocarpon (Sprengel) Tidestrom, narrow-leaved glade fern, 
arrow-leaved spleenwort, p. 
A. thelypterioides (Michaux) Desv., silvery spleenwort, silvery glade 
ern, p. 34 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
