276 AMERICAN MIDLAND NATURALIST 
Struthiopterrs Cordi var. y, Haller, St. Helv. p. 149 (1742). 
Onoclea Struthiopteris (Linn.) Hoffm., Deutsch. Fl. 2: 11, (1795) 
Osmunda Struthiopteris Linn. Sp. Pl. p. 1066. (1753). 
Near Woodland, Ind. (St. Joseph Co.). In a Tamarack bog. 
CYSTOPTERTS Bernh. Schrad:; “Neties Jr. "Bote eee 
26 (1806). 
Filix Adanson*, Familles. des Plantes 2: 20, (1763). 
Cystopteris fragilis (Linn. 1762) Bernh. Schrad. Neues Jr. 
Bot. 1: ‘pt. 2, 27. (1806). Cyclopterts fragilis S. F. Gray. Wat 
Ath et nel. ao (rsom): 
Polypodium Filix fragiuet Limn. Sp. Pl. p. 1091, 7G 753). 
Polypodium fragile Linn., Sp. Pl. 2nd ed. p. 1553 (1763), also 3rd ed. 
Filix fragilis Underwood, (1900). Cystopteris Filix fragilis. See 
Ams Mid= Nat. Vol. 2) .Nowk (1917): 
This plant is our common Brittle Fern and I have found 
it in all the counties of both states in our region. No. 407 Notre 
Dame, also 3398 (St. Joseph Co.) No. 9341 Smith, Ind. (Laporte 
Co.). 
DENNSTAEDTIA Bernh.. Schrad: Jr. (1800) 124(rsome 
Dicksoma L’ Herit. Sert. Angl., 30 (1788). 
Dennstaedtia punctilobula (Michx.) Moore, Ind., XCVII 
(1857). 
Dicksonia punctilobula (Michx.) A. Gray, Man. p. 628 (1848). 
Nephrodium punctilobulum Michx. Fl. Bor. Am. 2: 268 (1803). 
Though I have never found this plant within the limits of the 
region, the fact of its having been reported from Steuben Co. 
makes it possible that it may yet be found. 
*The name Fvlix, or translated literally ‘“‘fern’’, was applied so generally 
by pre-Linneaan botanists to many genera promiscuously that its use for 
any one is highly objectionable. It is not beyond doubt that Fuchs’ use 
of Ft.ix as a name was meant as a generic designation or simply a ‘‘kind 
of fern.’? Adanson’s use therefore would be a synonym for the name used 
by Fuchs, and Fuchs’ designation is doubtful. Hence the inappropriate 
name Faix had better be entirely rejected. See note under Aspidium. 
+The use of the trivial name, Fi ix fragilis without the hyphen would 
be the correct use after Cystopieris or Faix as Cystopterts Fux fragilis _ 
or Filix Filix fragilis, for thoce who claim to follow the rules of the codes, 
but there does not seem to be much consistency of authors in this matter, 
For further discussion of the subject see Am, Min, Nat, vol. II. pp. 97-122. 
