Adiantaceae vs. Pteridaceae - which name to use?

John McNeill johnm at ROM.ON.CA
Fri Feb 12 13:26:21 CST 1999

Adolf:  Of course, it does depend on where one places the genus
_Pteris_.  I think the clearest recent discussion of the topic is that
in volume 2 of the Flora of North America, pages 122-123. Oxford Univ.
Press, New York (1993).  This is accessible on the Web (normally but the site is currently being updated).  The
specific discussion to which I refer is currently viewable from:
with "T42000389" replacing "viewer" for the precise pages. John.
      John McNeill, Director Emeritus, Royal Ontario Museum,
      100 Queen's Park, Toronto, Ontario, M5S 2C6, Canada.
      Telephone and fax number:  416-586-5744
      e-mail: johnm at

______________________________ Reply Separator _________________________________
Subject: Adiantaceae vs. Pteridaceae - which name to use?
Author:  Adolf Ceska <aceska at VICTORIA.TC.CA> at Internet
Date:    12/02/99 12:39 PM

When I was asked how to order pteridophytes in a mid-size herbarium
(200,000 specimens of vascular plants) I suggested using Polypodiaceae
sensu lato. I have always had problems finding the genus Cryptogramma, as
it has moved around several families like a foster child.

I wonder, when I want to treat Cryptogramma, Adiantum, Pentagramma,
Ptelea, etc. together, do they belong to Adiantaceae or to Pteridaceae? I
understand that "Adiantaceae" is a conserved name, but only against
"Parkariaceae." Am I right? It may all depend on where I would put the
genus Pteris (the family on its own, or together with Adiantum?), but
since Pteris does not occur in my area of interest, I don't have to care.

I would greatly appreciate your help.

Adolf Ceska, Victoria, B.C., Canada

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