Family Polypodiaceae

Recent molecular phylogenic analysis has lead to the divison of the Polypodiaceae into five subfamiles, and to the inclusion of genera that have at various times been placed in other families, including the Drynariaceae, Grammitidaceae, Gymnogrammitidaceae, Loxogrammaceae, Platyceriaceae, and Pleurisoriopsidaceae.[1] In the list that follows, the taxa shown with the "(=)" prefix are considered to be synononyms for the accepted subfamily name that they follow. However, this does not necessarily imply that the subfamily contains all of the synonym's previous genera.

(=) tribe Loxogrammeae R.M.Tryon & A.F.Tryon 1982
(=) family Loxogrammaceae Ching ex Pic.Serm. 1975
Lacks sclerenchyma (supporting tissue) in plant body, except in the roots.[2]
(=) tribe Drynarieae Subh.Chandra 1982
(=) tribe Selligueeae (author?)[2]
(=) family Drynariaceae Ching 1978
Combines drynarioid and selligueoid ferns
(=) family Platyceriaceae Ching 1978
Fronds with stellate (radiating from central point) hairs.[2]
(=) tribe Microsoreae V.N.Tu 1981
(=) tribe Polypodieae Hooker & Lindley ex Duby (sensu Mabberley 2008)
  • Non-grammitid ferns:
  • Grammitid ferns (includes family Grammitidaceae)

Phylogeny

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The following phylogram shows a likely relationship between the Polypodiaceae subfamilies.[3]

Polypodiaceae

Grammitids

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Acrosorus Calymmodon Ctenopterella Dasygrammitis Grammitis Leucostrichum Luisma Oreogrammitis Prosaptia Radiogrammitis Scleroglossum Themelium Tomophyllum Xiphopterella Xiphopteris Zygophlebia

References

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  1. ^ Christenhusz et al.: A linear sequence of extant families and genera of lycophytes and ferns Phytotaxa 19: 7-54. (18 Feb. 2011)
  2. ^ a b c D. J. Mabberley (2008). Mabberley's plant-book: a portable dictionary of plants, their classification and uses. Cambridge University Press. p. 690. ISBN 9780521820714.
  3. ^ Schuettpelz (2008) Schuettpelz & Pryer "Fern pylogeny" in Biology and Evolution of Ferns and Lycophytes], ed. Tom A. Ranker and Christopher H. Haufler. Cambridge University Press 2008