Onoclea

Onoclea
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida /
Pteridopsida (disputed)
Order: Polypodiales
(unranked): Eupolypods II
Family: Onocleaceae
Genus: Onoclea
L. 1753
Synonyms
  • Pentarhizidium Hayata 1928
  • Calypterium Bernh. 1802
  • Ragiopteris C.Presl 1836
  • Riedlea Mirb. 1802
  • Angiopteris Adans. 1763 (nom. illeg.)[1]

Onoclea is a genus of plants in the Onocleaceae family, native to moist habitats in eastern Asia and eastern North America. They are deciduous ferns with sterile fronds arising from creeping rhizomes in spring, dying down at first frost. Fertile fronds appear in late summer. Depending on the authority, the genus contains one to five species.[2]

Onoclea species

Commonly accepted Onoclea species and their synonyms include:

(=) Pterinodes sensibile (L.) Kuntze 1891
(=) Ragiopteris obtusilobata (Schkuhr) C.Presl 1836
(=) Ragiopteris onocleoides C. Presl 1836 (nom. nud.)
(=) Onoclea augescens Link 1841
(=) Onoclea obtusilobata Schkuhr 1809
(=) Riedlea sensibilis (L.) Mirb. 1803
(=) Calypterium sensibile (L.) Bernh. 1802
(=) Pteretis orientalis Ching 1945
(=) Matteuccia japonica (Hayata) C.Chr. 1934
(=) Pentarhizidium japonicum Hayata 1928
(=) Pentarhizidium orientale (Hook.) Hayata 1928
(=) Matteuccia cavaleriana (H.Christ) C.Chr. 1906
(=) Struthiopteris cavaleriana H.Christ 1904
(=) Pterinodes orientalis (Hook.) Kuntze 1891
(=) Matteuccia orientalis (Hook.) Trevis. 1869
(=) Struthiopteris orientalis Hook. 1861
(=) Onoclea sensibilis var. interrupta Maxim. 1859
(=) Pentarhizidium intermedium (C.Chr.) Hayata 1928
(=) Matteuccia intermedia C.Chr. 1913
(=) Onocleopsis hintonii F. Ballard 1945

The following phylogram show a likely relationship between the Onoclea species:[10]

Onoclea


O. orientalis (Pentarhizidium orientale)



O. intermedia (Pentarhizidium intermedium)






O. struthiopteris (Matteuccia struthiopteris)



O. hintonii (Onocleopsis hintonii)





O. sensibilis var interrupta



O. sensibilis var sensibilis





Transferred species

The following Onoclea species have been transferred to other genera as indicated below.

To Blechnaceae

= Blechnum attenuatum (Sw.) Mett. 1856
= Blechnum lineatum (Sw.) C.Chr. 1905
= Blechnum spicant (L.) Sm. 1793 – Deer fern (Europe, western North America)
= Blechnum tabulare (Thunb.) Kuhn 1868
= Blechnum striatum (Sw.) C.Chr. 1905
= Blechnum fragile (Liebm.) C.V.Morton & Lellinger 1967
Blechnum nudum (Labill.) Mett. ex Luerss. 1876
= Stenochlaena palustris (Burm.f.) Bedd. 1876
= Lomaria marattiifolia Desv. 1827

To Gleicheniaceae

= Gleichenia polypodioides (L.) Sm. 1793 (Madagascar, South Africa)
Gleichenia polypodioides (L.) Sw. 1891 (nom. illeg.)

To Polypodiaceae

= Belvisia spicata (L. f.) Mirb. 1803

To other Onocleaceae

Note that some authors consider the genera of the Onocleaceae family to be so similar that they should remain under a single Onolcea genus.[9]

= Matteuccia struthiopteris (L.) Tod. 1866 – Ostrich fern
= Matteuccia struthiopteris var. struthiopteris
= Matteuccia struthiopteris var. struthiopteris

References

  1. Onolclea Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  2. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  3. O. sensibilis Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  4. O. orientalis Flora of Taiwan Checklist at eFloras.org 30 Jan 2012
  5. O. orientalis Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  6. O. interrupta Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  7. O. intermedia Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  8. O. hintonii Tropicos.org. Missouri Botanical Garden. 30 Jan 2012
  9. 1 2 "A linear sequence of extant families and genera of lycophytes and ferns", Phytotaxa 19: 21. 18 Feb 2011
  10. Gastony (1997) Gerald J. Gastony & Mark C. Ungerer: "Molecular systematics and a revised taxonomy of the Onocleoid Ferns (Dryopteridaceae: Onoceeae)" American Journal of Botany 84(6): 840-849, 1997
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