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Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Diplaziopsidaceae
X.C.Zhang & Christenh.

See text.

  • Diplaziopsidoideae Christenh.

Diplaziopsidaceae is a family of ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Aspleniineae, and includes two genera.[2] Alternatively, it may be treated as the subfamily Diplaziopsidoideae of a very broadly defined family Aspleniaceae.[1]

They are described as medium-to-large ferns, which grow near streams in forested areas. Their rhizomes are thick and decumbent to erect.[3] Species are found in east Asia, from China south to New Guinea and east into the Pacific.[4]


Maarten J. M. Christenhusz and Xuan-Chun Zhang originally described the family in 2011 by including three genera Diplaziopsis, Hemidictyum, and Homalosorus.[3] Later that year Samuli Lehtonen found Hemidictyum to be a sister to Aspleniaceae,[5] so Hemidictyum was placed in its own family, Hemidictyaceae.[6] Christenhusz and Mark W. Chase later included Hemidictyum in their subfamily Asplenioideae rather than their subfamily Diplaziopsidoideae.[1]


Two genera are accepted in the PPG I classification, and by the Checklist of Ferns and Lycophytes of the World as of November 2019:[2][4]

Phylogenetic relationships[edit]

The following cladogram for the suborder Aspleniineae (as eupolypods II), based on Lehtonen, 2011,[5] and Rothfels & al., 2012,[7] shows a likely phylogenetic relationship between the Diplaziopsidaceae and the other families of the clade.

Aspleniineae (eupolypods II)












  1. ^ a b c Christenhusz, Maarten J.M. & Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (9): 571–594. doi:10.1093/aob/mct299. PMC 3936591. PMID 24532607.
  2. ^ a b PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229.
  3. ^ a b Maarten J. M. Christenhusz; Xian-Chun Zhang; Harald Schneider (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. doi:10.11646/phytotaxa.19.1.2.
  4. ^ a b Hassler, Michael & Schmitt, Bernd (November 2019). "Diplaziopsidaceae". Checklist of Ferns and Lycophytes of the World. 8.11. Retrieved 2019-11-27.
  5. ^ a b Samuli Lehtonen (2011). "Towards Resolving the Complete Fern Tree of Life" (PDF). PLoS ONE. 6 (10): e24851. doi:10.1371/journal.pone.0024851. PMC 3192703. PMID 22022365.
  6. ^ Maarten J. M. Christenhusz; Harald Schneider (2011). "Corrections to Phytotaxa 19: Linear sequence of lycophytes and ferns" (PDF). Phytotaxa. 28: 50–52. doi:10.11646/phytotaxa.28.1.6.
  7. ^ Carl J. Rothfels; Anders Larsson; Li-Yaung Kuo; Petra Korall; Wen- Liang Chiou; Kathleen M. Pryer (2012). "Overcoming Deep Roots, Fast Rates, and Short Internodes to Resolve the Ancient Rapid Radiation of Eupolypod II Ferns". Systematic Biology. 61 (1): 490–509. doi:10.1093/sysbio/sys001. PMID 22223449.