Taxonomic Revision of the Fern Genus <i>Ctenitis</i> (Dryopteridaceae) from Africa and the Western Indian Ocean

Duan, Yifan; Hennequin, Sabine; Rouhan, Germinal; Bassüner, Burgund; Zhang, Libing

doi:10.3417/2016024

Cited by 20 publications

(30 citation statements)

References 33 publications

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“…Ching (≡ Lastrea distans Brack.). Circumscription sensu Wang et al (), Liu et al (), and Duan et al (). Includes: Ataxipteris Holttum; Pseudotectaria Tardieu.…”

Section: Classificationmentioning

confidence: 99%

A community‐derived classification for extant lycophytes and ferns

2016

J of Sytematics Evolution

1,177

273

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Phylogeny has long informed pteridophyte classification. As our ability to infer evolutionary trees has improved, classifications aimed at recognizing natural groups have become increasingly predictive and stable. Here, we provide a modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community‐based approach. We use monophyly as the primary criterion for the recognition of taxa, but also aim to preserve existing taxa and circumscriptions that are both widely accepted and consistent with our understanding of pteridophyte phylogeny. In total, this classification treats an estimated 11 916 species in 337 genera, 51 families, 14 orders, and two classes. This classification is not intended as the final word on lycophyte and fern taxonomy, but rather a summary statement of current hypotheses, derived from the best available data and shaped by those most familiar with the plants in question. We hope that it will serve as a resource for those wanting references to the recent literature on pteridophyte phylogeny and classification, a framework for guiding future investigations, and a stimulus to further discourse.

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“…Ching (≡ Lastrea distans Brack.). Circumscription sensu Wang et al (), Liu et al (), and Duan et al (). Includes: Ataxipteris Holttum; Pseudotectaria Tardieu.…”

Section: Classificationmentioning

confidence: 99%

A community‐derived classification for extant lycophytes and ferns

2016

J of Sytematics Evolution

1,177

273

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“…C. Chr. (now in Dryopteridaceae; Liu et al, ; Duan et al, ), Cyclopeltis J. Sm. (now in Lomariopsidaceae; Lu & Li, ), Pleocnemia C. Presl (now in Dryopteridaceae; Liu et al, , ), and another 10 segregates of Tectaria Cav.…”

Section: Introductionmentioning

confidence: 99%

Pteridryaceae: A new fern family of Polypodiineae (Polypodiales) including taxonomic treatments

Zhou

Zhang

et al. 2018

J of Sytematics Evolution

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We undertook phylogenetic analyses to resolve the relationships of Pteridrys and related taxa based on six plastid markers (atpA, atpB, matK & rps16‐matK, rbcL, rps4 & rps4‐trnS, and trnL & trnL‐F) and nuclear pgiC. We included 195 accessions representing approximately 147 species in 38 genera, and seven of the nine families in Polypodiineae (eupolypods I). Tectariaceae s.l. (i.e., Arthropteris, Draconopteris, Hypoderris, Malaifilix, Pteridrys, Tectaria, and Triplophyllum in addition to Polydictyum) is recovered as monophyletic (97% maximum likelihood bootstrap value), but with low (<50%) maximum parsimony jackknife value. The family Tectariaceae s.l. is therefore the only family in ferns without a corresponding non‐parametric‐based strong support in spite of our data totaling 9616 aligned base pairs. Tectariaceae s.l. can not be unambiguously recognized by any of the 13 morphological characters analyzed. However, if the clade composed of Draconopteris, Malaifilix, Polydictyum, and Pteridrys (DMPP) is recognized as a distinct family, at least four morphological characters enable the distinction of the DMPP clade from its sister clade. Considering the uncertainty in the monophyly, the diagnosability, and the deep divergence, we propose to establish a new family, Pteridryaceae, to accommodate the DMPP clade. Species of Pteridryaceae share mostly the following characteristics: erect to suberect rhizomes, reduced basal pinnae, anastomosing or free venation, absence of catenate hairs at the leaf surface, and perine ornamentation lacking spines or spinules. Identification keys are provided for the four genera and 31 species of the DMPP clade (or Pteridryaceae). Reflecting the presented results, the recognition of Arthropteridaceae is the preferred taxonomic status of the Arthropteris clade.

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“…Haplopolystichum Tagawa (1940: 122) following Kung et al (2001) and Zhang & Barrington (2013). No modern taxonomic revision based on morphology and DNa data [e.g., Duan et al 2017a on Ctenitis (C.Christensen 1911: 77) C. Christensen (1938: 544)] of the section has been conducted yet. This section is one of the nine sections in P. subg.…”

Section: Discussionmentioning

confidence: 99%

Polystichum alluvium (subg. Haplopolystichum; Dryopteridaceae), a new cave species from Guizhou, China, with reference to new distribution records of P. leveillei

Duan

Zhang

2017

Phytotaxa

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Abstracta new fern species, Polystichum alluvium, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described from guizhou Province in Southwest China. Polystichum alluvium is similar to P. lanceolatum in having small habit and subcoriaceous pinnae, but the former has oblanceolate laminae with basal pinnae strongly contracted toward lamina base, deltoidovate and sessile pinnae, and very short spinules on acroscopic pinna margins or no spinules, while the latter has lanceolate laminae with basal pinnae not contracted toward lamina base, oblong and petiolate pinnae, and long spinules on acroscopic pinna margins. Polystichum alluvium was found from the alluvial bottom of a karst cave at an elevation of 1410 m with humid and shady conditions and is currently known from one population with ca. 50 plants in western guizhou. It is classified as Critically Endangered (CR) following IuCN Red List criteria. We also expanded the distribution of P. leveillei to southern-central guizhou based on our new collections.

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Taxonomic Revision of the Fern Genus Ctenitis (Dryopteridaceae) from Africa and the Western Indian Ocean

Cited by 20 publications

References 33 publications

A community‐derived classification for extant lycophytes and ferns

A community‐derived classification for extant lycophytes and ferns

Pteridryaceae: A new fern family of Polypodiineae (Polypodiales) including taxonomic treatments

Polystichum alluvium (subg. Haplopolystichum; Dryopteridaceae), a new cave species from Guizhou, China, with reference to new distribution records of P. leveillei

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