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Pteridophyte Phylogeny Group (PPG) taxonomic system for ferns and lycophytes
https://pteridogroup.github.io/
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Recognition of Strophocaulon as a segregate of Sphaerostephanos (Thelypteridoideae; Thelypteridaceae) [PASSED] #60

Open susanfawcett opened 10 months ago

susanfawcett commented 10 months ago

Author(s) of proposal

Susan Fawcett and Alan R. Smith

Name of taxon

Strophocaulon

Rank of taxon

Genus

Approximate number of species affected

2

Description of change

Two species of Sphaerostephanos are transferred to the genus Strophocaulon S.E. Fawc. & A.R. Sm.

Reason for change

The two sister species segregated as Strophocaulon were treated in Sphaerostephanos s.l. They are distinct in having long-creeping subterranean rhizomes, and tending to form large colonies in open habitats, are resolved as sister to a large clade including the genera Sphaerostephanos s.s., Pneumatopteris, Reholttumia and Pronephrium.

For keys and morphological descriptions, see Fawcett & Smith 2021. For phylogenetic analyses, see Fawcett et al. 2021.

Fawcett_Smith_2021.pdf Fawcett_2021_GlobalPhylogeny.pdf

Fawcett, S. and A. R. Smith. 2021. A Generic Classification of the Thelypteridaceae. Sida, Botanical Miscellany 59. Fort Worth: Botanical Research Institute of Texas Press.

Fawcett, S., Smith, A.R., Sundue, M., Burleigh, J.G., Sessa, E.B., Kuo, L.Y., Chen, C.W., Testo, W.L., Kessler, M. and Barrington, D.S., 2021. A global phylogenomic study of the Thelypteridaceae. Systematic Botany, 46(4), pp.891-915.

Fawcett, S., A. R. Smith, M. Sundue, J. G. Burleigh, E. B. Sessa, L.-Y. Kuo, C.-W. Chen, W. L. Testo, and M. Kessler. GoFlag Consortium, and D. S. Barrington. 2021. Data from: A global phylogenomic study of the Thelypteridaceae. Dryad Digital Repository. https: doi.org/10. 5061/dryad.gxd2547j4.

Holttum, R. E. 1977. The family Thelypteridaceae in the Pacific and Australasia. Allertonia 1: 169–234.

Holttum, R. E. 1982. Thelypteridaceae. Flora Malesiana, ser. II 1: 334–560.

Reference(s) for publication of the name

Fawcett_Smith_2021.pdf

List the numbers of any related issues

No response

Code of Conduct

joelnitta commented 8 months ago

This proposal was voted on during PPG Ballot 7 (voting period January 2024). A total of 75 votes were cast. There were 74 'Yes' votes (98.7%) and 1 'No' votes (1.3%). The proposal passes.