Abstract:
:New molecular and morphological insights are presented on Campylosira africana and two new species, Extubocellulus cupola sp. nov. and Plagiogrammopsis castigatus sp. nov. Species descriptions were based on LM/SEM micrographs and a data set with concatenated sequences of SSU, rbcL and psbC loci constructed from 56 cymatosiroid strains isolated from global geographic locations. Extubocellulus cupola is distinguished by a mesh-like marginal ridge and dome-shaped areolation, and P. castigatus, by a prominent marginal extension at the valve center. Campylosira africana, a species from South Africa described by Professor Malcolm Giffen, has never been documented through LM or SEM, which led some authors to place it in synonymy under Campylosira cymbelliformis. We confirm that C. africana is a distinct species and provide microphotographic documentation and DNA sequences. We present morphological evidence for the well-known cymatosiroid species Extubocellulus spinifer possessing complete pili, and we emend the generic description of Extubocellulus.
journal_name
J Phycoljournal_title
Journal of phycologyauthors
Dąbek P,Ashworth MP,Górecka E,Krzywda M,Bornman TG,Sato S,Witkowski Adoi
10.1111/jpy.12831subject
Has Abstractpub_date
2019-04-01 00:00:00pages
425-441issue
2eissn
0022-3646issn
1529-8817journal_volume
55pub_type
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