Revision ofBatrachospermumSectionVirescentia(Batrachospermales, Rhodophyta) with the Establishment of the New Genus,VirescentiaStat. nov
| Autor: | Douglas De Castro Agostinho, Orlando Necchi, Morgan L. Vis |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Paraphyly biology 010604 marine biology & hydrobiology Biogeography Zoology Identification key Plant Science Aquatic Science biology.organism_classification 01 natural sciences Batrachospermales 03 medical and health sciences Type species 030104 developmental biology Genus Taxonomy (biology) Clade Ecology Evolution Behavior and Systematics |
| Zdroj: | Cryptogamie, Algologie. 39:313-338 |
| ISSN: | 1776-0984 0181-1568 |
| DOI: | 10.7872/crya/v39.iss3.2018.313 |
| Popis: | In recent years, sections of the paraphyletic genus Batrachospermum have been investigated using DNA sequence data, as well as morphology and some have been raised to genera in order to resolve this paraphylly. The species of Batrachospermum section Virescentia form a well-supported clade and we propose the raising of this section to the genus Virescentia stat. nov. In addition, we re-evaluated the characters used to circumscribe species by reexamination of type specimens and new collections in historically important areas. Of the eleven previously accepted species, we recognize five species and a new species is proposed as follows: V. crispata, V. gulbenkiana (synomyms V. azeredoi and V. ferreri), V. helminthosa (type species), V. viride-americana sp. nov., V. viride-brasiliensis and V. vogesiaca. The species are circumscribed on the basis of morphological characteristics (shape of fascicles, occurrence of secondary fascicles, disposition of carpogonial branches and size of carpogonia), geographic distribution, and DNA sequence data (rbcL and COI-5P). Descriptions, identification key and photomicrographs are presented for each recognized species. Two potential species from Japan based on DNA sequence data remained undescribed due to lack of voucher specimens for morphological observation. Other species previously assigned to the section Virescentia are referred to other genera of Batrachospermales based on morphology (disposition of carpogonial branches, shape of trichogynes, types of gonimoblast filaments and arrangement of carposporophytes). |
| Databáze: | OpenAIRE |
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