Revision of Batrachospermum Section Virescentia (Batrachospermales, Rhodophyta) with the Establishment of the New Genus, Virescentia Stat. nov.
Revision of Batrachospermum Section Virescentia (Batrachospermales, Rhodophyta) with the Establishment of the New Genus, Virescentia Stat. nov.
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DOI：
10.7872/crya/v39.iss3.2018.313
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发表时间：
2018-08
期刊：
影响因子：
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通讯作者：
O. Necchi;Douglas de Castro Agostinho;M. L. Vis
中科院分区：
文献类型：
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作者：
O. Necchi;Douglas de Castro Agostinho;M. L. Vis
摘要近年来，利用DNA序列数据和形态学资料，对并系属Batrachospermum的部分进行了研究，并将一些部分上升为属，以解决这一并系问题。Batrachospermum组Virescentia的物种形成了一个支持良好的分支，我们建议提高本节属Virescentia统计。此外，我们重新评估的字符用于限制物种的模式标本和新的收藏在历史上重要的地区进行重新检查。在已知的11个种中，我们确认了5个种，并提出了1个新种，它们是：皱皱弧菌（V. crispata），古本氏弧菌（V. gulbenkiana）（合目V. azeredoi和V. ferreri），蠕虫弧菌（V. helminthosa）（模式种），绿色弧菌（V. viride-americana sp. nov.）V. viride-brasiliensis和V. vogesiaca。该物种是基于形态特征（束状花序的形状，次生束状花序的发生，果核分支的配置和果核的大小），地理分布和DNA序列数据（rbcL和COI-5 P）。描述，识别码和显微照片，为每个公认的种。由于缺乏形态学观察的凭证标本，基于DNA序列数据来自日本的两个潜在种仍未描述。其他先前被分配到Virescentia组的物种根据形态（果殖子分支的配置，毛果的形状，生殖细胞丝的类型和果孢子体的排列）被称为Batrachospermales的其他属。
Abstract 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).