A new freshwater species Achnanthes licunese sp. nov. (Achnanthaceae, Bacillariophyta) from pebbles of Licun River, Shandong Province, China

IF 1 4区生物学 Q3 PLANT SCIENCES

Phytotaxa Pub Date : 2024-05-16 DOI:10.11646/phytotaxa.649.1.4

WEI CHEN, PAN YU, GAOFEI SONG, REDIAT ABATE

引用次数: 0

Abstract

A new freshwater diatom species, Achnanthes licunese sp. nov., was found on pebble samples collected from Licun River in Shandong Province, China. The various taxonomic characteristics of Achnanthes licunese sp. nov. is observed under light and scanning electron microscope. The living cells of A. licunese sp. nov. possesses two chloroplasts. Its valves exhibit a linear to linear-lanceolate outline, slightly constricted in the middle part, with uniseriate striae. The central area of the raphid valves is expanded into a linear and thickened stauros, and the raphe is filiform. On the araphid valves, there is no central area, and the axial area (sternum) is located in the valve margin. The valve of the A. licunese sp. nov. possesses the marginal spines, but no marginal ridge and terminal orbiculi. By comparing the new species with similar Achnanthes species, A. licunese sp. nov. was confirmed to be sufficiently different regarding valve size, striae density, and the presence of marginal spines. The discovery of this species increases the diversity of freshwater diatoms.

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中国山东省李村河卵石中的淡水新种 Achnanthes licunese sp.

在中国山东省李村河采集的卵石样品中发现了一个新的淡水硅藻物种Achnanthes licunese sp.nov.。在光镜和扫描电镜下观察了Achnanthes licunese sp.A. licunese sp. nov.的活细胞具有两个叶绿体。它的裂爿呈线形或线状披针形，中间部分略有缢缩，有单列条纹。鳞片状裂爿的中央部位膨大成线状，并有加厚的柱头，裂爿呈丝状。在石花菜瓣膜上，没有中央区，轴区（胸骨）位于瓣膜边缘。licunese sp. nov.的瓣膜具有边缘刺，但没有边缘脊和末端眼轮。通过将该新种与类似的 Achnanthes 物种进行比较，证实 A. licunese sp.该物种的发现增加了淡水硅藻的多样性。

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来源期刊

Phytotaxa PLANT SCIENCES-

CiteScore

1.90

自引率

27.30%

发文量

956

审稿时长

1 months

期刊介绍： Phytotaxa is a peer-reviewed, international journal for rapid publication of high quality papers on any aspect of systematic and taxonomic botany, with a preference for large taxonomic works such as monographs, floras, revisions and evolutionary studies and descriptions of new taxa. Phytotaxa covers all groups covered by the International Code of Nomenclature foralgae, fungi, and plants ICNafp (fungi, lichens, algae, diatoms, mosses, liverworts, hornworts, and vascular plants), both living and fossil. Phytotaxa was founded in 2009 as botanical sister journal to Zootaxa. It has a large editorial board, who are running this journal on a voluntary basis, and it is published by Magnolia Press (Auckland , New Zealand). It is also indexed by SCIE, JCR and Biosis. All types of taxonomic, floristic and phytogeographic papers are considered, including theoretical papers and methodology, systematics and phylogeny, monographs, revisions and reviews, catalogues, biographies and bibliographies, history of botanical explorations, identification guides, floras, analyses of characters, phylogenetic studies and phytogeography, descriptions of taxa, typification and nomenclatural papers. Monographs and other long manuscripts (of 60 printed pages or more) can be published as books, which will receive an ISBN number as well as being part of the Phytotaxa series.