Document of bibliographic reference 332803

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Four new species of monoraphid diatoms from Western Sichuan Plateau in China

Abstract

Four new monoraphid diatoms are examined and described from a high-altitude (> 3000 m) region of western Sichuan, China.  The descriptions are based on light and scanning electron microscopy observations, and the four new species are compared with similar taxa worldwide.  Achnanthidium sichuanense sp. nov. has small, lanceolate-elliptical valves, with rounded apices. The outline and central area differentiate it from similar species.  The unique characteristic of Eucocconeis undulatum sp. nov. is that it has valves that are undulate along the apical axis, forming an “H”-shaped area on both raphe and rapheless valves as seen in light microscope (LM).  Platessa mugecuonesis sp. nov. and Platessa lanceolata sp. nov. are two small species, whose valve outlines and central areas make them different from other species in this genus.  A. sichuanense sp. nov. and E. undulatum sp. nov. are discussed in terms of the relationship between “Achnanthidium & Psammothidium” and “Eucocconeis & Psammothidium”, as these genera are difficult to separate according to morphological characteristics.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000613638600003

Bibliographic citation

You, Q.M.; Zhao, K.; Wang, Y.L.; Yu, P.; Kociolek, J.P.; Pang, W.T.; Wang, Q.X. (2021). Four new species of monoraphid diatoms from Western Sichuan Plateau in China. Phytotaxa 479(3): 257-274. https://dx.doi.org/10.11646/phytotaxa.479.3.3

Topic

Terrestrial

Is peer reviewed

true