Bukhtiyarova Lyudmila N
Institute for Evolutionary Ecology, National Academy of Sciences of Ukraine, Acad. Lebedev str. 37, 03143 Kyiv, Ukraine Institute for Evolutionary Ecology, National Academy of Sciences of Ukraine Kyiv Ukraine.
PhytoKeys. 2019 Jul 23;128:1-31. doi: 10.3897/phytokeys.128.35566. eCollection 2019.
Numerous species of Ehrenb., widely distributed in the world flora, prefer acidic, dystrophic or oligotrophic freshwater habitats with low conductivity and usually occur in epiphytic or epilithic hydrotopes. In Ukraine, only 32 species and eight varieties of were known until this study. For the first time, 9 more species have been recorded mainly from the Cheremsky Nature Reserve, located in Ukrainian Polissya. New findings include 2 species widely distributed in the world flora on most continents and 7 rare species known from several locations, among them , and , which are probably European endemics as they have not been reported from other continents. For the present time in the Cheremsky Nature Reserve, the 20 species recorded here, the highest species richness of in Ukraine, bring the total number of in Ukraine to 41 species, which comprises only 7% of species in the world flora. This is indirect evidence of insufficient investigation of the wetlands in Ukraine where usually is represented with high species richness. Several definitions are suggested to describe morphological features that are peculiar to the diatom frustule particular to the species. The genus Eunotia possesses a mirror-symmetric, , , which may or may not have . Morphological analysis provided in this study revealed the absence of terminal raphe fissures for many species of . Instead, the distal ends of the raphe slits finish on the outer valve surface by funnel holes, sometimes pore-like ones, connected with the helictoglossae. However, in the literature those distal ends of the raphe slits were described erroneously as terminal raphe fissures. For the first time different types of raphe system are grounded. Two species Nörpel-Schempp et al. in Alles et al. and W. Smith ex Gregory were lectotypified.
埃伦贝格属（Ehrenb.）的众多物种广泛分布于全球植物区系中，偏好酸性、营养不良或贫营养的淡水生境，电导率低，通常出现在附生或石生水生境中。在乌克兰，直到本研究之前，仅知有32个物种和8个变种。首次记录到另外9个物种，主要来自位于乌克兰波列西耶地区的切列姆斯基自然保护区。新发现包括2个在世界植物区系中分布于大多数大陆的广泛分布物种，以及7个仅在几个地点被知晓的稀有物种，其中包括[具体物种名称未给出]，它们可能是欧洲特有种，因为在其他大陆尚未有报道。目前在切列姆斯基自然保护区记录到的20个物种是乌克兰埃伦贝格属物种丰富度最高的，这使得乌克兰埃伦贝格属物种总数达到41种，仅占世界植物区系中该属物种的7%。这间接证明了乌克兰湿地的调查不足，而在这些湿地中埃伦贝格属通常具有较高的物种丰富度。本文提出了几个定义来描述埃伦贝格属物种硅藻壳所特有的形态特征。真鼻藻属（Eunotia）具有镜像对称的[具体特征未给出]，可能有也可能没有[另一具体特征未给出]。本研究中的形态分析表明，许多埃伦贝格属物种没有末端中缝裂缝。相反，中缝狭缝的远端在外瓣膜表面通过漏斗孔结束，有时是孔状的，与螺旋舌相连。然而，在文献中这些中缝狭缝的远端被错误地描述为末端中缝裂缝。首次明确了不同类型的中缝系统。对诺佩尔 - 申普等人在阿勒斯等人著作中记载的两个物种以及格雷戈里记载的W. 史密斯的一个物种选定了新模式标本。
