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首页> 外文期刊>Diatom Research >TAXONOMY AND ULTRASTRUCTURE OF TWO NEW NEIDIUM SPECIES FROM LAKES IN THE SIERRA NEVADA MOUNTAINS OF NORTHERN CALIFORNIA (USA)
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TAXONOMY AND ULTRASTRUCTURE OF TWO NEW NEIDIUM SPECIES FROM LAKES IN THE SIERRA NEVADA MOUNTAINS OF NORTHERN CALIFORNIA (USA)

机译：来自北加州塞拉尼达山脉两种新新德里姆（USA）（美国）山脉山区的分类和超微结构

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摘要

Neidium Pfitzer is a common genus in the freshwater diatom flora of the United States. Most Neidium taxa are large diatoms with robust features. However, several smaller. more finely organized species are also present. These species arc often overlooked in collections due to their size and finer structure. Upon reviewing collections from several lakes and rivers in Northern California, some new and interesting, forms were discovered. In this work observations oil two Neidium species are provided that appear to be new to science. The first species is zmoderately sized, has an undulate margin and a broad, rectangular central area. The second is small, linear ill Shape, and has very fine striae. Light and scanning electron microscope observations on these two species are presented oil both Cave and girdle components. and they are compared to other small, finely ornamented taxa. These observations suggest there are still many new species of freshwater diatom to discover and describe in the U.S. flora.
机译：Neidium Pfitzer是美国淡水硅藻土的常见属。大多数新尼仙群是具有稳健特征的大硅藻。但是，几个较小的。还存在更精细组织的物种。由于其尺寸和更精细的结构，这些物种通常俯视收集。在审查来自加利福尼亚州北部的几个湖泊和河流的收藏后，发现了一些新的和有趣的形式。在这项工作中，可以提供两种新域种类，似乎是科学新的。第一个物种是ZModerative尺寸的，具有波动的边缘和宽阔的矩形中心区域。第二个是小，线性的形状，并且具有非常好的纹状体。在这两个物种上的光和扫描电子显微镜观察介绍了洞穴和腰带部件。它们与其他小型，精致的分类征的分类。这些观察结果表明，在美国植物群中发现和描述了许多新的淡水硅藻。

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