Two new species of the genus Lecidella, one with a North American-maritime Antarctic distribution and one with a so far exclusively southern South American-maritime Antarctic distribution, are described using molecular and morphological tools. Lecidella ayazii is a species growing on soil and also on mosses and has so far been found on the Antarctic Peninsula, as well as in the alpine areas of the La Sal Mountains, Utah, USA and in the Kivalliq Region (Nunavut) in the north of Canada, whereas L. drakensis occurs mainly on siliceous rocks, rarely on mosses, and has been recorded on both sides of the Drake Passage in southern Patagonia and the Antarctic Peninsula. Phylogenetic analysis of the nrITS sequence data shows that both species belong in the L. elaeochroma clade, each forming a highly supported and distinct group. Furthermore, they also differ in morphological and chemical characters from the species described so far in this clade. In addition, five further accessions were recorded from the maritime Antarctic, which were placed in the cosmopolitan and heterogeneous L. stigmatea clade, of which one could be assigned to the bipolar species L. siplei.

中文翻译：

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来自南极洲海洋、南美洲南部和北美的 Lecidella 属（Lecanoraceae，子囊菌门）的两个新种

该属两个新种莱西黛拉,使用分子和形态学工具描述了一种分布在北美-南极海域，一种迄今为止仅分布在南美南部-南极海域。绫子Lecidella是一种生长在土壤和苔藓上的物种，目前已在南极半岛、美国犹他州拉萨尔山脉的高山地区和加拿大北部的基瓦利克地区（努勒维特）发现。 ， 然而龙蜥蜴主要出现在硅质岩石上，很少出现在苔藓上，在巴塔哥尼亚南部和南极半岛的德雷克海峡两岸都有记录。nrITS 序列数据的系统发育分析表明，这两个物种都属于斑马鱼分支，每个分支都形成一个高度支持且独特的群体。此外，它们的形态和化学特征也与该进化枝中迄今为止描述的物种不同。此外，还记录了来自南极海域的另外五个种质，这些种质被放置在国际化和异质性的环境中。柱头乳杆菌进化枝，其中一个可以被分配给双极物种西普莱乳杆菌。