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首页> 外文期刊>Mycologia >A radical shift in the taxonomy of Lepraria s.l.: molecular and morphological studies shed new light on the evolution of asexuality and lichen growth form diversification.
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A radical shift in the taxonomy of Lepraria s.l.: molecular and morphological studies shed new light on the evolution of asexuality and lichen growth form diversification.

机译：Lepraria s.l.分类学的根本性转变：分子和形态学研究为无性进化和地衣生长形式多样化提供了新的思路。

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A combination of molecular phylogenetic analyses of ITS and mtSSU sequences, morphological and chemical analyses were used to investigate the lineages nominally included in the sterile lichen genus Lepraria. A core group (Lepraria s. str.) was resolved as sister to Stereocaulon. Species producing the secondary compounds argopsin, pannarin and usnic acid were found to belong to other lineages of lichen-forming ascomycetes. Study of Leprocaulon revealed that all species, except the type, likely represent members of Lepraria s. str. that have evolved a fruticose growth form. The correct name for the type species of Leprocaulon is shown to be L. quisquiliare, not L. microscopicum, and the genus is redefined to include several species previously placed in Lepraria. Leprocaulon quisquiliare is also shown to comprise two morphologically convergent species. The name is lectotypified and epitypified on material from the type region (Germany) and its application restricted to Old World populations. New World populations of L. quisquiliare are described as L. americanum. Leprocaulon, in its revised sense, is recognized in a new family (Leprocaulaceae) and order (Leprocaulales) sister to the Caliciales and including the genus Halecania. A new genus of Pilocarpaceae, Nelsenium, is introduced to accommodate Lepraria usnica. The status of Lepraria ecorticata is discussed in the context of usnic acid-producing Lecanora species. These nomenclatural novelties are proposed: (i) transfers from Leprocaulon to Lepraria: Lepraria albicans comb. nov., L. arbuscula comb. nov., L. congestum comb. nov., L. gracilescens comb. nov., L. pseudoarbuscula comb. nov., L. subalbicans comb. nov., L. tenellum comb. nov.; (ii) transfers from Lepraria to Leprocaulon: Leprocaulon adhaerens comb. nov., L. coriense, L. santamonicae comb. nov., L. terricola comb. nov. and L. textum comb. nov.; (iii) new taxa: Leprocaulales ord. nov., Leprocaulaceae fam. nov., Nelsenium gen. nov., Leprocaulon americanum sp. nov. and L. knudsenii sp. nov.
机译：结合ITS和mtSSU序列的分子系统发育分析，形态学和化学分析，研究了名义上包括在无菌地衣属Lepraria中的谱系。一个核心小组（Lepraria s。str。）被确定为Stereocaulon的姐妹。发现产生次要化合物精蛋白，潘那林和松萝酸的物种属于地衣形成子囊菌的其他谱系。对Leprocaulon的研究表明，除种类外，所有物种都可能代表Lepraria s的成员。海峡已经形成了果糖的生长形式。 Leprocaulon类型物种的正确名称显示为quisquiliare，而不是L. microscopicum，并且该属被重新定义为包括以前放置在Lepraria中的几种物种。 Leprocaulon quisquiliare也显示包含两个形态上会聚的物种。该名称是根据类型区域（德国）中的材料进行电化和表生化的，其名称仅限于旧世界人口。新世界的L. quisquiliare种群被称为L. americanum。修改后的意义上的Leprocaulon在Calicales的一个新家族（Leprocaulaceae）和Order（Leprocaulales）姐妹中得到了认可，其中包括Halecania属。引入了一种新的木果科，即Nelsenium，以容纳Lepraria usnica。在产us酸的Lecanora物种的背景下讨论了Lepraria ecorticata的状况。提出了这些命名上的新颖性：（i）从Leprocaulon到Lepraria的转移：白色Lepraria白色梳子。十一月，L。arbuscula梳子。十一月，L。充血梳。十一月，L。gracilescens梳。十一月，L。pseudoarbuscula梳。十一月，L。subalbicans梳子。十一月，L。tenellum梳。十一月（ii）从Lepraria转移到Leprocaulon：Leprocaulon adhaerens梳子。十一月，L。coriense，L。santamonicae梳子。十一月，L。terricola梳子。十一月和L.textum梳子。十一月（iii）新的类群：Leprocaulales ord。十一月，Leprocaulaceae fam。十一月，Nelsenium gen。十一月，美洲Leprocaulon sp。十一月和L. knudsenii sp。十一月

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