We deploy Shannon analysis of five ancestrally (ANCE) diagnostic microsatellite loci to explore the patterns of ‘deep’ allelic genetic diversity within the peat moss Sphagnum ×australe Mitt. s.l. cryptic species complex across its Australasian distribution. There is both notable divergence among and considerable allelic overlap within the three allopolyploid lineages of this complex, two gametophytically allodiploid (R1S1 and R2S2) and one gametophytically allotriploid (FR1*S1*). Detailed biogeographic patterns reflect historical differences in genetic isolation and interbreeding. Lineage I (R1S1) occurs in both Australia and New Zealand, while Lineage II (R2S2) and Lineage III (FR1*S1*) are endemic to New Zealand, where Lineage III predominates. Available data suggest that Lineage I arose in Australia, whereas both Lineage II and Lineage III originated in New Zealand. ‘Deep’ allelic diversity provides a pronounced signal of evolutionary radiation within and among the three lineages. We develop a methodology to explore allelic diversity across ploidy levels and elaborate another for scaling additive allele-metric diversity values [0,1], relative to attainable minimal and maximal values, given the sampling frame. We suggest the following taxonomic disposition: gametophytically allodiploid Lineages I and II → S. ×australe; gametophytically allotriploid Lineage III → S. ×antarcticum. Epitypes are designated for both species.

中文翻译：

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泥炭藓隐性物种复合体中配子体倍性水平内和之间的遗传多样性

我们对五个祖先 (ANCE) 诊断微卫星位点进行香农分析，以探索泥炭苔藓 Sphagnum ×australe Mitt 内“深层”等位基因遗传多样性的模式。sl 神秘物种复合体在其澳大利亚分布。该复合体的三个异源多倍体谱系之间存在显着差异和相当大的等位基因重叠，两个配子体异源二倍体（R1S1 和 R2S2）和一个配子体异源三倍体（FR1*S1*）。详细的生物地理模式反映了遗传隔离和杂交的历史差异。谱系 I (R1S1) 发生在澳大利亚和新西兰，而谱系 II (R2S2) 和谱系 III (FR1*S1*) 是新西兰特有的，其中谱系 III 占主导地位。现有数据表明，Lineage I 起源于澳大利亚，而 Lineage II 和 Lineage III 都起源于新西兰。“深”等位基因多样性提供了三个谱系内部和之间进化辐射的明显信号。我们开发了一种方法来探索跨倍性水平的等位基因多样性，并阐述了另一种方法来缩放附加等位基因度量多样性值 [0,1]，相对于可达到的最小值和最大值，给定采样框架。我们建议以下分类配置：配子体异源二倍体谱系 I 和 II → S. ×australe；配子体异源三倍体谱系 III → S. ×antarcticum。两种物种都指定了表型。我们开发了一种方法来探索跨倍性水平的等位基因多样性，并阐述了另一种方法来缩放附加等位基因度量多样性值 [0,1]，相对于可达到的最小值和最大值，给定采样框架。我们建议以下分类配置：配子体异源二倍体谱系 I 和 II → S. ×australe；配子体异源三倍体谱系 III → S. ×antarcticum。两种物种都指定了表型。我们开发了一种方法来探索跨倍性水平的等位基因多样性，并阐述了另一种方法来缩放附加等位基因度量多样性值 [0,1]，相对于可达到的最小值和最大值，给定采样框架。我们建议以下分类配置：配子体异源二倍体谱系 I 和 II → S. ×australe；配子体异源三倍体谱系 III → S. ×antarcticum。两种物种都指定了表型。