ABSTRACT

Introduction

A recently published study revealed an unnoticed New Zealand endemic and monotypic genus, which was named Rehubryum. It was based on Ulota bellii, a species described by Nikolajs Malta for which only two previous collections were known. Despite this sample size limitation, Malta simultaneously published two varieties, each based on one of the two specimens: the type variety and U. bellii var. longicolla.

Methods

Specimens from 80 localities between 0 and 1430 m a.s.l. from both the North and South Islands of New Zealand were studied. Type material of both varieties of Ulota bellii was included in the study, and the ecological affinities of Rehubryum bellii were analysed.

Key results and conclusions

Morphometric analysis supports the conclusion that our recent collections correspond to the original concept of Ulota bellii, now combined as Rehubryum bellii. Additionally, var. longicolla is synonymised with the type variety based on a lack of morphological differences. Rehubryum bellii is described in detail and illustrated, and its distribution and ecological affinities are discussed. Rehubryum bellii presents a set of morphological diagnostic characters: leaves with a submarginal band of elongate cells, papillose-denticulate margins in the base–lamina transition, and an endostome with 16 segments. Similarities and differences between Rehubryum and Atlantichella, the sister genus from the northern hemisphere, as well as the distinction from Australasian species of Orthotrichaceae, are discussed. The genus is now known from 12 localities in montane areas of the South Island of New Zealand and two isolated mountains on the North Island.

中文翻译：

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新西兰特有珍稀Rehubryum bellii（马耳他）F.Lara、Garilleti & Draper（直丝菌科、苔藓植物）的分化和分布

摘要

介绍

最近发表的一项研究揭示了一种未被注意到的新西兰特有和单型属，其被命名为Rehubryum。它以Ulota bellii为基础，Nikolajs Malta 描述了该物种，此前仅知道两个物种。尽管样本量有限，马耳他还是同时发布了两个品种，每个品种都基于两个标本之一：模式品种和U.bellii var。长吉科拉。

方法

研究人员对来自新西兰北岛和南岛 80 个海拔 0 至 1430 米之间的地点的标本进行了研究。本研究纳入了两个红花品种的模式材料，并对红花的生态亲缘关系进行了分析。

主要结果和结论

形态测量分析支持这样的结论：我们最近的收藏符合Ulota bellii的原始概念，现在合并为Rehubryum bellii。另外，变种。由于缺乏形态差异，longicolla与类型品种同义。对Rehubryumbellii进行了详细的描述和说明，并讨论了它的分布和生态亲缘关系。Rehubryum bellii呈现出一系列形态学诊断特征：叶子具有细长细胞的下边缘带、基部-叶片过渡处的乳头状小齿边缘以及具有 16 个节段的内生体。Rehubryum和Atlantichella之间的异同讨论了来自北半球的姊妹属，以及与澳大利亚正丝菌科物种的区别。目前，该属分布在新西兰南岛山区的 12 个地区和北岛的两座偏远山区。