ABSTRACT

Introduction

During field studies in Argentina, we collected a specimen of Aloina Kindb. that did not match any of the known species of the genus. Here we present our arguments for recognising this moss as a new species.

Methods

The morphology of the new taxon was compared with that of the species of Aloina presently recognised. In addition, most of the type material of the taxa attributed to this genus in the world has been studied.

Key results and conclusions

Aloina scindulosa M.J.Cano, J.A.Jiménez & M.T.Gallego is described and illustrated as a new moss species from four localities in the Monte Desert area of Argentina. It is distinct from all other members of the genus in the combination of its lingulate leaves with unbordered margins, rectangular and slightly sheathing leaf bases, leaves ending in a long, hyaline, papillose hair-point near the leaf apex, the costa scarcely differentiated, in cross-section with no stereids, and the upper and middle laminal cells and costal surface dorsally prorate in the upper midleaf. Possible confusion with other species of the genus is discussed. A key to the South American species of Aloina is provided.

中文翻译：

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Aloina scindulosa MJCano、JAJiménez 和 MTGallego（Pottiaceae），来自阿根廷的苔藓新种

摘要

介绍

在阿根廷进行实地研究期间，我们收集了Aloina Kindb的标本。与该属的任何已知物种都不匹配。在这里，我们提出了将这种苔藓视为新物种的论据。

方法

将新分类单元的形态与目前识别的Aloina物种的形态进行了比较。此外，世界上大部分属于该属的类群模式材料都已被研究。

主要结果和结论

Aloina scindulosa MJCano、JAJiménez 和 MTGallego 被描述和说明为来自阿根廷蒙特沙漠地区四个地点的新苔藓物种。它与该属的所有其他成员的不同之处在于其舌状叶具有无边框边缘，矩形且稍带鞘的叶基部，叶子在叶尖附近以长的透明的乳突状毛点结尾，肋几乎没有分化，横截面无甾体，上部中叶的上部和中部层状细胞和肋表面背侧按比例倾斜。讨论了与该属其他物种可能发生的混淆。提供了南美洲Aloina物种的钥匙。