Bakalin Vadim A, Vilnet Anna A, Mamontov Yuriy S, Schäfer-Verwimp Alfons, Maltseva Yulia D, Klimova Ksenia G, Nguyen Van Sinh, Choi Seung Se
Laboratory of Cryptogamic Biota, Botanical Garden-Institute FEB RAS, Makovskogo Street 142, Vladivostok 690024, Russia.
Laboratory of Flora and Vegetation, Polar-Alpine Botanical Garden-Institute of the Russian Academy of Sciences, Akademgorodok, 18A, Apatity 184209, Russia.
Plants (Basel). 2022 Jun 17;11(12):1596. doi: 10.3390/plants11121596.
sect. is not speciose and is a commonly neglected section within the genus, which currently includes three species with somewhat similar morphologies (wiry shoots with distanced leaves) and distributions in the mountains of tropical and subtropical regions (SE (Southeast) Asia, the Venezuelan Andes, and the high mountains of SE Brazil). After studying materials that were found to be dissimilar to the "traditional" that were collected in the last decade by the authors of this article, it was found that these plants belong to three new-for-science species, and all of these species should be included in sect. . The newly described species have expanded the boundaries of morphological variability, not only for the section itself, but also for the genus based on two findings: (1) the leaves of sect. can be either appressed and entire or spaced and deeply divided (thus, the plants could occasionally be similar to or ); (2) some species of the section possess regular underleaf production. The first discovery of regular underleaves in , as noted in two of the three newly described taxa, is the main morphological novelty described in this paper. The development of regular underleaves is a presumable relict character that brings closer to , which was recently transferred to the Gymnomitriaceae and occupies an isolated position within its own subfamily, Nardioideae.
该组种类不多，是该属中一个常被忽视的组，目前包括三个形态 somewhat 相似（具疏离叶的细弱枝条）且分布于热带和亚热带地区山区（东南亚、委内瑞拉安第斯山脉以及巴西东南部的高山）的物种。在研究了本文作者在过去十年收集到的与“传统”物种不同的材料后，发现这些植物属于三个科学新物种，且所有这些物种都应归入该组。新描述的物种不仅扩大了该组本身形态变异性的范围，也基于两项发现扩大了该属的形态变异性范围：（1）该组的叶可以是紧贴且全缘的，也可以是疏离且深裂的（因此，这些植物偶尔可能与其他属相似）；（2）该组的一些物种有规则地产生叶下叶。正如三个新描述的分类群中的两个所指出的，该属中首次发现有规则的叶下叶是本文描述的主要形态新奇之处。规则叶下叶的发育是一个推测的残遗特征，使该属更接近另一个属，后者最近被归入裸蒴藓科，在其自己的亚科纳地藓亚科中占据一个孤立的位置。
