Lee Gaik Ee, Bechteler Julia, Pócs Tamás, Schäfer-Verwimp Alfons, Tang Hung Yung, Chia Poh Wai
Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus 21030, Malaysia.
Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, Kuala Nerus 21030, Malaysia.
Plants (Basel). 2022 Jun 21;11(13):1642. doi: 10.3390/plants11131642.
Prior to the advent of molecular work, the observable variation in vegetative reproduction has been used to classify into subgenera and sections. Thereby, the ability of developing caducous leaves was regarded as major factor. A reexamination of several specimens revealed that with caducous leaves shows considerable morphological differences with non-caducous leaved plants of . Phylogenetic analyses based on a three-marker dataset (L, LF and the nuclear ribosomal ITS region) indicated two independent and robust lineages of the morpho-species . We consider both clades as two distinct species and therefore describe the new species, for morpho-species with caducous leaves. is characterized by its caducous leaves with ribbon-like and plantlet regenerants, strongly reduced leaf lobules, distant and deeply bilobed underleaves, long-keeled obovoid perianth, and autoicy and ranges from tropical Asia to the Pacific region.
在分子研究出现之前，营养繁殖中可观察到的变异已被用于将其分类为亚属和组。因此，发育出早落叶片的能力被视为主要因素。对多个标本的重新检查发现，有早落叶片的植株与无早落叶片的植株在形态上存在相当大的差异。基于三个标记数据集（L、LF和核糖体ITS区域）的系统发育分析表明，形态种有两个独立且可靠的谱系。我们将这两个分支视为两个不同的物种，因此为有早落叶片的形态种描述了新物种。其特征是具有带状和小植株再生体的早落叶片、强烈退化的小叶、相距较远且深裂的下位叶、具长龙骨的倒卵形花被，以及雌雄同株，分布范围从热带亚洲到太平洋地区。
