Taxonomic notes for Portulaca (Portulacaceae) in South America II: synonymisation of P. diegoi under P. hatschbachii based on macro and microcharacters
José Roberto Ferraz, Elson Felipe Sandoli Rossetto, Gustavo Hassemer, José Eduardo Lahoz Da Silva Ribeiro
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引用次数: 0
Abstract
Portulaca diegoi is here proposed as a heterotypic synonym (synon. nov.) of P. hatschbachii, a species endemic to southern Brazil. Analysis of type specimens and protologues of both names demonstrated that they do not differ in root, leaf, flower, fruit or seed morphology. P. hatschbachii can be distinguished from other Portulaca species by its decumbent habit, oblanceolate leaves with purplish and recurved apex, lanate leaf axillary trichomes, hemispheric operculum and thick and elongated roots. In addition, based on examination of specimens of P. hatschbachii, they are quite distinct, because their leaves turn black after drying. Illustrations and comments about the taxonomy, phenology, distribution, habitat and conservation status are provided for P. hatschbachii.
南美洲马齿苋（马齿苋科）分类说明 II：根据宏观和微观特征将 P. diegoi 同化为 P. hatschbachii
hatschbachii 的异型异名。对这两个名称的模式标本和原型分析表明，它们在根、叶、花、果实或种子形态上没有差异。马齿苋（P. hatschbachii）与其他马齿苋物种的区别在于其外倾的生长习性、倒披针形的叶片，叶片先端略带紫色并下弯、叶腋毛状体呈绵状、厣呈半球形、根粗而长。此外，根据对 P. hatschbachii 标本的检查，它们是非常独特的，因为它们的叶片在干燥后会变黑。本报告提供了有关 P. hatschbachii 的分类、物候学、分布、栖息地和保护状况的插图和评论。
期刊介绍：
Kew Bulletin is an international peer-reviewed journal for the taxonomy, systematics and conservation of vascular plants and fungi. Papers on conservation, evolution, palynology, cytology, anatomy, biogeography and phytochemistry are considered, where relevant to taxonomy and systematics. Review papers on topics appropriate to the journal are invited. The journal is richly illustrated with line drawings and photographs, and also features a Book Review and Notices section. Four parts (c. 640 pp) are published each year.
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