Daniel A. Zhigila, Ute Schmiedel, A. Muthama Muasya
{"title":"Thesium schmiedeliae (Santalaceae), a new species from Knersvlakte quartz fields, South Africa","authors":"Daniel A. Zhigila, Ute Schmiedel, A. Muthama Muasya","doi":"10.1007/s12225-023-10114-y","DOIUrl":null,"url":null,"abstract":"Summary We test the hypothesis that the Thesium (Santalaceae) collection previously known as Thesium sp. D.A.Zhigila & A.M.Muasya 1006 is new to science. We formally describe and name it T. schmiedeliae . The new species is an erect to suberect shrublet, c. 20 cm tall, glaucous in overall appearance, with stems terete in transverse section, and leaves bracts, and bracteoles succulent. Molecular and morphological data support the placement of T. schmiedeliae in subgenus Frisea section Annulata . The new species is endemic to the Knersvlakte Nature Reserve and occurs in the edaphically unique quartz islands. Thesium schmiedeliae is preliminarily assessed for conservation purposes as Vulnerable as it is threatened by drought, severe fragmentation of its quartz-field habitat, small population size, and a small area of occupancy.","PeriodicalId":51321,"journal":{"name":"Kew Bulletin","volume":"1 1","pages":"0"},"PeriodicalIF":0.9000,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kew Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s12225-023-10114-y","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Summary We test the hypothesis that the Thesium (Santalaceae) collection previously known as Thesium sp. D.A.Zhigila & A.M.Muasya 1006 is new to science. We formally describe and name it T. schmiedeliae . The new species is an erect to suberect shrublet, c. 20 cm tall, glaucous in overall appearance, with stems terete in transverse section, and leaves bracts, and bracteoles succulent. Molecular and morphological data support the placement of T. schmiedeliae in subgenus Frisea section Annulata . The new species is endemic to the Knersvlakte Nature Reserve and occurs in the edaphically unique quartz islands. Thesium schmiedeliae is preliminarily assessed for conservation purposes as Vulnerable as it is threatened by drought, severe fragmentation of its quartz-field habitat, small population size, and a small area of occupancy.
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.