Thales Silva Coutinho, Rafael G Barbosa-Silva, Laurence J Dorr
{"title":"A synopsis of <i>Christiana</i> DC. (Malvaceae, Brownlowioideae), with a new species from the Brazilian Atlantic Forest.","authors":"Thales Silva Coutinho, Rafael G Barbosa-Silva, Laurence J Dorr","doi":"10.3897/phytokeys.253.145350","DOIUrl":null,"url":null,"abstract":"<p><p>A taxonomic synopsis is provided for the genus <i>Christiana</i>, with emphasis on the American species. Full synonymies, typifications, comments about distribution, and notes on main diagnostic characteristics, as well as conservation status and phenology, are provided. We describe a new species, <i>C.restingae</i> T.S. Cout., Barb.Silva & Dorr, <b>sp. nov</b>. With this addition, <i>Christiana</i> now comprises six species, with its center of richness in South America, where five species occur. The new species is endemic to Brazil where it is known only from Atlantic Forest and Restinga in the states of Espírito Santo and Rio de Janeiro, and is preliminarily assessed as Critically Endangered. Illustrations, images, a distribution map, SEM images of vegetative and reproductive structures, taxonomic comments, and information about the ecology and conservation of <i>C.restingae</i> are provided. Furthermore, the distribution and introduction of <i>C.africana</i> in the Americas is discussed. A total of eight names of <i>Christiana</i> species or synonyms described in four other genera (<i>Berrya</i>, <i>Carpodiptera</i>, <i>Entelea</i>, and <i>Speirostyla</i>) are lectotypified.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"33-56"},"PeriodicalIF":1.3000,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11889513/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PhytoKeys","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3897/phytokeys.253.145350","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
A taxonomic synopsis is provided for the genus Christiana, with emphasis on the American species. Full synonymies, typifications, comments about distribution, and notes on main diagnostic characteristics, as well as conservation status and phenology, are provided. We describe a new species, C.restingae T.S. Cout., Barb.Silva & Dorr, sp. nov. With this addition, Christiana now comprises six species, with its center of richness in South America, where five species occur. The new species is endemic to Brazil where it is known only from Atlantic Forest and Restinga in the states of Espírito Santo and Rio de Janeiro, and is preliminarily assessed as Critically Endangered. Illustrations, images, a distribution map, SEM images of vegetative and reproductive structures, taxonomic comments, and information about the ecology and conservation of C.restingae are provided. Furthermore, the distribution and introduction of C.africana in the Americas is discussed. A total of eight names of Christiana species or synonyms described in four other genera (Berrya, Carpodiptera, Entelea, and Speirostyla) are lectotypified.
提供了一个分类概要的属Christiana，重点在美洲种。提供了完整的同义词、类型学、分布评论、主要诊断特征、保护状况和物候学注释。我们描述了一个新的物种，c.s restingae T.S. Cout。倒钩。加上这个新物种，克里斯蒂安娜现在有6个物种，其丰富的中心在南美洲，那里有5个物种。这种新物种是巴西特有的，只在Espírito圣州和巴西里约热内卢州的大西洋森林和雷斯廷加发现，初步被评估为极度濒危物种。提供了restingae的插图、图片、分布图、营养和生殖结构的SEM图像、分类评论以及生态和保护信息。此外，还讨论了非洲古树在美洲的分布和引种情况。在其他4个属（浆果亚、Carpodiptera、Entelea和spirostyla）中描述的Christiana种或同义词共有8个名称被lectotypified。
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