A New Species of Evolvulus (Convolvulaceae) with Golden Hairs from the Brazilian Cerrado

IF 0.9 3区 生物学 Q4 EVOLUTIONARY BIOLOGY Systematic Botany Pub Date : 2023-03-28 DOI:10.1600/036364423X16758873924153
Diego Santos, C. Amorim, M. T. Buril
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Abstract

Abstract A new species of Evolvulus from the Brazilian Cerrado, a savanna biodiversity hotspot, is described here. Evolvulus aureus sp. nov. is similar to E. passerinoides, both found in Cerrado, and share erect stems (also decumbent in E. passerinoides), branched at the base, leaves spiral, flat, with acute apex and leaf base rounded, and axillary flowers. They can be distinguished by the indument type and by its color when herborized, shape of the leaf blade, visibility of secondary veins, sepal length, and anther shape. This new species is circumscribed into E. sect. Passerinoidei based on erect stem, axillary and solitary flowers, and funnelform corolla. A diagnosis, morphological description, illustrations, taxonomic notes, informal conservation status, distribution map, and an identification key are provided. Resumo É descrita uma nova espécie de Evolvulus ocorrente no Cerrado brasileiro, uma savana considerada hotspot de biodiversidade. Evolvulus aureus sp. nov. é similar a E. passerinoides, ambos ocorrem no Cerrado brasileiro e compartilham caule ereto (também decumbente em E. passerinoides), ramificado na base, folhas espiraladas, lâmina foliar plana com ápice agudo, base foliar redonda e flores axilares. Estas espécies são distinguidas pelo tipo de indumento e sua cor quando herborizadas, forma da lâmina foliar, visibilidade das nervuras secundarias, comprimento das sépalas e forma das anteras. Esta nova espécie é posicionada em E. sect. Passerinoidei baseada no caule ereto, flores axilares e solitárias, e corola infundibuliforme. Uma diagnose, descrições morfológicas, ilustrações, notas taxonômicas, estado de conservação informal, mapa de distribuição e uma chave taxonômica são apresentados.
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巴西塞拉多金毛旋花属一新种(旋花科)
摘要本文描述了巴西热带草原生物多样性热点塞拉多的一个新物种Evolvulus。金黄色Evolvulus aureus sp.nov.与路人甲相似,都发现于塞拉多,共有直立的茎(在路人甲中也有外倾的茎),在基部分枝,叶螺旋状,扁平,锐尖和叶基部圆形,花腋生。它们可以通过诱导类型和上草时的颜色、叶片形状、次脉的可见性、萼片长度和花药形状来区分。这个新物种被归入E。雀形目基于直立的茎,腋生和单生的花,和漏斗状的花冠。提供了诊断、形态描述、插图、分类注释、非正式保护状态、分布图和鉴定钥匙。描述了一种新的Evolvulus物种,该物种发生在巴西塞拉多草原,该草原被认为是生物多样性的热点。金黄色Evolvulus aureus sp.nov.与路人甲相似,均产于巴西塞拉多,共有一个直立的茎(在路人甲中也为外倾),在基部分枝,螺旋形叶,平叶片,先端锐尖,叶基圆,花腋生。通过诱导类型和除草时的颜色、叶片形状、次生棱的可见性、萼片长度和花药形状来区分这些物种。该新种位于E。Passerinoidei基于直立的茎,腋生和单生的花,和漏斗状的花冠。介绍了诊断、形态描述、插图、分类注释、非正式保护状态、分布图和分类钥匙。
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来源期刊
Systematic Botany
Systematic Botany 生物-进化生物学
CiteScore
1.80
自引率
10.00%
发文量
72
审稿时长
6-12 weeks
期刊介绍: Systematic Botany Monographs is a series of peer-reviewed taxonomic monographs and revisions published the American Society of Plant Taxonomists. ISSN 0737-8211, ISBN prefix 978-0-912861. No; volumes of Systematic Botany Monographs must be ordered separately. ASPT membership inludes only a subscription to the quarterly journal Systematic Botany. SBM is supported by sales, author"s subsidies, and donations.
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