Benna alternifolia (Melastomataceae: Sonerileae), a new herbaceous genus and species from Guinea, West Africa

IF 1.8 3区生物学 Q2 PLANT SCIENCES

Willdenowia Pub Date : 2022-02-16 DOI:10.3372/wi.52.52102

X. M. van der Burgt, Pepe M. Haba, S. Magassouba, Marie Claire Veranso‐Libalah

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引用次数: 5

Abstract

Abstract: Benna is a new monospecific genus in the Melastomataceae, from the Benna Plateau in Forécariah Prefecture in Guinea, West Africa. Molecular sequence data show the genus Benna is nested within the tribe Sonerileae but clearly unrelated to the other African Sonerileae genera. The genus is weakly supported as sister to the South American Sonerileae genus Phainantha. Similarities and differences with African and American Sonerileae genera are listed. The new species Benna alternifolia is a perennial evergreen herb, half-spherical in shape, up to 1.2 m in diameter. A plant may have up to 60 alternate leaves, with petioles up to 45 cm long and blades up to 31 × 28 cm. The flowers are actinomorphic, with 4 sepals and 4 pink petals, 8 dimorphic stamens, and an inferior 4-locular ovary. The fruit is a capsule. The seeds are obovoid or nearly so, with a smooth testa. Benna alternifolia occurs in deep shade in canyons, on vertical or overhanging sandstone rocks out of reach of falling rain drops, and only where water is seeping all year round, including during the 6-month dry season. About 680 plants were found. Benna alternifolia is assessed to the IUCN category Near Threatened. Citation: Burgt X. M. van der, Haba P. M., Magassouba S. & Veranso-Libalah M. C. 2022: Benna alternifolia (Melastomataceae: Sonerileae), a new herbaceous genus and species from Guinea, West Africa. – Willdenowia 52: 25–37. Version of record first published online on 16 February 2022 ahead of inclusion in April 2022 issue.

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互叶Benna alternifolia（马兰科：Sonerileae），西非几内亚的一个新草本属和种

摘要：本纳属（Benna）是马齿苋科中一个新的单分种属，产于西非几内亚富卡里亚州本纳高原。分子序列数据显示，Benna属嵌套在Sonerileae部落内，但显然与其他非洲Sonerilea属无关。该属是南美洲松科Phainantha属的姊妹属。列出了与非洲和美洲的Sonerileae属的相似性和差异性。新种互叶Benna是一种多年生常绿草本植物，形状为半球形，直径可达1.2米。一株植物可能有多达60片互生叶，叶柄长达45厘米，叶片长达31×28厘米。花辐射对称，有4个萼片和4个粉红色花瓣，8个二型雄蕊，和一个下位4室的子房。这种水果是一个胶囊。种子倒卵球形或近似倒卵球形，种皮光滑。互叶Benna发生在峡谷的深阴处，在垂直或悬垂的砂岩上，雨水无法降落，只有在全年都有水渗出的地方，包括在6个月的旱季。发现了大约680株植物。互叶Benna被评定为国际自然保护联盟的近危物种。引文：Burgt X.M.van der，Haba P.M.，Magassouba S.&Veranso Libalah M.C.2022：互叶Benna（马耳科：Sonerileae），一个来自西非几内亚的新草本属和种Willdenowia 52:25-37。该记录的版本于2022年2月16日首次在线发布，随后将于2022年4月出版。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Willdenowia PLANT SCIENCES-

CiteScore

4.60

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： Willdenowia is an international peer-reviewed journal publishing original research articles in English from the entire fields of plant, algal and fungal systematics, covering the evolution, taxonomy and nomenclature of these organisms as well as related fields such as floristics and plant geography. Articles on phylogeny and molecular systematics are especially welcome, as are review articles. Descriptions of new taxa may be considered, but only if supported by robust evidence. Narrowly regional studies of widespread taxa, routine typifications, checklists and new floristic records are generally not considered (excluding contributions to the Euro+Med-Checklist Notulae). Authors are encouraged to deposit duplicates of their material, especially nomenclatural types, in the Berlin herbarium (B).