Maschalostachys , a new genus of Vernonieae (Asteraceae) from Brazil

Maschalostachys , a new genus of Vernonieae (Asteraceae) from Brazil
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Maschalostachys ,来自巴西的斑鸠菊科(菊科)的一个新属

DOI:
10.11646/phytotaxa.295.1.3
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发表时间:
2017
期刊:
影响因子:
1.1
通讯作者:
N. Roque
N. Roque
中科院分区:
生物学4区
文献类型:
--
作者:
B. Loeuille;N. Roque

文献摘要

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本文描述了产于巴西的菊科一新属Maschalostachys,并将其与先前归入剪秋罗属(L. markgrafii),并将一新种M.甲基硅橡胶。Maschalostachys属的几个特征的组合,包括单轴trespiral,半抱茎叶鞘,由T形和不分枝的毛状体组成的包被,头状花序融合在合头花序中,并组织成腋生的松散的穗状花序或经常在穗状花序的圆锥花序(很少聚伞花序)中,在斑鸠菊族的任何其他属中都没有发现。讨论了该新属与剪秋罗亚科其他属的亲缘关系。每个物种的描述和说明,并评估其保护状况。
Maschalostachys , a new genus of Asteraceae (Vernonieae, Lychnophorinae) from Brazil, is described and illustrated to accommodate two species, Maschalostachys markgrafii , which was previously placed in Lychnophora ( L. markgrafii ), and a new species here described as M. mellosilvae . The combination of several diagnostic characters pertaining to Maschalostachys , including monopodial treelets, semi-amplexicaul leaf sheath, indument composed of T-shaped and unbranched trichomes, capitula fused in a syncephalium and organized in axillary loose spikes or frequently in panicle of spikes (rarely cyme), is not found in any other genus of the tribe Vernonieae. Affinities of the new genus with other genera of Lychnophorinae are discussed. Each species is described and illustrated, and its conservation status is assessed.