A New Caribbean Species of Helosis (Balanophoraceae) with a Revised Key to the Genus

被引：5

作者：

Telles Cardoso, Leandro Jorge ^{[1
]}

Alvarenga Braga, Joao Marcelo ^{[1
]}

机构：

[1] Inst Pesquisas Jardim Bot Rio de Janeiro, BR-22460030 Rio De Janeiro, Brazil

来源：

SYSTEMATIC BOTANY | 2015年 / 40卷 / 02期

关键词：

Antilles; endemism; parasitic plants; root holoparasite; taxonomy; West Indies; CONSERVATION; MORPHOLOGY; HOTSPOTS;

D O I：

10.1600/036364415X688321

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A new species, Helosis antillensis (Scybalioideae: Helosieae), is described, illustrated, and annotated. A key of the known species of Helosis is presented. The new species is the third recognized within the genus and the second Helosis species in the Neotropics. It is also the second Balanophoraceae endemic to the islands of the Caribbean Sea. The new species, related to H. cayennensis, is distinguished by runners with remarkable verrucous surface projections, an inflorescence stalk up to 4.5 cm long, volva that are medially to apically inserted, peltate bracts with distinctly apiculate apices, staminate flowers with free filaments, and pistillate flowers with bifid and deltoid perianth segments (0.3-0.4 mm long).

引用

页码：597 / 603

页数：7

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