Iosanthus (Hyacinthaceae subfam. Urgineoideae), a new genus from Southern Africa to include Ornithogalum toxicarium and its removal from Ornithogaloideae

被引:17
|
作者
Martinez-Azorin, Mario [1 ,2 ]
Crespo, Manuel B. [1 ,2 ]
Pinter, Michael [3 ]
Slade, Julian M.
Wetschnig, Wolfgang [3 ]
机构
[1] Univ Alicante, Dept Ciencias Ambientales & Recursos Nat dCARN, Alicante, Spain
[2] Univ Alicante, CIBIO Inst Univ Biodiversidad, Alicante, Spain
[3] Karl Franzens Univ Graz, Inst Plant Sci, NAWI Graz, Graz, Austria
来源
PLANT BIOSYSTEMS | 2019年 / 153卷 / 04期
基金
欧盟地平线“2020”;
关键词
Asparagaceae; Ornithogalum; Scilloideae; taxonomy; distribution; EASTERN CAPE PROVINCE; TAXONOMIC REVISION; ASPARAGACEAE; SCILLOIDEAE; CLASSIFICATION; PHYLOGENETICS; SCILLA;
D O I
10.1080/11263504.2018.1527793
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In the framework of a taxonomic revision of subfamily Urgineoideae based on morphological and genetic data covering numerous samples from its whole range of distribution, we here describe a new genus from Southern Africa. Iosanthus gen. nov. includes Ornithogalum toxicarium, a highly toxic species originally placed in subfamily Ornithogaloideae. However, our morphological studies support its inclusion in subfamily Urgineoideae based on the small bracts with a slight curve or short spur abaxially, the withered perigone circumscissile below and forming an apical cap and widely winged seeds with loose testa, a treatment also supported by its isolated phylogenetic position within this subfamily that facilitates the description of the new genus. Moreover, we also show that the holotype collection of this species represents a mixed collection of O. toxicarium in flower and an Albuca sp. in fruit, and therefore a lectotype is selected to maintain the current concept of this species.
引用
收藏
页码:580 / 588
页数:9
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