Chryselium, a New South American Genus Segregated from Helichrysum (Asteraceae, Gnaphalieae)

被引：2
作者：
Freire, Susana E. [1 ]
Urtubey, Estrella [1 ]
机构：
[1] Consejo Nacl Invest Cient & Tecn, Inst Bot Darwin, Labarden 200,CC 22,B1642 HYD, San Isidro, Argentina
来源：
SYSTEMATIC BOTANY | 2019年 / 44卷 / 01期
关键词：
Antennaria; Compositae; ETS; Gnaphalium; ITS; Leontopodium; Pseudognaphalium; Tropical Andes; PHYLOGENETIC-RELATIONSHIPS; NUCLEAR; SEQUENCES; EVOLUTION; SPACER; TREES;
D O I：
10.1600/036364419X698056
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Chryselium Urtubey & S. E. Freire, a new monotypic genus, is here described and illustrated to accomodate one species that was initially placed in Helichrysum, H. gnaphalioides, as Chryselium gnaphalioides. The new genus, Chryselium, is a monoecious herb with single stems and terminal capitulescences that are densely glomerulate from the Tropical Andes of Venezuela, Colombia, Ecuador, Bolivia, and Peru. This genus differs fundamentally from Helichrysum by having a stoloniferous habit and corollas with purple apices. A molecular analysis using DNA sequences from nuclear (ITS and ETS) markers placed this genus in a Glade with Chevreulia, Cuatrecasasiella, Antennaria, and Diaperia in the FLAG group. Affinities of the new genus with genera previously assigned to Chryselium are also discussed.
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页码：233 / 242
页数：10
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