An Unusual New Species of Bidens (Asteraceae, Coreopsideae) with its Phylogenetic Position and Taxonomic Notes

被引：3
作者：
de Azevedo Bringel, Joao Bernardo, Jr. [1 ]
Barea Pastore, Jose Floriano [2 ]
Cavalcanti, Taciana Barbosa [3 ]
机构：
[1] Univ Brasilia, Dept Bot, Programa Posgrad Bot, CP 4457,Campus Univ Darcy Ribeiro, BR-70919970 Brasilia, DF, Brazil
[2] Univ Fed Santa Catarina, Rod Ulysses Gaboardi,Km 3,CP 101, BR-70770917 Curitibanos, SC, Brazil
[3] Embrapa Recursos Genet & Biotecnol, Parque Estacao Ecol,Final W5 Norte,CP 03372, BR-7770900 Brasilia, DF, Brazil
来源：
SYSTEMATIC BOTANY | 2017年 / 42卷 / 02期
关键词：
Brazil; Cerrado; Compositae; endemic species; typification; CHROMOSOME-NUMBERS; MOLECULAR PHYLOGENY; ALLOZYME VARIATION; GENUS COREOCARPUS; DNA BARCODES; COMPOSITAE; SEQUENCES; NUCLEAR; HAWAIIAN; INSIGHTS;
D O I：
10.1600/036364417X695448
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
An unusual new species of Bidens (Asteraceae) from Brazil is described and its placement within the genus is elucidated by phylogenetic analysis of ITS sequences. The new species, described as Bidens campanulata, is distinct in the genus based on its broadly campanulate corolla limb with long lobes, an extremely reduced involucre (shorter than the flower length), and the absence of awns on the pappus. This study presents a taxonomic treatment of the species of Bidens with discoid capitula endemic to the Brazilian Cerrado, including a key to the species, typification, and information on conservation status.
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页码：301 / 312
页数：12
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