 |
| Rorippa daguanensis in Zhang, Xiang, Han, Shao et Zhao, 2025. |
Abstract
Rorippa daguanensis W.Zhang & K.Zhao (Brassicaceae), a new species from Anhui and Hubei Provinces of eastern China, is described. Its floral morphology resembles R. dubia, with its fruit morphology similar to R. cantoniensis. However, it can be readily distinguished from R. dubia by its inconspicuous stems, oval silicle and from R. cantoniensis by the absence of petals and bracts on its flowers. The complete plastid genome of this new species is 155,594 bp in length. Phylogenetic analyses, based on whole plastid genome sequences of Rorippa species, revealed that R. daguanensis is sister to R. cantoniensis.
Key words: Morphology, new species, phylogenomics, Rorippa, taxonomy
 |
| Morphological characters of Rorippa daguanensis sp. nov. A plant in flowering B plant in fruiting C apetalous flower D inflorescence E infructescence F transection of fruits G seed H habitat I leaf morphology. |
 |
| Holotype of Rorippa daguanensis sp. nov. (ANUB100099). |
Rorippa daguanensis W.Zhang & K.Zhao, sp. nov.
Diagnosis. Rorippa daguanensis is similar to R. dubia and R. cantoniensis, but it can be readily distinguished from R. dubia by inconspicuous stems (vs. conspicuous stems), oval silicle 5.5–6.5 mm × 2.5–3.5 mm (vs. linear silique 2.5–4 cm × 0.7–0.9 mm) and can be differentiated from R. cantoniensis by the absence of petals and bracts on the flowers (vs. flowers with petals and bracts) and wrinkled pericarps (vs. smooth pericarps).
Etymology. The specific epithet ‘daguanensis’ refers to the type specimen collection locality, Daguan District, Anqing City, Anhui, China.
Chinese name. Dà Guān Hān Cài (大观蔊菜).
Wei Zhang, Xiao-Yan Xiang, Ting-Shen Han, Jian-Wen Shao and Kai Zhao. 2025. Rorippa daguanensis (Brassicaceae), A New Species from eastern China. PhytoKeys. 253: 189-198. DOI: doi.org/10.3897/phytokeys.253.145997
