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| Impatiens plicatisepala C.Y. Zou, Yan Liu & S.X. Yu in Zou, Liu, Li & Yu, 2020. 褶萼鳳仙花 || taiwania.ntu.edu.tw |
Abstract
Impatiens plicatisepala C. Y. Zou, Yan Liu & S. X. Yu (Balsaminaceae), a new species from Ziyuan County Guangxi, China, is described and illustrated. It is closely related to Impatiens davidii Franchet and Impatiens dicentra Franchet ex J. D. Hooker, all of them having 1-flowered inflorescence and basal lobe of lateral united petals with a filamentous hair. This new species has unique characters and differs from its relatives by plicated sepals, rugose seeds and two bracts in different shapes.
Keyword: Balsaminaceae, China, Impatiens, Impatiens davidii, Impatiens dicentra, morphology, new species, taxonomy
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| Fig. 1. Impatiens plicatisepala C.Y. Zou, Yan Liu & S.X. Yu A. Flower branch, B. Leaf base dorsal view with stipitate glands, C. Flower, front view, D. Lateral sepals, E. Dorsal petal, lateral view, F. Lateral united petals, G. Lower sepal, lateral view, H. Stamens and pistils. I. Bracts, lateral view, J. Bracts, front view, K. Bracts, dorsal view. |
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| Fig. 2. Impatiens plicatisepala C. Y. Zou, Yan Liu & S. X. Yu A. Habitat, B. Habit, C. Flower, front view, D. Flower, lateral view, E. Flower, bottom view, F. Dissected floral parts, a. dorsal petal, b. lateral united petals, c. lateral sepals, d. lower sepal, e. stamens, G. Dorsal petal, adaxial view, H. Lateral sepals, I. Lateral united petals, J. Seeds, K. Capsule, L. Leaf. |
Impatiens plicatisepala C. Y. Zou, Yan Liu & S. X. Yu,
sp. nov.
褶萼鳳仙花
Diagnosis: Impatiens plicatisepala differs from I.
davidii and I. dicentra in the stipitate glands at leaf base,
the dimorphic bracts (one linear, the other broadly ovate),
the broadly ovate and abaxially plicate lateral sepals, and
the ellipsoid and rugose seeds.
....
Distribution and habitat: At present Impatiens
plicatisepala is only discovered in Ziyuan County in
northern Guangxi, China. It grows directly in open or
partly shaded moist places, along streams and muddy
places, between 1000–1500 m.
Etymology: The specific epithet ‘plicatisepala’ is named
according to the characteristic of plicated lateral sepals
Chun-Yu Zou, Yan Liu, Jin Li and Sheng-Xiang Yu. 2020. Impatiens plicatisepala (Balsaminaceae), A New Species from Guangxi, China. Taiwania. 65(4); 544‒547. DOI: 10.6165/tai.2020.65.544
