Cardiandra
| Cardiandra | ||||||||||||
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Cardiandra alternifolia , illustration |
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| Scientific name | ||||||||||||
| Cardiandra | ||||||||||||
| Siebold & Zucc. |
Cardiandra is a genus of plants fromthe hydrangea family (Hydrangeaceae). The genus includes six species thatare nativeto East Asia .
description
The species of the genus are perennial, herbaceous plants that grow from a rhizome. The stalked, alternate leaves are serrated on the edge.
The inflorescences are zymous panicles . Some of the flowers are sterile. The four to five (seldom six) sepals are folded over one another. The four to five (rarely six) petals , arranged like a roof tile, are egg-shaped, white and bent back at the time of flowering.
The stamens of the 12 to 25 stamens are thread-shaped, the stylodes are not grown. The medium-sized ovary is two to three, rarely four to fünffächrig, most ovules lie in upright. The fruit is a capsule that opens at the very end to release the numerous, 0.5 to 1.0 millimeter long, winged seeds.
distribution
The species of the genus are native to East Asia and can be found there in moist mountain forests .
Botanical history and systematics
The genus was first described in 1835 by Philipp Franz von Siebold and Joseph Gerhard Zuccarini in their Flora Japonica . Within the family it is placed in the subfamily Hydrangeoideae and there in the tribe Hydrangeae.
The internal system of the genre is considered to be in need of revision. It includes only a few species, including:
- Cardiandra alternifolia Siebold & Zucc. : It was first described from Japan.
- Cardiandra formosana Hayata : It occurs in Taiwan and in Zhejiang.
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Cardiandra moellendorffii (Hance) Migo : It occurs in Japan on the Ryūkyū Islands and in China at altitudes between 700 and 1500 meters. There are two varieties:
- Cardiandra moellendorffii var. Moellendorffii : It occurs on the Ryūkyū Islands and in Anhui, Fujian, Jiangxi and Zhejiang.
- Cardiandra moellendorffii var. Laxiflora (HL Li) CF Wei : It occurs in Guangdong, Guangxi, Guizhou, Hubei and Hunan.
Web links
literature
- Larry Hufford: Hydrangeaceae. In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants, Volume VI, Flowering Plants - Dicotyledons - Celastrales, Oxalidales, Rosales, Cornales, Ericales , 2004, p. 211, ISBN 978-3-540-06512- 8th
Individual evidence
- ↑ a b c d Wei Zhaofen (Wei Chao-fen); Bruce Bartholomew: Cardiandra Siebold & Zuccarini - the same text online as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (eds.): Flora of China. Volume 8: Saxifragaceae. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2010