Radermachera
| Radermachera | ||||||||||||
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Room ash ( Radermachera sinica ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Radermachera | ||||||||||||
| Inch. & Moritzi |
Radermachera is a genus of plants within the trumpet treefamily(Bignoniaceae). About 16 species of deciduous trees thrive in the tropical regions of Asia.
description
_Roxb._ex_K.Schum._(3307327228).jpg)
Vegetative characteristics
Radermachera species are evergreen trees .
The opposite arranged leaves are divided into a petiole and a leaf blade. The leaf blade is one to three pinnate. The stalked leaflets are entire.
Generative characteristics
The terminal or lateral, paniculate inflorescences can be reduced to simple clusters in some species. The bracts and bracts are linear or foliage-like.
The hermaphrodite, zygomorphic flowers are zygomorphic and five-fold with a double flower envelope . The five sepals are fused bell-shaped with five calyx lobes or only incised five times. The five petals are fused together like a funnel, bell or plate, the corolla tube can be long or short. The coronet is slightly bilobed, the lobes are rounded and protruding. The flower base is circular and slightly fleshy. There is only one circle with five stamens , of which usually only four are fertile (rarely five), they occur in two different lengths, but can also be almost the same length, usually the fifth stamen is a staminodium . The upper permanent ovary is rotationally round and includes a plurality of seed plants , which are in two rows in each fruit chamber. The stylus does not protrude from the crown. The scar is tongue-shaped and bilobed.
The capsule fruit that pops up lengthways is bent twice, otherwise twisting and elongated and contains many seeds. The partition is dented and woody. The seeds are flattened and have translucent wings at both ends.
_Roxb._ex_K.Schum._(7197636000).jpg)
Systematics and distribution
The genus Radermachera was established in 1855 by Heinrich Zollinger and Alexandre Moritzi . The generic name Radermachera honors the officer of the Dutch East India Company and naturalist Jacob Cornelis Mattheus Radermacher (1741–1783).
The genus Radermachera contains about 16 species that are distributed from southern China (seven species) to tropical Asia :
- Radermachera boniana Dop : It occurs in Vietnam .
- Radermachera coriacea Merr. : This endemic occurs only on the island of Luzon ,which belongs to the Philippines.
- Radermachera eberhardtii Dop : It occurs in Vietnam.
- Radermachera frondosa Chun & FCHow : It thrives in forests in the Chinese provinces of Guangdong , Guangxi and Hainan .
- Radermachera gigantea (flower) Miq. : It occurs from Assam to western and central Malesia .
- Radermachera glandulosa (flower) Miq. : It occurs in Assam, Myanmar , Laos , Thailand , Malaysia , Indonesia , the Philippines and in the Chinese provinces of Guangdong and Guangxi.
- Radermachera hainanensis Merr. : It occurs in Cambodia , Laos, Thailand and in the Chinese provinces of Guangdong, Hainan and Yunnan .
- Radermachera inflata Steenis : It occurs in Vietnam.
- Radermachera microcalyx C.Y.Wu : It occurs in the Chinese provinces of Guangxi as well as southern Yunnan and northern Vietnam.
- Radermachera peninsularis Steenis : It occurs from Thailand to the Malay Peninsula .
- Radermachera pentandra Hemsl. : It thrives on slopes and in the forest at altitudes of 1000 to 1700 meters only in southern Yunnan.
- Radermachera quadripinnata (Blanco) Seem. (Syn .: Millingtonia quadripinnata Blanco ): It occurs from the Nicobar Islands to Malesia.
- Radermachera ramiflora Steenis : It occurs on Borneo .
- Zimmeresche ( Radermachera sinica (Hance) Hemsl. ): The distribution area extends from the Himalayas to Malaysia and Taiwan .
- Radermachera stellata Steenis : It occurs in Vietnam.
- Radermachera xylocarpa (Roxb.) Roxb. ex K.Schum. (Syn .: Tecoma xylocarpa (Roxb.) G.Don , Bignonia xylocarpa Roxb. ): The homeland is India.
- Radermachera yunnanensis C.Y.Wu : It thrives on slopes and in the forest at altitudes of 800 to 1100 meters in Yunnan.
No longer counted in this genus:
- Radermachera ignea (short) Steenis → Mayodendron igneum (short) short .
use
The room ash ( Radermachera sinica ) has decorative foliage and is used as a house plant .
swell
literature
- Zhi-Yun Zhang, Thawatchai Santisuk: Bignoniaceae. Radermachera , S. 2018-2019 - the same text online as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Ed.): Flora of China. Volume 18: Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 1998, ISBN 0-915279-34-7 .
Individual evidence
- ↑ Lotte Burkhardt: Directory of eponymous plant names. Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. online.
- ↑ a b c d e f g h i j k l m n Rafaël Govaerts (Ed.): Radermachera. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 19, 2018.
- ↑ a b c d e Zhi-Yun Zhang, Thawatchai Santisuk: Bignoniaceae. Radermachera , S. 2018-2019 - the same text online as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Ed.): Flora of China. Volume 18: Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 1998, ISBN 0-915279-34-7 .
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