Radermachera
Room ash
The Radermachera are a genus which belongs to the family Bignoniaceae ( Bignoniaceae ). Your about 16 deciduous tree species are native to the tropical areas of Asia. It is named after an officer of the Dutch East India Company and naturalist Jacob Cornelis Mattheus Radermacher ( 1741-1783 ).
Description
The representatives of the Radermachera are evergreen trees. The oppositely arranged leaves are constantly feathered one to three times. The stalked part leaves are entire.
The terminal or axillary inflorescences are paniculate, or may be reduced in some species to simple tufts. The support and bracteoles are linear or deciduous leaf-like.
The hermaphrodite, zygomorphic flowers are fünfzählig. The five sepals are fused with five bell-shaped calyx lobes or only cut five times. The five petals are funnel - bell or salverform fused, the corolla tube may be long or short. The coronary band is slightly bilobed, the lobes are rounded and protruding. The flower base is circular and slightly fleshy. It's just a circle with five stamens vonhanden, most of which only four are fertile (rarely five), they come in two different lengths, but can also be almost the same length, usually the fifth stamen is a Staminodium. The Upper constant ovary is turning round and contains a number of ovules, which are two rows in each fruit chamber. The stylus does not protrude out from the crown. The scar is tongue- shaped and bilobed.
The longitudinally dehiscent capsule fruit is bent twice, otherwise turning round and elongated and contains many seeds. The septum is pressed and woody. The seeds are pressed and busy at both ends with translucent wings.
Systematics and distribution
The genus includes about 16 species that are widespread in tropical Asia.
Selection of species:
- Radermachera frondosa
- Radermachera glandulosa
- Radermachera hainanensis
- Radermachera microcalyx
- Radermachera pentandra
- Rooms Ash ( Radermachera sinica )
- Radermachera yunnanensis
Use
The rooms Ash ( Radermachera sinica ) has decorative foliage and is a relatively rare houseplant.
Swell
- Zhi- Yun Zhang and Thawatchai Santisuk: Flora of China, Volume 18, page 218, 1998.