Backhousia
Backhousia citriodora
Backhousia is a genus of flowering plants in the myrtle family ( Myrtaceae ). All about nine species are originally found only in the Australian states of Queensland and New South Wales.
- 5.1 Notes and references
Description
Appearance and leaves
Backhousia species grow as evergreen shrubs or trees. They contain essential oils.
The constantly against arranged on the branches leaves are divided into petiole and leaf blade. On the simple leaf blades, the leaf veins are clearly visible. There are no stipules present.
Inflorescences and flowers
The lateral or terminal inflorescences are constructed differently depending on the type. The hermaphrodite flowers are radial symmetry and usually five, rarely cruciform with a double perianth. The five or rarely four free, eye-catching, durable sepals are sometimes kronblattartig. The five or rarely four free, durable petals are usually smaller than the sepals. The many fertile, free stamens are arranged in several circles. Two carpels are fused to a half under continuous, two-chambered ovary. In central angle constant placentation few ovules are arranged in a U -shape. The long style ends in a simple scar.
Fruit and seeds
There are mostly thin-walled indehiscent fruits, rare schizocarps formed, which normally contain only one or two seeds. Sepals and petals are visible on the fruit. The seeds are flattened ovoid.
Distribution and threat
The genus Backhousia comes with about nine species in Australia in the states of Queensland (all nine species) and New South Wales before.
No species is considered threatened.
System
The genus Backhousia in 1845 erected by William Jackson Hooker and William Henry Harvey in Botanical Magazine, Plate 4133. As Lectotypusart 1956 Backhousia myrtifolia Hook. & Harv. set ..
The genus belongs to the tribe Backhousia Backhousieae in the subfamily Myrtoideae within the family of Myrtaceae.
There are about nine Backhousia types:
- Backhousia angustifolia F.Muell.
- Backhousia bancroftii F.M.Bailey & F.Muell.
- Backhousia citriodora F.Muell.
- Backhousia Enata A.J.Ford, Craven & J.Holmes
- Backhousia hughesii C.T.White
- Backhousia kingii Guymer
- Backhousia myrtifolia Hook. & Harv.
- Backhousia oligantha A.R.Bean
- Backhousia sciadophora F.Muell.
Use
The intensely fragrant lemon- Backhousia citriodora (English " Lemon Ironwood " ) is used as an ornamental plant in parks and gardens.