Flindersia australis
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Immature capsules of Flindersia australis |
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| Flindersia australis | ||||||||||||
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Flindersia australis , also known as Crow's Ash (crow's ash), Australian teak , Nutwood or Flindosy called, is a plant species in the genus Flindersia from the family of the Rutaceae (Rutaceae). The characteristic fruits draw attention to the tree. The genus was named after the leader of the expedition on which the first species was discovered, Captain Matthew Flinders ; australis means south.
description
Flindersia australis is a semi-evergreen tree that reaches heights of growth of 25 to 30 meters (in the dry rainforest up to 40 meters) and a trunk diameter of 75 to 150 centimeters. The rather smooth bark is gray-brown and slightly scaly.
The mostly alternate, sometimes opposite, imparipinnate and stalked leaves are arranged at the branch ends. The petioles are up to 10-15 cm long. They usually consist of 5 to 9 (3 to 15) entire leaflets . The ovate to obovate or lanceolate leaflets are short-petioled, except for the longer-stalked terminal leaflet, and 2.4 to 13 cm long and 0.8 to 4.3 cm wide. The tip is pointed to rounded, the veins are pinnate. The leaflets are more or less hairy and they have oil cells. The young leaves are bronze in color.
The decorative, terminal or axillary paniculate inflorescences are up to 15 cm long and attract orchid butterflies , bees , wasps and moths in the home country from August to February . The five-fold blooms with a double perimeter are about 11 mm in diameter and are hermaphroditic or functionally male. The five, green-yellowish sepals with hair on the outside are 2.2 to 2.5 mm long and persistent. The five white to cream-colored petals are 5 to 7 mm long and hairy outside, except on the edge, and only slightly inside. There is a circle with five free, fertile stamens and a circle with five, priemlichen staminodes . The five carpels have become a top permanent ovary grown. The stylus is short overgrown with five scars . There is a lobed disc .
The woody, specicidal capsule fruit ("Crow's Nest") is 7 to 10 cm long and covered with round-pointed, short and conical spines. It usually splits into five boat-shaped compartments connected at the bottom. Each compartment, “boat”, contains a central fleshy placenta on each side . The fruits ripen between April and November. Each compartment usually contains four flat seeds , only winged at one end , about 3.4 to 5 cm long (with wings). The seeds germinate quickly and they are not edible.
Occurrence
In Western Australia, in Queensland and New South Wales, they grow naturally in rain and eucalyptus forests .
use
They are cultivated for timber and as a street tree. This species is an excellent shade and avenue tree.
The wood is very heavy and durable. Valued as construction timber, especially for flooring. It is also considered Moaholz known or Edelteak, "Native teak".
The sapwood is light yellow and the heartwood has a yellow-brown smeared texture with a hard-settled grain. The wood is very popular for dance floors. It can be used for ship and boat building, parquet , warehouse floors, sports buildings, furniture and veneers . It is sensitive to sapwood beetle Lyctid Borer ( Lyctinae ). The density is 1050 kg / m³ (green) to 945 kg / m³ (dry) and requires slow drying.
'Australis F.' is a slow growing plantation variety.
There have been reports of dermatitis (hands, face, arms) in sawmill workers.
swell
- Description in the New South Wales Flora Online .
- Flindersia australis at Australian Tropical Rainforest Plants.
- JH Maiden : New South Wales Forestry Hanbook. Part II, Gullick, 1907, p. 196 ff, pl. 67, 68, online at biodiversitylibrary.org.
Web links
- Flindersia australis at Useful Tropical Plants.
- Flindersia australis on BoDD - Botanical Dermatology Database.
- crow's nest ash Flindersia australis at Forestry Images.