Dendrobium kingianum

Dendrobium kingianum is an orchid type from the genus Dendrobium, which is native to the eastern regions of Australia. This epiphytic plant grows in rocky areas, on tree trunks or on rocks and is known for its striking flowers. The species is a popular ornamental plant, both in nature as well as in botanical gardens and private collections.

Taxonomy and nomenclature

The species was first described in 1844 by John Lindley, a British botanist and orchid researcher. The name Dendrobium is derived from the Greek words "Dendron" (tree) and "Bios" (life), which indicates the way of life of many types of genus as epiphytic plants. Kingianum was named in honor of Admiral Phillip Parker King, an Australian seafarer and explorer who also promoted botany.

Morphology and growth form

Dendrobium kingianum is a multi -year, epiphytic or lithophytic orchid that forms dense clumps. It reaches growth heights between 30 and 50 cm. The plant forms long, cylindrical pseudobules, which are about 5 to 20 cm long and 0.5 to 1 cm thick. The pseudobules are light green and sometimes purple colors, especially near the tips.

The leaves of Dendrobium kingianum are leathery and elongated, about 5 to 10 cm long and 1 to 2 cm wide. They are alternately arranged at the upper parts of the pseudobulb. The leaves stay on the plant for several years before they fall off.

Flowers and flowering period

The flowers are the most striking feature of Dendrobium kingianum. The plant produces grape -like inflorescences that carry several flowers. Each flower is about 2 to 3 cm in diameter and varies in the color from light pink to violet. There are also shapes with purely white flowers. The flowers have five outer petals (sepal) and three inner petals (petals), whereby the central petalium, the lip (labelum), is heavily modified and a contrasting color or pattern can have.

The flowering period of Dendrobium kingianum lies in the late winter to spring months, typically from August to November, depending on the climatic conditions. The flowers exude a light fragrance and stay on the plant for about two to four weeks.

Distribution and habitat

Dendrobium kingianum is widespread in the eastern parts of Australia, especially in New South Wales and Queensland. The plant thrives at different altitudes, from the coastal levels to the mountain rangers at heights of up to 1,200 meters. It grows in open forests, on rocks or on tree trunks, where it stuck in columns and cracks. This way of life as lithophyt or epiphyt enables her to survive in nutrient -poor and well -drained environments.

The plant is well adapted to extreme climatic conditions and can survive both dry periods and light frosts. Their resistant pseudobules store water to supply the plant in dry times.

Ecological meaning and pollinator

Dendrobium kingianum plays an important role in the ecosystem, especially in the open forests of Australia. It offers nectar and pollen for various pollinators, including bees and other insects. The symbiotic relationship between orchids and mushrooms, which is called mycorrhiza, is crucial for survival and germination of the seeds. The seeds of orchids are tiny and do not have nutrient reserves, which is why they rely on the partnership with mycorrhizal fungus to germinate and grow.

Cultivation and care

Due to its aesthetic flowers and its adaptability, Dendrobium kingianum is a popular ornamental plant in orchid breeding. It can be cultivated both outdoors in mild climate zones as well as in greenhouses or on window sills. The plant prefers light but indirect light and permeable substrates that ensure good drainage. A mixture of bark, perlit and sphagnum-moos is ideal.

During the growth period in spring and summer, Dendrobium kingianum should be poured regularly and slightly fertilized. In the colder months, a resting phase with a reduced amount of water is required to promote flowering. Temperatures between 5 and 25 ° C are ideal, and the plant tolerates light frosts, as long as it is not permanently exposed to low temperatures.

The propagation is mainly by division of the pseudobulb or by the formation of Kindeln, these are small offshoots that grow on the pseudobulb and can form independent plants.