Hoya australis

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Hoya australis
Hoya australis (23741638141).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Hoya
Species:
H. australis
Binomial name
Hoya australis
R.Br. ex J. Traill

Hoya australis, commonly known as the waxvine or common waxflower, is one of the species in the genus Hoya . It is a vine found on rainforest margins and rocky areas, and occurs in eastern and northern Australia, from Western Australia, [1] through the Northern Territory and coastal Queensland from Cape York to northern New South Wales. It is a popular garden plant, noted for its fragrant flowers.

Contents

Taxonomy

The common waxflower was originally described in 1828 by the botanist Robert Brown, its specific epithet australis is Latin for "southern". [2]

Subspecies


Description

Hoya australis is an evergreen climbing vine which may reach 4–10 m (13–33 ft). It has simple opposite glabrous (shiny) leaves 3–6 cm long and 2–5 cm wide. They are succulent (thick and fleshy) and elliptical or ovate in shape; leaves growing in sunnier positions are a more yellowish green while those in shadier locales are dark green in colour. Flowering may occur at any time of year. The flowers appear in axillary umbellate clusters at the apex of 0.5–2.5 cm long peduncles. Each flower is 1.5–2.5 cm in diameter, with five thick, waxy, triangular petals, and white with each lobe marked red. They have a strong sweet scent and produce abundant nectar. [4]

Ecology

It serves as a food plant for the caterpillars of the Queensland butterfly the no-brand crow ( Euploea alcathoe ), [5] and the common Australian crow ( E. core ). [6] Flowers are pollinated by the southern grass-dart ( Ocybadistes walkeri ). [7]

Distribution and habitat

In Australia, it is found from Grafton in northern New South Wales northwards to Cape York in north Queensland. It grows on the edges of rainforest and in rocky exposed habitats.

Cultivation

It is a popular garden and houseplant in Australia, where it flowers best in a well-lit position. It is often grown in containers and trained to grow on trellises on verandahs, fences and in glasshouses. It is a butterfly-attracting plant in the garden. [6] It can be grown indoors provided it receives direct sunlight. [8] The typical form is one of the easier Hoyas to grow, and flowers when relatively young. There are several named forms including the variegated 'Lisa'.

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<i>Litsea australis</i> Species of tree

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Paul Irwin Forster is an Australian botanist. He obtained his doctorate from the University of Queensland in 2004 with his thesis The pursuit of plants : studies on the systematics, ecology and chemistry of the vascular flora of Australia and related regions.

References

  1. Spooner, Amanda; Western Australian Herbarium (1999). "Hoya australis subsp. rupicola (K.D. Hill) P.I. Forst. & Liddle". Florabase — the Western Australian Flora. Department of Biodiversity, Conservation and Attractions.
  2. Simpson, D.P. (1979). Cassell's Latin Dictionary (5th ed.). London: Cassell. p. 883. ISBN   0-304-52257-0.
  3. "Overview of Hoya Australis". MicroVeggie. 7 November 2021.
  4. Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1990). Encyclopaedia of Australian Plants Suitable for Cultivation. Vol. 5, Gr–J. Port Melbourne: Lothian Press. pp. 386–7. ISBN   0-85091-285-7.
  5. Braby, Michael F. (2005). The Complete Field Guide to Butterflies of Australia. Collingwood, Victoria: CSIRO Publishing. pp.  194. ISBN   0-643-09027-4.
  6. 1 2 Clyne, Densey (2000). Attracting Butterflies to Your Garden. Sydney: Reed New Holland. p. 50. ISBN   1-876334-56-8.
  7. Forster, Paul I. (1992). "Pollination of Hoya australis (Asclepiadaceae) by Ocybadistes walkeri sothis (Lepidoptera: Hesperidae)". Australian Entomological Magazine. 19: 39–43.
  8. Ratcliffe, David; Ratcliffe, Patricia (1987). Australian Native Plants for Indoors. Crows Nest, NSW: Little Hills Press. p. 98. ISBN   0-949773-49-2.