Eremophila vernicosa, commonly known as resinous poverty bush, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect shrub with its glabrous leaves and branches appearing varnished due to a thick covering of resin. It has small leaves and white to pale mauve flowers.
| Resinous poverty bush | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Scrophulariaceae |
| Genus: | Eremophila |
| Species: | E. vernicosa
|
| Binomial name | |
| Eremophila vernicosa | |
Description
editEremophila vernicosa is an erect shrub which grows to a height of up to 2 m (7 ft) with glabrous branches which are thickly covered with resin, making them appear varnished when young, or white when mature. The leaves are arranged alternately, overlapping and clustered along the branches. They are thick, stiff, egg-shaped to elliptic, 3–6 mm (0.1–0.2 in) long, 2–3.5 mm (0.08–0.1 in) wide, sticky and shiny. There is a distinct mid-vein on the lower surface and the edges often have a few teeth near the ends.[2][3]
The flowers are borne singly in leaf axils on sticky stalks 2–3.5 mm (0.08–0.1 in) long. There are 5 overlapping, green to purple, shiny, egg-shaped to spoon-shaped sepals which are 3.8–5 mm (0.15–0.20 in) long. The petals are 9–11 mm (0.35–0.43 in) long and are joined at their lower end to form a tube. The petal tube is lilac-coloured to light purple and densely covered on both the inner and outer surfaces with a layer of simple hairs that are pressed against the surface. The inside of the tube is filled with long, soft hairs. The 4 stamens are fully enclosed in the petal tube. Flowering mainly occurs between August and September and is followed by fruits which are oblong to oval-shaped and about 3.5 mm (0.1 in) long and have a ribbed surface.[2][3]
Taxonomy and naming
editThe species was first formally described by Robert Chinnock in 2007 and the description was published in Eremophila and Allied Genera: A Monograph of the Plant Family Myoporaceae. The specific epithet is from the Latin vernicosa, 'varnished'.[4][2]
Distribution and habitat
editThis eremophila occurs in the Kalannie - Gunyidi area[3] in the Avon Wheatbelt biogeographic region[5] where it grows on the slopes of low lateritic hills.[3]
Conservation
editEremophila vernicosa is classified as "vulnerable" by the Environment Protection and Biodiversity Conservation Act 1999[6] and as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia)[5] meaning that it is likely to become extinct or is rare, or otherwise in need of special protection.[7]
Use in horticulture
editThe white stems and dark green leaves contrasting with small, delicate pink flowers are attractive features of this small shrub. It can be propagated from cuttings and grows well on its own roots in a wide range of soil types in a sunny position or in part shade. It rarely needs watering, even during a long dry spell, is very frost tolerant and can be pruned lightly to keep it in shape.[8]
References
edit- ^ "Eremophila vernicosa". Australian Plant Census. Retrieved 30 August 2020.
- ^ a b c Chinnock, R.J. (Bob) (2007). Eremophila and allied genera : a monograph of the plant family Myoporaceae (1st ed.). Dural, NSW: Rosenberg. pp. 281–284. ISBN 9781877058165.
- ^ a b c d Brown, Andrew; Buirchell, Bevan (2011). A field guide to the eremophilas of Western Australia (1st ed.). Hamilton Hill, W.A.: Simon Nevill Publications. p. 278. ISBN 9780980348156.
- ^ "Eremophila vernicosa". APNI. Retrieved 26 March 2016.
- ^ a b "Eremophila vernicosa". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Approved Conservation Advice for Eremophila sp. Vernicose (W.E.Blackall 3937) WA Herbarium (Resinous Poverty Bush)" (PDF). Australian Government Department of the Environment. Retrieved 26 March 2016.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 9 August 2019.
- ^ Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. p. 227. ISBN 9781876473655.