Eremophila pinnatifida, commonly known as Dalwallinu eremophila[2] is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a spreading, rounded shrub with aromatic, deeply divided leaves and pale purple flowers which are white with purple spots inside. It is a rare plant, known only from a few areas near Perth.
| Eremophila pinnatifida | |
|---|---|
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| Foliage of E. pinnatifida in Kings Park, Perth | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Scrophulariaceae |
| Genus: | Eremophila |
| Species: | E. pinnatifida
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| Binomial name | |
| Eremophila pinnatifida | |
Description
editEremophila pinnatifida is an erect, rounded, aromatic shrub which grows to a height of between 0.6 and 1.0 m (2 and 3 ft). Its branches are mostly hidden by the leaves and are densely hairy with both yellow glandular and simple hairs. The leaves are arranged in whorls of 3, overlap each other and are oblong to egg-shaped, deeply divided, 5–9.5 mm (0.2–0.4 in) long and 2.5–4.5 mm (0.1–0.2 in) wide. They are sticky due to the presence of resin, densely covered with glandular hairs on both surfaces and with longer white hairs mainly only on the upper surface.[2][3]
The flowers are borne singly in leaf axils and lack a stalk. There are 5 green, linear to lance-shaped, hairy sepals which are 5–8 mm (0.2–0.3 in) long. The petals are 18–25 mm (0.7–1 in) long and are joined at their lower end to form a tube. The petal tube is pale to deep purple on the outside and white with pale purple spots inside. The outer surface of the tube and lobes is hairy but the inner surface of the petal lobes is glabrous and the inside of the tube is filled with long, soft hairs. The 4 stamens are fully enclosed in the petal tube. Flowering occurs from August to January and is followed by fruits which are dry, woody, oval-shaped with a pointed end and about 4 mm (0.2 in) long with a hairy covering.[2][3]
Taxonomy and naming
editThis 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.[4] The specific epithet is from the "Latin pinnatifida, lobed in a pinnate manner, the lobes cut to about three-quarters of the way to the midrib".[3]
Distribution and habitat
editEremophila pinnatifida grows in loamy soil in tall, open Eucalyptus woodland between Dalwallinu and Wongan Hills[2][3] in the Avon Wheatbelt biogeographic region.[5]
Conservation
editE. pinnatifida is classified as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia)[5] and an Interim Recovery Plan has been prepared.[6]
Use in horticulture
editThis is a fast-growing shrub with attractive, fern-like leaves and massed flower displays in spring and early summer. It is widely grown in eastern Australia but is sometimes short-lived. It can be easily grown from cuttings and grows in most soils, including clay but prefers a sunny position. It is tolerant of long droughts and of frost.[7]
References
edit- ^ "Eremophila pinnatifida". Australian Plant Census. Retrieved 6 September 2020.
- ^ 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. 214. ISBN 9780980348156.
- ^ a b c d Chinnock, R.J. (Bob) (2007). Eremophila and allied genera : a monograph of the plant family Myoporaceae (1st ed.). Dural, NSW: Rosenberg. pp. 283–284. ISBN 9781877058165.
- ^ "Eremophila pinnatifida". APNI. Retrieved 28 February 2016.
- ^ a b "Eremophila pinnatifida". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Pinnate-leaved eremophila (Eremophila pinnatifida ms) interim recovery plan" (PDF). Australian Government Department of the Environment. Retrieved 18 February 2016.
- ^ Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. pp. 143–144. ISBN 9781876473655.