Eremophila granitica

Eremophila granitica, commonly known as granite poverty bush[2] and thin-leaved poverty bush[3] is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect, open shrub with sticky, narrow leaves and with lilac-coloured flowers.

Granite poverty bush
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Scrophulariaceae
Genus: Eremophila
Species:
E. granitica
Binomial name
Eremophila granitica

Description

Eremophila granitica is an erect, open or straggling shrub which grows to a height of between 0.5 and 2.5 m (2 and 8 ft) with sticky, wrinkled, shiny branches. The leaves are arranged alternately along the stems and are mostly 16–38 mm (0.6–1 in) long, 0.8–1.5 mm (0.03–0.06 in) wide, linear, sometimes with a few small teeth along the edges. They are also shiny and sticky and have small, raised glands on their surface.[2][3]

The flowers are borne singly in leaf axils on a flattened, S-shaped stalk 10–35 mm (0.4–1 in) long. There are 5 lance-shaped, sticky, shiny green to purple sepals, differing in size from each other, mostly 10–15.5 mm (0.4–0.6 in) long but often enlarging after flowering. The petals are 20–35 mm (0.8–1 in) long and are joined at their lower end to form a tube. The petal tube is a shade of lilac or pinkish-lilac on the outside and white, spotted with orange-brown inside. The outside of the tube and petal lobes are hairy but the inside of the lobes is glabrous and the inside of the tube is woolly. The centre part of the lower petal lobe closes the opening of the petal tube. The 4 stamens are fully enclosed in the petal tube. Flowering occurs from March to November and is followed by fruits which are dry, woody, oval-shaped with a pointed end, hairy and about 7 mm (0.3 in) long.[3][2]

Taxonomy and naming

The species was first formally described in 1899 by Spencer Le Marchant Moore and the description was published in Journal of the Linnean Society, Botany.[4][5] The specific epithet (granitica) is a Latin word meaning "granitic" or "living on granite soil",[6] referring to the habitat of this species.[3]

Distribution and habitat

Eremophila granitica is widespread and common between Kalgoorlie and Murchison in the Avon Wheatbelt, Coolgardie, Gascoyne, Gibson Desert, Murchison and Yalgoo biogeographic regions.[2][7][8] It grows in sand, or clay on granite rocks, ironstone hills and flat areas.[2]

Ecology

The native bee Leioproctus lanceolatus has been observed pollinating E. granitica.[9]

Conservation status

Eremophila granitica is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[7]

Use in horticulture

Some forms of this eremophila are rarely without flowers and some specimens have been in cultivation for more than 30 years. It is a hardy shrub and needs little attention. It can be propagated from cuttings or by grafting but plants grown on their own roots need to be grown in light to medium soils. It can grow in full sun or partial shade, is both drought and frost tolerant and responds well to even harsh pruning when provided with water.[10]

References
  1. "Eremophila granitica". Australian Plant Census. Retrieved 5 May 2020.
  2. Brown, Andrew; Buirchell, Bevan (2011). A field guide to the eremophilas of Western Australia (1st ed.). Hamilton Hill, W.A.: Simon Nevill Publications. p. 144. ISBN 9780980348156.
  3. Chinnock, R.J. (Bob) (2007). Eremophila and allied genera : a monograph of the plant family Myoporaceae (1st ed.). Dural, NSW: Rosenberg. pp. 361–363. ISBN 9781877058165.
  4. "Eremophila granitica". APNI. Retrieved 1 February 2016.
  5. Moore, Spencer Le Marchant (1899). "The Botanical Results of a Journey into the Interior of Western Australia". Journal of the Linnean Society, Botany. 34: 214–215. Retrieved 1 February 2016.
  6. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 210. ISBN 9780958034180.
  7. "Eremophila granitica". FloraBase. Western Australian Government Department of Parks and Wildlife.
  8. Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 337. ISBN 0646402439.
  9. "Native lanceolatus colletid". Plant Biosecurity Cooperative Research Centre. Retrieved 1 February 2016.
  10. Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. pp. 107–108. ISBN 9781876473655.
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