Zieria verrucosa

Zieria verrucosa is a plant in the citrus family Rutaceae and is endemic to a small area of Queensland. It is a densely-branched, hairy shrub with three-part, clover-like leaves and large groups of creamy-white to pink, four-petalled flowers.

Zieria verrucosa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Zieria
Species:
Z. verrucosa
Binomial name
Zieria verrucosa
J.A.Armstr.

Description

Zieria verrucosa many-branched, hairy shrub which grows to a height of 1.5 m (5 ft). The leaves are composed of three narrow leaflets with the central one, 8–50 mm (0.3–2 in) long and 1–5 mm (0.04–0.2 in) wide. The upper surface of the leaflets is dark green with scattered hairs and the lower surface is whitish and velvety-hairy. The leaves are covered with glands and many small lumps or tubercules and are strongly scented, especially when crushed. The flowers are arranged in the leaf axils in groups of up to 60 but the flowers are small and the groups are shorter than the leaves. The flowers are creamy-white to pink and 4–6 mm (0.16–0.24 in) in diameter. Flowering occurs between August and February and the fruits which follow are glabrous capsules with many glands.[1][2]

Taxonomy and naming

Zieria verrucosa was first formally described in 2002 by James Armstrong and the description was published in Australian Systematic Botany.[3][4] The specific epithet (verrucosa) is a Latin word meaning "full of warts".[5]

Distribution and habitat

This zieria is only known from a small area near Mundubbera where it grows in vine thicket, Eucalyptus crebra or ironbark woodland.[1][2]

Conservation

Zieria verrucosa is listed as "Vulnerable" under the Commonwealth Government Environment Protection and Biodiversity Conservation Act 1999 (EPBC) Act and under the Queensland Nature Conservation Act 1992. The main threats to the species are land clearing, cattle grazing and inappropriate fire regimes.[1][2]

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References
  1. "Approved Conservation Advice for Zieria verrucosa" (PDF). Government of Australia Department of Environment. Retrieved 28 October 2017.
  2. "Zieria verrucosa". Queensland Government Department of Environment and Heritage Protection. Retrieved 28 October 2017.
  3. "Zieria verrucosa". APNI. Retrieved 28 October 2017.
  4. Armstrong, Jim A. (2002). "The genus Zieria (Rutaceae): a systematic and evolutionary study". Australian Systematic Botany. 15 (3): 456–457. doi:10.1071/SB00040.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 842.
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