Zieria eungellaensis

Zieria eungellaensis is a plant in the citrus family Rutaceae and is only found on a few isolated mountains in Queensland. It is a compact but open shrub with wiry branches, three-part leaves and flowers in small groups, each flower white or pink with four petals and four stamens, and is endemic to the Eungella National Park.

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

Description

Zieria eungellaensis is an compact but open shrub which grows to a height of 2 m (7 ft) and has rough, wiry branches which are sometimes hairy. The leaves have a petiole 2–8 mm (0.08–0.3 in) long and a central leaflet which is elliptic to egg-shaped, 5–16 mm (0.2–0.6 in) long, 3–8 mm (0.1–0.3 in) wide with the other two leaflets slightly smaller. Only the midvein is distinct on the lower surface and unlike some other zierias, the leaf surface is not obviously warty.[2]

The flowers are white and are arranged singly or in groups of two or three in leaf axils on a slightly warty stalk 1–3 mm (0.04–0.1 in) long, the groups shorter than the leaves. The sepals are mostly glabrous, less than 1 mm (0.04 in) long and wide and the four petals are elliptic in shape, 2.5–3.5 mm (0.098–0.14 in) long, 1.2–1.5 mm (0.05–0.06 in) wide, varying between populations. The four stamens are about 1 mm (0.04 in) long. Flowering occurs between May and August and is followed by fruit which is a glabrous capsule, about 3 mm (0.1 in) long and 2 mm (0.08 in) wide.[2]

Taxonomy and naming

Zieria eungellaensis was first formally described in 2007 by Marco Duretto and Paul Forster from a specimen collected on Mount William in the Eungella National Park. The description was published in Austrobaileya.[1] The specific epithet (eungellaensis) is a reference to the range of this species in the Eungella National Park.[2]

Distribution and habitat

This zieria grows in rock crevices surrounded by dense, heathy vegetation on mountain summits in the Eungella National Park. Plants have been seen on Mount William, Mount David and Mount Dalrymple.[2]

Conservation

Zieria eungellaensis is listed as "least concern" under the Queensland Nature Conservation Act 1992.[3]

References
  1. "Zieria eungellaensis". APNI. Retrieved 10 March 2017.
  2. Duretto, Marco F.; Forster, Paul I. (2007). "A taxonomic revision of the genus Zieria Sm. (Rutaceae) in Queensland". Austrobaileya. 7 (3): 500–502.
  3. "Zieria eungellaensis". Queensland Government, Department of Environment and Heritage Protection. Retrieved 10 March 2017.
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