''Zieria collina '' commonly known as hill zieria, is a plant in the citrus

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Rutaceae The Rutaceae is a family, commonly known as the rueRUTACEAE
in BoDD – Botanical Derm ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to a small area in south-east

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

. It is a large, spreading shrub with leaves composed of three leaflets, and small flowers with four white

petal Petals are modified Leaf, leaves that surround the reproductive parts of flowers. They are often advertising coloration, brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''c ...

Description

''Zieria collina'' is a spreading shrub with velvety hairs and which grows to a height of . The leaves are arranged in opposite pairs and are composed of elliptic to lance-shaped leaflets long and wide. The upper surface of the leaflets is a darker shade of green than the lower surface and usually has a few hairs and

tubercle In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection ...

s while the lower surface in densely covered with velvety hairs. The leaf stalk is long. The flowers are bright white, about in diameter and are arranged in groups of 15 to 30 in leaf

axil A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...

s and the groups are usually longer than the leaves. The

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

have four lobes and there are four petals. In common with other zierias, there are only four

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s. Flowering mainly occurs from August to October but flowers are often seen at other times. Fruit opens about six weeks after flowering.

Taxonomy and naming

''Zieria collina'' was first formally described in 1932 by

Cyril Tenison White Cyril Tenison ("C.T.") White (17 August 1890 – 15 August 1950) was an Australian botanist. Early life White was born in Brisbane to Henry White, a trade broker, and Louisa ''nee'' Bailey. He attended school at South Brisbane State School, an ...

and the description was published in ''

Proceedings of the Royal Society of Queensland ''Proceedings of The Royal Society of Queensland'' is a multidisciplinary scientific journal published by The Royal Society of Queensland The Royal Society of Queensland was formed in Queensland, Australia in 1884 from the Queensland Philo ...

''. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''collina'') is a

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

word meaning "of a hill". New South Wales Flora Online features a photo of the Herbarium Sheet.

Distribution and habitat

This zieria grows near the edge of rainforest on and near

Tamborine Mountain Tamborine Mountain is a plateau and locality in the Scenic Rim Region, Queensland, Australia. In the , Tamborine Mountain had a population of 7,506 people. Geography The plateau is a , . The name is from the of Yugumbir language of the Wanger ...

. It sometimes forms dense thickets and seems to respond to disturbance.

Conservation

''Zieria collina'' is classified as "Vulnerable" under the Commonwealth Government ''

Environment Protection and Biodiversity Conservation Act 1999 The ''Environment Protection and Biodiversity Conservation Act 1999'' (Cth) is an Act of the Parliament of Australia that provides a framework for protection of the Australian environment, including its biodiversity and its natural and cultu ...

'' (EPBC) Act. The main threat to its survival is invasion by

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there ...

, especially lantana (''

Lantana camara ''Lantana camara'' (common lantana) is a species of flowering plant within the verbena family (Verbenaceae), native to the American tropics. It is a very adaptable species, which can inhabit a wide variety of ecosystems; once it has been introduc ...

'').

References

{{Taxonbar, from=Q18084025 collina Sapindales of Australia Flora of New South Wales Plants described in 1932