''Styphelia perileuca'', commonly known as montane green five-corners, is a plant in the heath family

Ericaceae The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with c.4250 known species spread across 124 genera, making it th ...

and is endemic to

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

. It is an erect, spreading shrub with broad leaves with a spiky tip, and yellowish-green and red tube-shaped flowers with the

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 ...

s rolled back. It is only known from the eastern edge of the New England Tableland.

Description

''Styphelia perileuca'' is a spreading shrub which grows up to tall and wide. Its leaves are mostly broadly elliptic in shape, long, wide, slightly dished with very fine teeth along the edge and a sharp point on the tip. The flowers are tube-shaped, yellowish green in colour with fine red stripes and hang singly from upper 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. There are five

glabrous Glabrousness (from the Latin '' glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part of ...

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 ...

s long. The five petals are joined, forming a tube long with the tips of the petals rolled back and hairy on the inside surface. The

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 are straight and extend beyond the end of the petal tube. Flowering occurs mostly between September and January but flowers are also present in April. Styphelia perileuca (habit)

Taxonomy and naming

''Styphelia perileuca'' was first formally described in 1992 by Jocelyn Powell and published in '' Telopea''. 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 ...

(''perileuca'') is derived from the

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...

words ''peri'' meaning "around" and ''leukos'' meaning "white" referring to the thin white perimeter of the leaves.

Distribution and habitat

Montane green five-corners is only known from

Cathedral Rock National Park Cathedral Rock is a national park west of Waterfall Way in New South Wales, Australia, east of Armidale and about north of Sydney. This park is lying between the Guy Fawkes River and Macleay Range, and is about six kilometres west of Eb ...

, the

New England National Park The New England National Park is a protected national park located on the Northern Tablelands in the New England region of New South Wales, Australia. The park was created in May 1935 and is situated approximately north of Sydney, and south ...

and near

Maclean MacLean, also spelt Maclean and McLean, is a Gaelic surname Mac Gille Eathain, or, Mac Giolla Eóin in Irish Gaelic), Eóin being a Gaelic form of Johannes (John). The clan surname is an Anglicisation of the Scottish Gaelic "Mac Gille Eathai ...

. It grows in shrubland near swamps and in forest.

Conservation

''Styphelia perileuca'' is classified as "vulnerable" under the Australian 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 ...

'' and the New South Wales Government '' Biodiversity Conservation Act 2016''. The main threats to the species are its small population size and narrow distribution.

References

{{Taxonbar, from=Q17242567 perileuca Flora of New South Wales Plants described in 1992