''Sarcozona bicarinata'', commonly known as ridged noon-flower, is species of flowering plant in the family

Aizoaceae The Aizoaceae, or fig-marigold family, is a large family of dicotyledonous flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is d ...

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 Australia. It is a small shrub with leaves that are triangular in cross-section and arranged in opposite pairs, and daisy-like flowers with twenty to fifty-five petal-like

staminodes In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen.Jackson, Benjamin, Daydon; ''A Glossary of Botanic Terms with their Derivation and Accent''; Published by Gerald Duckworth & C ...

and twenty to fifty

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 ...

Description

''Sarcozona bicarinata'' is an erect, succulent glabrous shrub that typically grows to a height of with

sessile Sessility, or sessile, may refer to: * Sessility (motility), organisms which are not able to move about * Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant * Sessility (medicine), tumors and polyps that ...

leaves arranged in opposite pairs, stem-clasping, long and wide. The leaves are triangular in cross-section but with the sides rounded and the top flat, the edges tinged with pink. The flowers are arranged singly or in pairs with two leaves fused together and partly enclosing the flowers. 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 ...

tube is bell-shaped or cup-shaped long with four or five lobes, and there are between twenty and fifty-five petal-like staminodes surrounding between twenty and fifty white stamens and five styles. The

ovary The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. ...

is long and has two characteristic ribs. Flowering occurs from August to December and the fruit is a succulent capsule long.

Taxonomy

''Sarcozona bicarinata'' was first formally described in 1969 by Stanley Thatcher Blake in '' Contributions from the Queensland Herbarium'' from specimens collected by R.L. Specht near Lock in South Australia.

Distribution

Ridged noon-flower occurs on the Yorke and

Eyre Peninsula The Eyre Peninsula is a triangular peninsula in South Australia. It is bounded by the Spencer Gulf on the east, the Great Australian Bight on the west, and the Gawler Ranges to the north. Originally called Eyre’s Peninsula, it was named aft ...

s and there are records from the

Swan Coastal Plain The Swan Coastal Plain in Western Australia is the geographic feature which contains the Swan River as it travels west to the Indian Ocean. The coastal plain continues well beyond the boundaries of the Swan River and its tributaries, as a geol ...

biogeographic region An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...

in Western Australia.

Conservation status

This species is classified as in Western Australia as " Priority Three" by the Government of Western Australia

Department of Parks and Wildlife The Department of Parks and Wildlife (DPaW) was the department of the Government of Western Australia responsible for managing lands described in the ''Conservation and Land Management Act 1984'' and implementing the state's conservation and e ...

meaning that it is poorly known and known from only a few locations but is not under imminent threat.

References

{{Taxonbar, from=Q17250444 bicarinata Taxa named by Stanley Thatcher Blake Plants described in 1969 Flora of South Australia Flora of Western Australia