''Lysiosepalum hexandrum'' is a species of flowering plant in the family

Malvaceae Malvaceae (), or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. Well-known members of economic importance include Theobroma cacao, cacao, Cola (plant), cola, cotton, okra, Hibiscus sabdariffa, ...

and is

endemic Endemism is the state of a species being found only 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 foun ...

to the

south-west The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A ''compass rose'' is primarily composed of four cardinal directions—north, east, south, and west—each ...

of Western Australia. It is dense, erect shrub with its young branches covered with woolly, star-shaped hairs, and has linear or narrowly elliptic leaves and blue, purple or pink flowers usually in groups of five.

Description

''Lysiosepalum hexandrum'' is a dense, erect shrub that typically grows to high and wide, its young branches covered with woolly, star-shaped hairs and scattered red, club-shaped

glandular A gland is a cell or an organ in an animal's body that produces and secretes different substances that the organism needs, either into the bloodstream or into a body cavity or outer surface. A gland may also function to remove unwanted substance ...

hairs. The leaves are linear to narrowly elliptic, long and wide on a

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

long, usually with

stipule In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole (botany), petiole). They are primarily found among dicots and rare among monocots. Stipules are considered part ...

s long and wide at the base. The flowers are blue, purple or pink, usually borne in groups of five on a peduncle long with spoon-shaped

bract In botany, a bract is a modified or specialized leaf, associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves in size, color, shape or texture. They also lo ...

s long at the base, each flower on a

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

long with egg-shaped bracts long and wide at the base of 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 Etymology The term ''sepalum'' ...

s. The five sepal lobes are narrowly elliptic or narrowly egg-shaped, long and wide, and there are no petals. Flowering occurs from August to November.

Taxonomy

This species was first formally described in 1921 by

Spencer Le Marchant Moore Spencer Le Marchant Moore (1 November 1850 – 14 March 1931) was an English botanist. Biography Moore was born in Hampstead. He worked at the Royal Botanic Gardens, Kew, from about 1870 to 1879, wrote a number of botanical papers, and then wor ...

who gave it the name ''Thomasia hexandra'' in the ''

Journal of Botany, British and Foreign ''Journal of Botany, British and Foreign'' is a monthly journal that was published from 1863 to 1942, and founded by Berthold Carl Seemann who was the editor until his death in 1871. It was initially published by Robert Hardwicke. Seemann himse ...

'' from specimens collected near

Beverley Beverley is a market town and civil parish in the East Riding of Yorkshire, England. It is located north-west of Hull city centre. At the 2021 census the built-up area of the town had a population of 30,930, and the smaller civil parish had ...

by Oswald Hewlett Sargent. In 1923, Moore transferred the species to the genus ''Lysiosepalum'' as ''L. hexandrum'' in a later edition of the same journal. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

(''hexandrum'') means "six stamens".

Distribution and habitat

This species of lysiosepalum grows in the understorey of open woodland or heath between

Wongan Hills Wongan Hills is a range of low flat-topped hills in the Avon Wheatbelt bioregion of Western Australia. It is located at , in the Shire of Wongan–Ballidu. History The range was first recorded in 1836 by Surveyor General of Western Australia Jo ...

and

Nyabing Nyabing is a small town and locality in the Great Southern region of Western Australia. The name is of Aboriginal origin and is thought to derive from the Aboriginal word "ne-yameng", which is the name of an everlasting flower '' Rhodanthe ma ...

in the

Avon Wheatbelt The Avon Wheatbelt is a bioregion in Western Australia. It has an area of . It is considered part of the larger Southwest Australia savanna ecoregion. Geography The Avon Wheatbelt bioregion is mostly a gently undulating landscape with low rel ...

and Mallee

bioregion A bioregion is a geographical area, on land or at sea, defined not by administrative boundaries, but by distinct characteristics such as plant and animal species, ecological systems, soils and landforms, Human settlement, human settlements, and ...

s in the south-west of Western Australia.

Conservation status

''Lysiosepalum aromaticum'' is listed as "not threatened" by the Western Australian Government

Department of Biodiversity, Conservation and Attractions The Department of Biodiversity, Conservation and Attractions (DBCA) is the Government of Western Australia, Western Australian government department responsible for managing lands and waters described in the ''Conservation and Land Management A ...

References

{{Taxonbar, from=Q51046834 hexandrum Rosids of Western Australia Malvales of Australia Taxa named by Spencer Le Marchant Moore Plants described in 1921