''Bossiaea heterophylla'', commonly known as variable bossiaea, is a species of flowering plant in the family

Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ...

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 south-eastern Australia. It is a variable shrub with flattened stems, egg-shaped to linear leaves, and yellow and dark red flowers.

Description

''Bossiaea heterophylla'' is a shrub that typically grows to a height of up to about and has flattened,

glaucous ''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), ...

, more or less

glabrous Glabrousness () 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 a plant or animal, or be due to loss because of a physical condition, ...

branches wide. The leaves are arranged in two rows along the stems, variably-shaped, linear to broadly egg-shaped, long and wide with triangular

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 up to long at the base. The flowers are long and arranged singly along the branches, 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 ...

up to long with a few

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 up to long. 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 are long with bracteoles up to long on the pedicel. The

standard Standard may refer to: Symbols * Colours, standards and guidons, kinds of military signs * Standard (emblem), a type of a large symbol or emblem used for identification Norms, conventions or requirements * Standard (metrology), an object ...

petal is yellow-orange with a red back and up to long, the

wings A wing is a type of fin that produces both lift and drag while moving through air. Wings are defined by two shape characteristics, an airfoil section and a planform. Wing efficiency is expressed as lift-to-drag ratio, which compares the bene ...

wide and yellow sometimes flushed with pink and the

keel The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often ...

is wide and dark red. Flowering occurs from April to June and the fruit is a flat pod long.

Taxonomy

''Bossiaea heterophylla'' was first formally described in 1800 by

Étienne Pierre Ventenat Étienne Pierre Ventenat (1 March 1757 – 13 August 1808) was a French botanist born in Limoges. He was the brother of naturalist Louis Ventenat (1765–1794). While employed as director of the ecclesiastic library Sainte-Geneviève in Paris, ...

in his book, ''Description des Plantes Nouvelles et peu connues, cultivées dans le Jardin de J.M. Cels'', from specimens grown by Jacques Philippe Martin Cels, in turn grown from material collected from

Botany Bay Botany Bay (Dharawal language, Dharawal: ''Kamay'') is an open oceanic embayment, located in Sydney, New South Wales, Australia, south of the Sydney central business district. Its source is the confluence of the Georges River at Taren Point a ...

in 1792. 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 ...

(''heterophylla'') means "unequal-leaved".

Distribution and habitat

Variable bossiaea grows in a variety of habitats, usually in sandy soils and occurs on the coast and nearby tablelands south from

Bundaberg Bundaberg () is the major regional city in the Wide Bay-Burnett region of the state of Queensland, Australia. It is the List of cities in Australia by population, ninth largest city in the state. The Bundaberg central business district is situa ...

in Queensland, through New South Wales to Victoria as far west as Rosedale. It also occurs in two small populations in northern Tasmania.

Conservation status

This bossiaea is listed as "endangered" in Tasmania under the Tasmanian Government ''

Threatened Species Protection Act 1995 The ''Threatened Species Protection Act 1995'' (TSP Act), is an act of the Parliament of Tasmania that provides the statute relating to conservation of flora and fauna. Its long title is An Act to provide for the protection and management of ...

''.

References

{{Taxonbar, from=Q4947582 heterophylla Flora of New South Wales Flora of Queensland Flora of Victoria (state) Flora of Tasmania Taxa named by Étienne Pierre Ventenat Plants described in 1800