Billardiera fusiformis - Flickr - Kevin Thiele

''Billardiera fusiformis'', commonly known as Australian bluebell, is a species of flowering plant in the family

Pittosporaceae Pittosporaceae is a family of flowering plants that consists of 200–240 species of trees, shrubs, and lianas in 9 genera. Habitats range from tropical to temperate climates of the Afrotropical, Indomalayan, Oceanian, and Australasian r ...

and is endemic 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 a sturdy, shrubby climber that has linear to narrowly elliptic leaves and blue, white or pink, nodding flowers arranged singly or in groups of up to four.

Description

''Billardiera fusiformis'' is a sturdy, shrubby climber, its new stems greenish and shaggy hairy, later reddish-brown. Its adult leaves are linear to narrowly elliptic, long, wide and

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 ...

. Both surfaces of the leaves are softly-hairy, but become

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, ...

with age. The flowers are arranged singly or in groups of up to four on a

rachis In biology, a rachis (from the [], "backbone, spine") is a main axis or "shaft". In zoology and microbiology In vertebrates, ''rachis'' can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the ''rachi ...

long, each flower on a nodding

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. 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 silky hairy, long and fall off as the flower develops. The petals are blue, white or pink, long, about wide and free from each other. Flowering occurs in late spring and summer, and the mature fruit is a green, spindle-shaped

berry A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit although many pips or seeds may be present. Common examples of berries in the cul ...

long that turns purplish as it ages. ''Billardiera fusiformis'' can be distinguished from others in the genus by its narrowly elliptic, almost sessile leaves, its deep blue, white or pink petals that are free from each other and the

anthers The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filamen ...

that are nearly twice as long as their filaments and are fused to each other at first, later free.

Taxonomy

''Billardiera fusiformis'' was first described in 1805 by

Jacques Labillardière Jacques-Julien Houtou de Labillardière (28 October 1755 – 8 January 1834) was a French biologist noted for his descriptions of the flora of Australia. Labillardière was a member of a voyage in search of the Jean-François de Galaup, comte ...

in his ''

Novae Hollandiae Plantarum Specimen ''Novae Hollandiae Plantarum Specimen'' is a two-volume work describing the flora of Australia. Facsimiles of the originals can be found in the onlinBiodiversity Heritage Library (Vol.1)anVol 2) The author was the French botanist Jacques Labillar ...

'' from specimens collected in "

Van Diemen's Land Van Diemen's Land was the colonial name of the island of Tasmania during the European exploration of Australia, European exploration and colonisation of Australia in the 19th century. The Aboriginal Tasmanians, Aboriginal-inhabited island wa ...

". Labillardière's

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

specimen has not been found, but his type location is a mistake and the

lectotype In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to anchor or centralizes ...

has been designated as the illustration in ''Novae Hollandiae Plantarum Specimen''. 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 ...

(''fusiformis'') means shaped like a spindle, that is, swollen in the middle and tapering at each end, and refers to the shape of the fruits.

Distribution and habitat

Australian bluebell was originally endemic to the south-west of Western Australia where it grew in coastal and mallee heath 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 ...

, Coolgardie,

Esperance Plains Esperance Plains, also known as Eyre Botanical District, is a biogeography, biogeographic region in southern Western Australia on the South_coast_of_Western_Australia , south coast between the Avon Wheatbelt and Hampton bioregions, and bordere ...

Jarrah Forest Jarrah Forest, also known as the Southwest Australia woodlands, is an interim Australian bioregion and ecoregion located in the south west of Western Australia.

, Mallee,

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 ...

and

Warren Warren most commonly refers to: * Warren (burrow), a network dug by rabbits * Warren (name), a given name and a surname, including lists of persons so named Warren may also refer to: Places Australia * Warren (biogeographic region) * War ...

bioregions. Horticultural use in other states, especially of the white and pink forms of the species, has allowed the species to be naturalised in other states, but the species does not appear to be as weedy as the similar '' B. heterophylla''.

Weed status

The species has been cultivated as a garden plant, and has now become a significant weed in

Victoria Victoria most commonly refers to: * Queen Victoria (1819–1901), Queen of the United Kingdom and Empress of India * Victoria (state), a state of Australia * Victoria, British Columbia, Canada, a provincial capital * Victoria, Seychelles, the capi ...

South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. With a total land area of , it is the fourth-largest of Australia's states and territories by area, which in ...

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...

and the ACT. It invades woodlands, forests, shrublands, and grasslands, smothering ground flora and small shrubs, with large numbers of seedlings emerging in already infested areas, following fires. The seed is also spread by small native mammals ( potoroos, quokkas, bush rats) eating the fruits, with the seed becoming more viable after ingestion.

References

External links

* Bennett, E.M. 1972. * Bennett, E.M. 1978. {{Taxonbar, from=Q15589326 fusiformis Plants described in 1805 Taxa named by Jacques Labillardière Endemic flora of Southwest Australia