''Swainsona behriana'', commonly known as Behr's swainsona, 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 continental Australia. It is a prostrate or low-growing

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

herb Herbs are a widely distributed and widespread group of plants, excluding vegetables, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal purposes, or for fragrances. Culinary use typically distingu ...

with

imparipinnate Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and in ...

leaves usually with 9 to 13 narrowly elliptic to egg-shaped leaflets with the narrower end towards the base, and

raceme A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...

s of 2 to 7 purple flowers.

Description

''Swainsona behriana'' is a prostrate or low-lying perennial herb, that typically grows to a height of up to with many slender stems arising from its base. Its leaves are imparipinnate, long 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 at the base. There are 9 to 13 narrowly elliptic to egg-shaped leaflets with the narrower end towards the base, mostly and wide. The flowers are arranged in racemes long of 2 to 7 on a peduncle up to in diameter, each flower 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 softly-hairy and joined at the base, forming a tube long, the sepal lobes about the same length as the tube. The petals are purple, 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 long and wide, 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 ...

long, 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 ...

mostly long. Flowering occurs from August to January, and the fruit is an oblong pod long and wide with the remains of the

style Style, or styles may refer to: Film and television * ''Style'' (2001 film), a Hindi film starring Sharman Joshi, Riya Sen, Sahil Khan and Shilpi Mudgal * ''Style'' (2002 film), a Tamil drama film * ''Style'' (2004 film), a Burmese film * '' ...

long.

Taxonomy and naming

''Swainsona behriana'' was first formally described in 1927 by

John McConnell Black John McConnell Black (28 April 1855 – 2 December 1951) was a Scottish botanist who emigrated to Australia in 1877 and eventually documented and illustrated thousands of flora in South Australia in the early 20th century. His publications ass ...

in '' Transactions and proceedings of the Royal Society of South Australia'', from an unpublished description by

Ferdinand von Mueller Baron Sir Ferdinand Jacob Heinrich von Mueller, (; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Victoria, Australia ...

. According to Black, 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 ...

(''behriana'') "was doubtless named after Dr. Behr, a physician and botanist then practising at

Gawler Gawler, established in 1839, is the oldest country town in the state of South Australia. It was named after the second Governor (British Vice-Regal representative) of the colony of South Australia, George Gawler. It is about north of the st ...

Distribution and habitat

Behr's swainsona grows in grassland, grassy woodland and forest clearings and occurs on the slopes and tablelands of New South Wales, in scattered locations mostly in the lowlands west of

Melbourne Melbourne ( , ; Boonwurrung language, Boonwurrung/ or ) is the List of Australian capital cities, capital and List of cities in Australia by population, most populous city of the States and territories of Australia, Australian state of Victori ...

in Victoria, but also in montane areas further east, and in southern districts of South Australia.

Conservation status

''Swainsona behriana'' is listed as "endangered" under the Victorian Government ''

Flora and Fauna Guarantee Act 1988 The ''Flora and Fauna Guarantee Act 1988'', also known as the ''FFG Act'', is an act of the Victorian Parliament designed to protect species, genetic material and habitats, to prevent extinction and allow maximum genetic diversity within the Au ...

''.

References

{{Taxonbar, from=Q7653033 behriana Fabales of Australia Flora of New South Wales Flora of South Australia Flora of Victoria (state) Taxa named by John McConnell Black Plants described in 1927