''Daviesia latifolia'', commonly known as hop bitter-pea, 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 slender, erect, spreading shrub with elliptic, egg-shaped or lance-shaped

phyllode Phyllodes are modified petiole (botany), petioles or leaf stems, which are leaf-like in appearance and function. In some plants, these become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode co ...

s and orange-yellow and maroon flowers in long

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 ...

Description

''Daviesia latifolia'' is a slender, erect shrub that typically grows to high and wide and has arching,

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. Adult phyllodes are elliptic to egg-shaped or lance-shaped, 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 ...

-like base long. The phyllodes are wavy with scalloped edges and have prominent veins. Juvenile phyllodes are slightly broader. The flowers are borne in leaf axils along up to three racemes, the peduncle long, the

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

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 long and joined at the base, the upper two joined for most of their length and the lower three triangular and long. 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 broadly egg-shaped, long and orange-yellow and maroon with a yellow centre, 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 yellow and maroon, 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 ...

long and maroon. Flowering occurs from September to December and the fruit is triangular pod long.

Taxonomy

''Daviesia latifolia'' was first formally described in 1811 by

Robert Brown Robert Brown may refer to: Robert Brown (born 1965), British Director, Animator and author Entertainers and artists * Washboard Sam or Robert Brown (1910–1966), American musician and singer * Robert W. Brown (1917–2009), American printmaker ...

in Aiton's ''

Hortus Kewensis (Latin for 'Kew Garden'; abbr. ) is a series of works cataloguing the plant species in cultivation at the Royal Botanic Gardens at Kew in the late 18th and early 19th centuries. Background Kew became a favored location for English courtiers ...

''. 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 ...

(''latifolia'') means "broad-leaved".

Distribution and habitat

Hop bitter-pea grows in forest, often as an understorey plant and occurs at altitudes up to , from the

Granite Belt The Granite Belt is an area of the Great Dividing Range in the Darling Downs region of Queensland and the New England region of New South Wales, Australia. The Granite Belt is centred on the town of Stanthorpe. The cool, high country of the gr ...

of south-eastern Queensland, through the tablelands, western slopes and south coast of New South Wales, to most of Victoria apart, from the north west of the state. It is also common in dry woodlands in Tasmania.

Ecology

This daviesia provides nectar for a range of insects and native birds.

Uses

Use in horticulture

The species is useful as an ornamental, as a windbreak and in nitrogen-fixing. It prefers well-drained soil in full sun and is frost tolerant.

Other uses

The stems and phyllodes can be used with

alum An alum () is a type of chemical compound, usually a hydrated double salt, double sulfate salt (chemistry), salt of aluminium with the general chemical formula, formula , such that is a valence (chemistry), monovalent cation such as potassium ...

to produce a fawn dye used as a

mordant A mordant or dye fixative is a substance used to set (i.e., bind) dyes on fabrics. It does this by forming a coordination complex with the dye, which then attaches to the fabric (or tissue). It may be used for dyeing fabrics or for intensifying ...

. The phyllodes also have reputed medicinal properties, and were also substituted as

hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whic ...

to flavour beer. Early European settlers used the leaves as a drug to expel intestinal worms, including hydatid cysts, and also as tonic.

References

{{Taxonbar, from=Q5241752 latifolia Flora of New South Wales Flora of Queensland Flora of Tasmania Flora of Victoria (state) Plants described in 1811 Taxa named by Robert Brown (botanist, born 1773)