''Darwinia citriodora'', commonly known as lemon-scented darwinia or lemon scented myrtle, is a plant in the myrtle family

Myrtaceae Myrtaceae, the myrtle family, is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, and eucalyptus are some notable members of this group. All speci ...

and is

endemic Endemism is the state of a species being found 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 found elsew ...

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 se ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

. It is a shrub with oblong to lance-shaped leaves and red, yellow and orange flowers over an extended period. It is a hardy plant in well-drained soil, is often cultivated and used as a

rootstock A rootstock is part of a plant, often an underground part, from which new above-ground growth can be produced. It could also be described as a stem with a well developed root system, to which a bud from another plant is grafted. It can refer to a ...

for less hardy species.

Description

''Darwinia citriodora'' is a compact shrub which grows to a height and width of . The leaves are arranged in opposite pairs along the stems, long, lance-shaped to oval with a blunt tip and with their edges rolled under. They are usually a rich green colour but often turn purplish during winter. The leaves have obvious oil

glands In animals, a gland is a group of cells in an animal's body that synthesizes substances (such as hormones) for release into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland). Structure De ...

on their lower surface and have a pleasant lemon scent when crushed. The flowers are arranged in groups of four near the ends of the branches, each group surrounded by reddish-green, leaf-like

bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...

s. Individual flowers are small, tube-shaped and yellow with the

petal Petals are modified Leaf, leaves that surround the reproductive parts of flowers. They are often advertising coloration, brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''c ...

s enclosing the stamens. The

style Style is a manner of doing or presenting things and may refer to: * Architectural style, the features that make a building or structure historically identifiable * Design, the process of creating something * Fashion, a prevailing mode of clothing ...

is about long, red to yellow and extends beyond the flower, with its brush-like tip curving towards the centre of the group of flowers. Flowering occurs between May and December.

Taxonomy

This species was first formally described in 1837 by Stefan Endlicher who gave it the name ''Genetyllis citriodora''. The description was published in ''

Enumeratio plantarum quas in Novae Hollandiæ ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel Accumulatio is a figure of speech, part of the more general group of ''enumeratio'', in which the statements made previously are presented again in a compact, forceful manner. It often uses a climax for the summation of a speech. The word is Lat ...

''. In 1865,

George Bentham George Bentham (22 September 1800 – 10 September 1884) was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century". Born into a distinguished family, he initially studi ...

changed the name to ''Darwinia citriodora'' and published the change in ''

Journal of the Linnean Society, Botany The ''Botanical Journal of the Linnean Society'' is a scientific journal publishing original papers relating to the taxonomy of all plant groups and fungi, including anatomy, biosystematics, cytology, ecology, ethnobotany, electron microscopy, mor ...

''. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''citriodora'') is derived from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

words ''citrea'' meaning "lemon" and ''odora'' meaning "smell" or "scent".

Distribution and habitat

Lemon-scented darwinia occurs in near-coastal areas between the Swan River and

Cape Riche Cape Riche is a cape and rural locality in the Great Southern region of Western Australia. By road, it is 525 km south-east of Perth and 123 km north-east of Albany Facilities in the locality include a boat launching ramp and a ca ...

in the

Esperance Plain Esperance Plains, also known as Eyre Botanical District, is a biogeographic region in southern Western Australia on the south coast between the Avon Wheatbelt and Hampton bioregions, and bordered to the north by the Mallee region. It is a pl ...

Jarrah Forest Jarrah forest is tall open forest in which the dominant overstory tree is ''Eucalyptus marginata'' (jarrah). The ecosystem occurs only in the Southwest Botanical Province of Western Australia. It is most common in the biogeographic region named in ...

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 A warren is a network of wild rodent or lagomorph, typically rabbit burrows. Domestic warrens are artificial, enclosed establishment of animal husbandry dedicated to the raising of rabbits for meat and fur. The term evolved from the medieval Angl ...

biogeographic regions where in grows in

lateritic Laterite is both a soil and a rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by ...

granitic A granitoid is a generic term for a diverse category of coarse-grained igneous rocks that consist predominantly of quartz, plagioclase, and alkali feldspar. Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quart ...

soils.

Use in horticulture

''Darwinia citriodora'' has been available in nurseries for many years and a variety with larger than normal flowers has been produced. It is easily propagated from cuttings which are best obtained at the end of summer or early autumn. It is valuable as a rootstock for other species, especially those from the

genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...

Verticordia :For the clam genus, see ''Verticordia'' (bivalve). ''Verticordia'' is a genus of more than 100 species of plants commonly known as featherflowers, in the myrtle family, Myrtaceae. They range in form from very small shrubs such as '' V. vertico ...

'', ''

Chamelaucium ''Chamelaucium'', also known as waxflower, is a genus of shrubs endemic to south western Western Australia. They belong to the myrtle family Myrtaceae and have flowers similar to those of the tea-trees (''Leptospermum''). The most well-known spe ...

'' and ''

Actinodium ''Actinodium cunninghamii'', commonly known as swamp daisy or Albany daisy, is the only formally described species in the genus of flowering plants in the family Myrtaceae, ''Actinodium'' and is endemic to Western Australia. Description ''Actin ...

'' as well as for other species of ''Darwinia''.

Conservation

''Darwinia citriodora'' is listed as "not threatened" by the Government of Western Australia

Department of Parks and Wildlife The Department of Parks and Wildlife (DPaW) was the department of the Government of Western Australia responsible for managing lands described in the ''Conservation and Land Management Act 1984'' and implementing the state's conservation and e ...

Gallery

Image:Darwinia citriodora-IMG 9345.JPG Image:Darwinia citriodora 1.jpg

References

{{Taxonbar, from=Q3016631 citriodora Endemic flora of Western Australia Endangered flora of Australia Rosids of Western Australia Myrtales of Australia Plants described in 1837 Taxa named by Stephan Endlicher