''Daviesia incrassata'' is a species of flowering plant in the family
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 of Western Australia. It is an erect, mounded to spreading shrub with more or less zigzag branchlets, scattered needle-shaped
phyllode
Phyllodes are modified 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 comes to serve the ...
s and orange, deep red and pink flowers.
Description
''Daviesia incrassata'' is an erect, mounded to spreading,
glabrous shrub that typically grows to a height of up to , and has more or less zigzag branchlets. Its phyllodes are scattered, needle-shaped or triangular in cross-section and long. The flowers are arranged in groups of two to four in leaf axils, 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 with oblong
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 long at the base, the
rachis 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 The term ''sepalum'' was coined b ...
s are long and joined at the base, the upper two lobes joined for most of their length and the lower three long. The
standard petal is elliptic to egg-shaped, long and orange with a reddish-brown base, the
wings long and deep pink, and the
keel
The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in Br ...
long and pink with a blackish tip. Flowering occurs from June to November and the fruit is an inflated triangular
pod
Pod or POD may refer to:
Biology
* Pod (fruit), a type of fruit of a flowering plant
* Husk or pod of a legume
* Pod of whales or other marine mammals
* "-pod", a suffix meaning "foot" used in taxonomy
Electronics and computing
* Proper ort ...
long.
Taxonomy and naming
''Daviesia incrassata'' was first formally described in 1808 by
James Edward Smith James Edward Smith may refer to:
* James Edward Smith (botanist), English botanist and founder of the Linnean Society
* James Edward Smith (murderer), American murderer
* James Edward Smith (politician), Canadian businessman and mayor of Toronto
* ...
in ''
The Cyclopaedia'' from specimens collected at
King George Sound by
Archibald Menzies.
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 ...
(''incrassata'') means "flattened", referring to the phyllodes.
In 1995,
Michael Crisp described three subspecies in ''
Australian Systematic Botany'' and the names are accepted by the
Australian Plant Census The Australian Plant Census (APC) provides an online interface to currently accepted, published, scientific names of the vascular flora of Australia, as one of the output interfaces of the national government Integrated Biodiversity Information Syst ...
:
* ''Daviesia incrassata''
Sm. subsp. ''incrassata'';
* ''Daviesia incrassata'' subsp. ''reversifolia''
Crisp is distinguished from the
autonym by its tangled habit, zigzag branchlets and spreading to strongly down-turned phyllodes;
* ''Daviesia incrassata'' subsp. ''teres''
Crisp differs from the autonym and subsp. ''reversifolia'' by its needle-shaped branchlets and phyllodes that do not turn downwards.
Distribution and habitat
This daviesia is widespread in the south-west of Western Australia, from near
Dongara in the north-west to the
Cape Arid National Park
Cape Arid National Park is a List of national parks of Australia, national park located in Western Australia, southeast of Perth. The park is situated east of Esperance, Western Australia, Esperance and lies on the shore of the South coast of W ...
in the south-east. Subspecies ''incrassata'' grows in heath, woodland and forest, in sandy or swampy places, subsp. ''reversifolia'' in heath in near-coastal areas between
Bremer Bay Bremer may refer to:
People
*Bremer (surname)
*Bremer Ehrler (born 1914), American politician
* Bremer (born 1997), Brazilian footballer
Places
;Australia
*Bremer Bay, Western Australia
*Bremer Marine Park
*Bremer Island
* Bremer River (disambigua ...
and
Esperance and subsp. ''teres'' in heath or near saltpans between
Mullewa,
Morawa,
Mogumber Lake Grace
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger ...
and
Kulin Kulin may refer to:
Places
*Kulin, Western Australia, a small town in Australia
** Shire of Kulin, a local government area
*Kulin, Iran, a village near Tehran
*Kulin, Lower Silesian Voivodeship, a village in south-west Poland
*Kulin, Kuyavian-Pome ...
.
Conservation status
All three subspecies of ''D. incrassata'' are listed as "not threatened" by the Government of Western Australia
Department of Biodiversity, Conservation and Attractions
The Department of Biodiversity, Conservation and Attractions (DBCA) is the Western Australian government
The Government of Western Australia, formally referred to as His Majesty's Government of Western Australia, is the Australian state de ...
.
References
{{Taxonbar, from1=Q15532135, from2=Q50920890, from3=Q100451102, from4=Q51055018
incrassata
Eudicots of Western Australia
Plants described in 1808
Taxa named by James Edward Smith