''Acacia resinimarginea'', also known as old-man wodjil, is a tree or shrub belonging to the genus ''
Acacia'' and the subgenus ''Juliflorae'' that 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 else ...
to western
Australia.
Description
The tree or shrub typically grows to a height of
[ with an erect habit and with straight trunks. It has ]glabrous
Glabrousness (from the Latin '' glaber'' meaning "bald", "hairless", "shaved", "smooth") 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 ...
and terete branchlets and resinous ribs when still immature. Like most species of ''Acacia,'' it has phyllodes rather than true leaves. The ascending to erect phyllodes have a linear shape and are quite straight and have a mostly rhombic cross-section with a length of and a width of . The glabrous phyllodes have a slightly recurved tapered point and resinous nerve at the apex of each of the four angles.[ It blooms from August to October producing yellow flowers.][ The simple ]inflorescence
An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...
s are found on stalks that are in length. The obloid to short-cylindrical flower-heads are in length and packed with golden flowers. The glabrous and chartaceous seed pod
This page provides a glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to classify and identify plant organs and parts that can be observed using no more than a handheld magnify ...
s that form after flowering have a straight shape and are constricted between and raised over each of the seeds and have a length of up to and a wisth of around . The mottled brown seeds inside are arranged longitudinally. The seeds have an elliptic-oblong shape with a length of with a crested apical aril.[
]
Distribution
Acacia resinimarginea is native to a large area in the Mid West
The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
and Wheatbelt region of 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 ...
where it is often situated on undulating plains growing mostly in sandy
See also
* List of ''Acacia'' species
References
{{Taxonbar, from=Q15288585
resinimarginea
Acacias of Western Australia
Taxa named by William Vincent Fitzgerald
Plants described in 1904