''Acacia amputata'' is a shrub of the genus '' Acacia'' and the subgenus ''Pulchellae'' 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 an area of south western Australia.

Description

The spreading spinose shrub typically grows to a height of with pink-brown branches and spiny branchlets that have short stiff hairs. The small leaves contain one pair of

pinnae The auricle or auricula is the visible part of the ear that is outside the head. It is also called the pinna (Latin for "wing" or " fin", plural pinnae), a term that is used more in zoology. Structure The diagram shows the shape and location ...

that are in length and two to four pairs of pinnules. The grey-green and

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 ...

pinnules have an oblong-obovate to obovate shape with a length of and a width of . It blooms from July to September and produces yellow flowers. The rudimentary

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 have spherical flower-heads containing 10 to 20 light golden coloured flowers. The thinly crustaceous and glabrous

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 following flowering are undulate to spirally coiled with a length od up to and a width of and contain mottled brown seeds with a broadly elliptic shape and a length of about .

Distribution

It is native to an area in the Wheatbelt and Great Southern regions 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 commonly situated on undulating plains growing in sandy of gravelly loamy soils. The range extends from Narrogin and Brookton in the west to around the Frank Hann National Park in the north east and Boxwood Hill in the south east and it is usually a part of open shrubland or tall open ''

Eucalyptus ''Eucalyptus'' () is a genus of over seven hundred species of flowering trees, shrubs or mallees in the myrtle family, Myrtaceae. Along with several other genera in the tribe Eucalypteae, including '' Corymbia'', they are commonly known as e ...

'' shrubland communities.

References

{{Taxonbar, from=Q15289531 amputata Acacias of Western Australia Plants described in 1999 Taxa named by Bruce Maslin

Description

Distribution

See also

References