Stenanthemum emarginatum
{{Short description|Species of flowering plant}}
{{Use dmy dates|date=October 2020}}
{{Speciesbox
|image = Stenanthemum emarginatum (15248678859).jpg
|genus = Stenanthemum
|species = emarginatum
|status_system =
|status =
|authority = (Benth.) Rye{{cite web |title=Stenanthemum emarginatum |url=https://biodiversity.org.au/nsl/services/apc-format/display/159909 |publisher=Australian Plant Census |access-date=27 December 2022}}
}}
Stenanthemum emarginatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a spreading to prostrate shrub with sparsely hairy young stems, narrowly fan-shaped to linear leaves and densely, shaggy-hairy heads of white or cream-coloured flowers.
Description
Stenanthemum emarginatum is a spreading to prostrate shrub that typically grows to a height of {{cvt|5–10|cm}}, its young stems sparsely hairy. Its leaves are narrowly fan-shaped to linear, {{cvt|4.5–11|mm}} long and mostly {{cvt|1.5–3.5|mm}} wide on a petiole {{cvt|0.5–1.5|mm}} long, with triangular stipules {{cvt|1.0–1.5|mm}} long and joined together at the base. The upper surface of the leaves is glabrous and the lower surface is covered with shaggy, silvery hairs. The flowers are sparsely to densely covered with shaggy, greyish hairs. The floral tube is {{cvt|0.3–0.5|mm}} long and {{cvt|0.5–0.7|mm}} wide, the sepals {{cvt|0.6–1|mm}} long and the petals {{cvt|0.5–0.6|mm}} long. Flowering occurs in November and December, and the fruit is {{cvt|1.8–2.2|mm}} long.{{cite journal |last1=Rye |first1=Barbara L. |title=New and priority taxa in the genera Cryptandra and Stenanthemum (Rhamnaceae) of Western Australia. |journal=Nuytsia |date=1995 |volume=10 |issue=2 |pages=286–287 |url=https://www.biodiversitylibrary.org/item/225398#page/150/mode/1up |access-date=27 December 2022}}{{cite web |title=Stenanthemum emarginatum |last1=Kellerman |first1=Jurgen|last2=Thiele |first2=Kevin R.|editor-last1=Kodela |editor-first1=Phillip G. | url=https://profiles.ala.org.au/opus/foa/profile/Stenanthemum%20emarginatum |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date= 27 December 2022}}
Taxonomy and naming
Stenanthemum emarginatum was first formally described in 1995 by Barbara Lynette Rye in the journal Nuytsia from specimens collected by Alex George near Ravensthorpe in 1960.{{cite web|title=Stenanthemum emarginatum|url= https://id.biodiversity.org.au/instance/apni/568444|publisher=APNI|accessdate=27 December 2022}} The specific epithet (emarginatum) means "notched", referring to the leaves.
Distribution and habitat
This species grows in shrubland and mallee-heath between Gingin and Hopetoun in the Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia.{{FloraBase|id=16197|name=Stenanthemum emarginatum}}
Conservation status
Stenanthemum emarginatum is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.
References
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Category:Flora of Western Australia