Jacksonia sericea

Jacksonia sericea is a spreading to prostrate shrub that typically grows up to {{cvt|0.3–1|m}} high and {{cvt|1–2|m}} wide. It has greyish-green branches, the end branches {{cvt|2.2–25|mm}} long, {{cvt|0.3–0.8|mm}} wide and mostly sharply-pointed. Its leaves are reduced to narrowly egg-shaped, pale brown scales with toothed edges, {{cvt|0.9–1.8|mm}} long and {{cvt|0.4–1.1|mm}} wide. The flowers are scattered along the branches on a pedicel {{cvt|1.7–2.8|mm}} long, with narrowly egg-shaped bracteoles {{cvt|0.7–1.4|mm}} long on the middle or near the top of the pedicels. The floral tube is {{cvt|1.2–1.6|mm}} long and the sepals are membranous, with lobes {{cvt|7.5–8.8|mm}} long and {{cvt|0.9–1.7|mm}} wide. The standard petal is orange with red markings, {{cvt|4.9–7|mm}} long, the wings are orange without markings, {{cvt|5.2–7.6|mm}} long, and the keel is orange or red, {{cvt|5.5–5.9|mm}} long. The stamens have white filaments with pink ends and {{cvt|5.1–5.8|mm}} long. Flowering occurs from October to January, and the fruit is a woody, densely hairy pod {{cvt|5.5–5.7|mm}} long and {{cvt|4–5|mm}} wide.{{cite journal |last1=Chappill |first1=Jennifer A. |last2=Wilkins |first2=Carolyn F. |last3=Crisp |first3=Michael D. |title=Taxonomic revision of Jacksonia (Leguminosae: Mirbelieae). |journal=Australian Systematic Botany |date=2007 |volume=20 |issue=6 |pages=616–618 }}

Jacksonia sericea was first formally described in 1837 by George Bentham in Stephan Endlicher's Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel.{{cite web |title=Jacksonia sericea |url=https://biodiversity.org.au/nsl/services/rest/instance/apni/540062 |publisher=Australian Plant Name Index |access-date=27 July 2024}}{{cite book |last1=Bentham |first1=George |editor-last1=Endlicher |editor-first1=Stefan F.L. |editor-last2=Fenzl |editor-first2=Eduard |editor-last3=Bentham |editor-first3=George |editor-last4=Schott |editor-first4=Heinrich W. |title=Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hüge |date=1837 |page=31 |url=https://babel.hathitrust.org/cgi/pt?id=chi.64405481&view=1up&seq=41 |access-date=19 October 2021}} from specimens collected near King George Sound. The specific epithet (sericea) means 'silky'.{{cite book |last1=George |first1=Alex |last2=Sharr |first2=Francis |title=Western Australian Plant Names and Their Meanings |date=2021 |publisher=Four Gables Press |location=Kardinya, WA |isbn=9780958034180 |page=305 |edition=4th}}

This species of Jacksonia grows in sandy soil over limestone, and is found in Perth suburbs between Wanneroo and Mandurah in the Swan Coastal Plain bioregion of south-western Western Australia.

Waldjumi is listed as "Priority Four" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, meaning that it is rare or near threatened.{{cite web|title=Conservation codes for Western Australian Flora and Fauna|url=https://www.epa.wa.gov.au/sites/default/files/Referral_Documentation/DWERDT480152%20%20App%206%20-%202020%20Western%20Australian%20and%20Commonwealth%20of%20Australia%20Conservation%20Codes%282%29.pdf|publisher=Government of Western Australia Biodiversity, Conservation and Attractions|accessdate=29 July 2024}}

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Category:Fabales of Australia

Category:Rosids of Western Australia

sericea

Category:Taxa named by George Bentham

Category:Plants described in 1837