Jacksonia stackhousei
{{Short description|Species of legume}}
{{use dmy dates|date=June 2024}}
{{Speciesbox
| name = Wallum dogwood
| image = Jacksonia stackhousei.jpg
| image_caption =
| status_system =
| status =
| genus = Jacksonia (plant)
| species = stackhousei
| authority = F.Muell.{{cite web |title=Jacksonia stackhousei |url=https://biodiversity.org.au/nsl/services/apc-format/display/109016|publisher=Australian Plant Census |access-date=4 March 2025}}
| synonyms =
- Jacksonia stackhousii F.Muell. orth. var.
- Piptomeris stackhousei (F.Muell.) Greene
}}
Jacksonia stackhousei, commonly known as wallum dogwood,{{cite web |title=Species profile—Jacksonia stackhousei (wallum dogwood) |url=https://apps.des.qld.gov.au/species-search/details/?id=15261 |publisher=Queensland Government Department of Education and Science |access-date=4 March 2025}} is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a tufted, low-lying shrub with greyish-green branches, the leaves reduced to dark brown, egg-shaped scales pressed against the surface, yellow flowers without markings, and oval pods.
Description
Jacksonia stackhousei is a tufted, low-lying shrub that typically grows up to {{cvt|0.2–2.5|m}} high and {{cvt|0.5–2|m}} wide. Its leaves are reduced to egg-shaped, dark brown scales, {{cvt|0.5–1.7|mm}} long and {{cvt|0.6–1.2|mm}} wide with toothed edges. The flowers are scattered along the branchlets or on the ends of branchlets on pedicels {{cvt|0.9–3.3|mm}} long, with egg-shaped bracteoles {{cvt|1.2–1.7|mm}} long and {{cvt|0.8–1|mm}} wide on the upper pedicels. The floral tube is {{cvt|0.6–1.1|mm}} long and not ribbed, and the sepals are membranous, with the upper lobes {{cvt|2–5.5|mm}} long, {{cvt|2.9–3.4|mm}} wide, the lower lobes {{cvt|5.8–6.0|mm}} long and {{cvt|1.1–1.4|mm}} wide and fused for {{cvt|0.6–1.1|mm}}. The flowers are yellow, without markings, the standard petal {{cvt|4.2–4.5|mm}} long and {{cvt|6.8–7.6|mm}} deep, the wings {{cvt|5.5–5.6|mm}} long, and the keel {{cvt|4.5–4.7|mm}} long. The stamens have red filaments, {{cvt|2.5–5.3|mm}} long. Flowering occurs from May to November, and the fruit is a sessile, oval pod up to {{cvt|5|mm}} long and hidden in the remains of the sepals.{{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=539, 541–542}}{{cite web |last1=Wiecek |first1=Barbara |title=Jacksonia stackhousei |url=https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Jacksonia~stackhousei |publisher=Royal Botanic Garden, Sydney |access-date=5 March 2025}}
Taxonomy
Jacksonia stackhousei was first formally described in 1876 by Ferdinand von Mueller in the Proceedings of the Linnean Society of New South Wales from specimens collected near the entrance to the Clarence River by [https://www.anbg.gov.au/biography/stackhouse-thomas.html Captain T. Stackhouse].{{cite web |title=Jacksonia stackhousei |url=https://biodiversity.org.au/nsl/services/rest/instance/apni/540176 |publisher=Australian Plant Name Index |access-date=4 March 2025}}{{cite journal |last1=von Mueller |first1=Ferdinand |title=Two new species of plants from New South Wales. |journal=Proceedings of the Linnean Society of New South Wales |date=1881 |volume=6 |issue=4 |pages=791–792 |url=https://www.biodiversitylibrary.org/item/22895#page/811/mode/1up |access-date=5 March 2025}}
Distribution and habitat
Wallum dogwood grows in coastal heath and woodland on white sand over sandstone from Shoalwater Bay in south-eastern Queensland to near Wooli in northern New South Wales.
Conservation status
Jacksonia stackhousei is listed as of "least concern" under the Queensland Government Nature Conservation Act 1992.
References
{{Reflist}}
{{Taxonbar|from=Q15526843}}
Category:Flora of New South Wales