Acacia conjunctifolia

Acacia conjunctifolia
Drawing by Robert Graff
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. conjunctifolia
Binomial name
Acacia conjunctifolia
Occurrence data from AVH
Synonyms[1]

Racosperma conjunctifolium (F.Muell.) Pedley

Acacia conjunctifolia is a species of flowering plant in the family Fabaceae and is endemic to northern Australia. It is a glabrous, sticky shrub with phyllodes sometimes arranged in clusters, spikes of pale yellow flowers and erect, straight to slightly curved linear to narrowly lance-shaped pods.

Description

Acacia conjunctifolia is a glabrous, sticky shrub that typically grows to a height of up to 2 m (6 ft 7 in), its branchlets with prominent ridges and angular to almost flattened tips. The phyllodes occur singly or in clusters of up to four, and are narrowly elliptic to narrowly lance-shaped with the narrower end towards the base, 8–21 mm (0.31–0.83 in) long, 1–3.5 mm (0.039–0.138 in) wide and straight to slightly curved with a prominent midvein and up to three glands on the edges. The flowers are borne in spikes 7–30 mm (0.28–1.18 in) long and are pale yellow. Flowering occurs between May and September and the pods are erect, narrowly lance-shaped to more or less linear, straight to slightly curved, 30–70 mm (1.2–2.8 in) long, 3.5–7 mm (0.14–0.28 in) wide and often winged. The seeds are dark brown seeds, oblong to narrowly oblong and 3–6 mm (0.12–0.24 in) long with a narrowly conical aril.[2][3][4]

Taxonomy

Acacia conjunctifolia was first formally described 1n 1879 by Ferdinand von Mueller in his Fragmenta Phytographiae Australiae from specimens collected near the Victoria River by Benjamin Gulliver.[5][6] The specific epithet (conjunctifolia) means 'connected-leaved', referring to the often-connected phyllodes.[7]

Distribution and habitat

This species of wattle is found through the top end of the Northern Territory[8] and a small part of north western Queensland where it grows in stony and sandy soils usually on laterite or quartzite in Eucalypt woodlands or scrubby open forest communities.[2][3] It is also found in Western Australia where it is found in the Northern Kimberley and Victoria Bonaparte bioregions on sandstone outcrops above creek beds.[9]

Conservation status

Acacia conjunctifolia is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[9] and as of "least concern" under the Territory Parks and Wildlife Conservation Act and Queensland Government Nature Conservation Act 1992.[10]

See also

References

  1. ^ a b "Acacia conjunctifolia". Australian Plant Census. Retrieved 18 July 2025.
  2. ^ a b Tindale, Mary D.; Kodela, Phillip G. Maslin, Bruce R.; Rogers, J. (eds.). "Acacia conjunctifolia". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 19 July 2025.
  3. ^ a b "Acacia conjunctifolia". World Wide Wattle. Western Australian Herbarium. Retrieved 8 September 2018.
  4. ^ "Acacia conjunctifolia". Wattle - Acacias of Australia. Lucid Central. Retrieved 18 July 2025.
  5. ^ "Acacia conjunctifolia". APNI. Retrieved 18 July 2025.
  6. ^ Dowe, John Leslie; Short, Philip Sydney (2024). "The Gullivers' travels: Thomas Allen Gulliver (1848–1931), Benjamin John Gulliver (1851–1938) and Susannah Gulliver (1857–1938): their contribution to Australian natural history and horticulture" (PDF). Swainsona. 38: 45–72. Retrieved 19 July 2025.
  7. ^ George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 171. ISBN 9780958034180.
  8. ^ "Acacia conjunctifolia". Northern Territory Government. Retrieved 19 July 2025.
  9. ^ a b "Acacia conjunctifolia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  10. ^ "Taxon - Acacia conjunctifolia". Queensland Government WildNew. Retrieved 19 July 2025.
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