Acacia undoolyana

Acacia undoolyana ( common names Sickle-leaf wattle, Undoolya wattle)[1] is a species of wattle native to central Australia.[3]

Acacia undoolyana
VU (TPWCA)[1][2]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Clade: Mimosoideae
Genus: Acacia
Species:
A. undoolyana
Binomial name
Acacia undoolyana
G.J.Leach[3][4]
Occurrence data from AVH

Description

Acacia undoolyana is a shrub or small tree growing up to 15 m high and has persistent fissured bark. Both stems and phyllodes have a covering of minute flattened hairs, when young. The phyllodes are flat, linear to narrowly elliptic, and silvery when young but later a grey-green. They are sickle-shaped, are 120–220 mm long by 5–15 mm wide, and have a marginal basal gland and a prominent apical gland. They have multiple parallel nerves of which up to three are more prominent. The inflorescence is a yellow cylindrical spike on a hairy peduncle 3–6 mm long. The pods are linear and 50–110 mm long by 2–3 mm wide, and the seeds have a white aril.[1]

It flowers from June to September and fruits from August to December.[1]

Distribution

It is found in the MacDonnell Ranges Bioregion of Central Australia.[1] The main population is on Undoolya station.[5]

Habitat

It is generally found on steep south facing slopes on skeletal soils.[1][5]

Conservation status

It is listed as "vulnerable" under both Commonwealth and Territory legislation.[1][2] The major threat to its survival is frequent bushfires.[4]

References
  1. "Acacia undoolyana G.J.Leach". Flora NT. Retrieved 25 January 2020.
  2. "Acacia undoolyana — Undoolya Wattle, Sickle-leaf Wattle". Department of the Environment. Commonwealth of Australia. Retrieved 25 January 2020.
  3. "Acacia undoolyana G.J.Leach". WATTLE Acacias of Australia. Retrieved 24 January 2020.
  4. Leach, G.J.; Latz, P.K.; Soos, A. (1988). "Acacia undoolyana: A new species from central Australia". Journal of the Adelaide Botanic Gardens. 11 (1): 55–58. JSTOR 23888259. pdf
  5. Tindale, M.D.; Kodela, P.G. (2020). "Acacia undoolyana G.J.Leach". Flora of Australia. Canberra: Australian Biological Resources Study, Department of the Environment and Energy. Retrieved 25 January 2020.
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