Biology:Acacia undoolyana

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Short description: Species of legume

Acacia undoolyana
VU (TPWCA)[1][2]
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. undoolyana
Binomial name
Acacia undoolyana
Acacia undoolyanaDistMap929.png
Occurrence data from AVH

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

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.[4]

Habitat

It is generally found on steep south facing slopes on skeletal soils.[1][4]

Conservation status

It is listed as "vulnerable" under both Commonwealth and Territory legislation.[1][2] The major threat to its survival is frequent bushfires.[5]

References

Wikidata ☰ Q15289260 entry