Biology:Acacia latzii

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Short description: Species of plant

Acacia latzii
VU (TPWCA)[1]
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. latzii
Binomial name
Acacia latzii
Maslin[2][3]
Acacia latziiDistMap518.png
Occurrence data from AVH

Acacia latzii, also known as Latz's wattle and Tjilpi wattle,[4] is a shrubby tree[3] of the genus Acacia (in the family Fabaceae and the subgenus Plurinerves).[5] It is native to the Finke bioregion (in the south of the Northern Territory and the north of South Australia).[1]

Description

A. latzii is a shrub or tree which grows to a height of 3 to 7 m (9.8 to 23.0 ft). The branchlets may be smooth or have a sparse covering of minute flat lying hairs. The phyllodes (5 to 10 cm (2.0 to 3.9 in) long by 2 to 4 mm (0.079 to 0.157 in) wide) are narrowly linear and generally with a shallow incurving. They are leathery and a khaki to greyish green and like the branchlets may be smooth or have a sparse covering of fine hairs. They have many closely parallel veins. The inflorescences are two to five headed racemes with the raceme axes being 1.5 to 5 mm (0.059 to 0.197 in) long. The flower stalks are 5–9 mm long and have a covering of fine hairs. The heads are globular (4 mm (0.16 in) in diameter) with 13 to 18 flowers. The flowers are 5-merous and the sepals are free. The smooth, leathery pods are up to 15 cm (5.9 in) long. The dull, brown-black, oblong seeds are 5.5 mm (0.22 in) in length.[4] It flowers from April to August and fruits from February to November.[1]

Habitat

It is found growing in skeletal alkaline soil in gullies and on minor hill slopes.[4][6]

Conservation status

It has been declared "vulnerable" under both Commonwealth and Northern Territory legislation.[1][7] It is threatened by

  • increased fire exposure associated with Buffel Grass invasion;
  • seedling loss from browsing and trampling by cattle and feral herbivores;
  • vulnerable to decline due its small population and its fragmented distribution;
  • altered rainfall patterns (due to climate change) which may affect adult survivorship and decrease the rare recruitment events.[6]

Taxonomy

It was first described by Bruce Maslin in 1980[2] and named A. latzii to honour Peter Latz whose "fine" collections were the basis of Maslin's descriptions.[3] An isotype, CANB 267113.1, was collected by Latz in the Beddome Range, New Crown Station, on 21 April 1977[8]

References

  1. 1.0 1.1 1.2 1.3 1.4 "NT Flora factsheet: Acacia latzii". http://eflora.nt.gov.au/factsheet?id=3477. 
  2. 2.0 2.1 "Acacia latzii". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. https://biodiversity.org.au/nsl/services/rest/name/apni/65314. 
  3. 3.0 3.1 3.2 Maslin, B.R. (1980). "Acacia (Leguminosae-Mimosoideae): A contribution to the flora of central Australia". Journal of the Adelaide Botanic Gardens 2 (4): 313, fig. 5,8 (map). 
  4. 4.0 4.1 4.2 Cowan, R.S.; Maslin, B.R. (2019). "Acacia latzii. In: Flora of Australia.". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. https://profiles.ala.org.au/opus/foa/profile/Acacia+latzii. 
  5. Stirton, C.; Maslin, B. (1998). "Generic and infrageneric classification in Acacia". Bulletin of the Mimosoidae Working Group 20. https://www.researchgate.net/publication/234039920. 
  6. 6.0 6.1 "Threatened Species of the Northern Territory: Acacia latzii Maslin". 2012. https://nt.gov.au/__data/assets/pdf_file/0016/208402/acacia-latzii.pdf. 
  7. Department of the Environment. "Acacia latzii — Latz's Wattle" (in en). Commonwealth of Australia. http://www.environment.gov.au/cgi-bin/sprat/public/publicspecies.pl?taxon_id=14275. 
  8. "Occurrence record: CANB 267113.1". https://avh.ala.org.au/occurrences/33e373ba-4864-4157-bfac-0da8df502588. 

Wikidata ☰ Q15287549 entry