Stackhousia clementii

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Stackhousia clementii
Stackhousia clementii.jpg
Status DECF P3.svg
Priority Three — Poorly Known Taxa (DEC) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Celastrales
Family: Celastraceae
Genus: Stackhousia
Species:
S. clementii
Binomial name
Stackhousia clementii
ALA Distribution Map for stackhousia clementii.jpg
Atlas of Living Australia Occurrence Records

Stackhousia clementii is a species of plant in the family Celastraceae and is native to Australia. [1]

Contents

The dense perennial forb typically grows to a height of 0.45 metres (1.5 ft) and produces yellow-green-brown flowers. [1]

Stackhousia clementii is sometimes referred to by its common name of Limestone Candles. [3]

Habitat

The species has a disjunct range across arid western and central Australia, with occurrence records in Western Australia, South Australia, the Northern Territory, New South Wales and Queensland. [2] [4]

In Western Australia it is found on sandstone hills scattered across the Kimberley, northern Goldfields-Esperance and Pilbara regions of Western Australia where it grows in skeletal soils. [1]

In South Australia and New South Wales the species is frequently associated with limestone flats and ridges, where it grows in sand to cracking clay. [2] [5]

Description

Dense, broom-like perennial forb that typically grows 18-50 cm high. Species is glabrous or puberulent at its base and has slender, hairless stems which are much branched in upper part. Upper leaves are usually scale-like, sometimes linear to narrowly elliptic and mostly 5-15 mm long. [2] [6]

Flowers are pale green, yellow or dark brown and borne in clusters of 1-3 in cylindrical spikes. Petals are loosely joined into a slender tube 2.4-3.2 mm long, with 5 lobes at the top. Ovate, shallowly erose to denticulate margin white bracts. Hypanthium is typically 0.5–1.5 mm long and sepals are 0.6–0.9 mm long, yellow to greenish-yellow and shallowly erose. Corolla are pale green, yellow or dark brown with tube 2.4–3.2 mm long and lobes 1–1.6 mm long and acute. Gynoecium 3-partite. [6]

Cocci usually 1, broadly obovoid to obpyriform-obovoid, curved towards axis, 2–3.3 mm long, rugose, sometimes obtusely tuberculate over distal two-thirds; basal cavity shallow to deep with thin rim extending distally exposing tongue of bony endocarp. [6]

Ecology

Stackhousia clementii has been recorded in open woodland, arid shrubland and hummock grassland on ephemeral swamp margins, plains and ridges, and sometimes in saline soil. [2] [5] [7]

A flowering time has not been consistently recorded; however, a fruiting specimen was collected in New South Wales in August. [2]

Disturbance regimes are not known for Stackhousia clementii. [2]

Stackhousia clementii flowers Stackhousia clementii flowers.jpg
Stackhousia clementii flowers

Stackhousia clementii is known or predicted to occur in the Interim Biogeographic Regionalisation of Australia Regions of the Simpson Strzelecki Dunefields, Channel Country, Mitchell Grass Downs, Eyre Yorke Block, Gawler, Tanami, Finke, MacDonnell Ranges, Burt Plain, Great Victoria Desert, Stony Plains, Sturt Plateau, Davenport Murchison Ranges, Carnarvon, Central Ranges, Great Sandy Desert, Murchison and Pilbara. [1] [4] [8]

Conservation

The species is not listed for conservation under the Environment Protection and Biodiversity Conservation Act 1999 (Cth). [2]

The species is listed in Western Australia under the Biodiversity Conservation Act 2016 (WA) as a 'Priority 3' poorly known flora species, [1] meaning it may possibly be threatened but it does not meet survey criteria, or is otherwise data deficient. It is included as a priority for survey and evaluation of conservation status so that consideration can be given to its declaration as threatened flora. [9]

The species is listed as 'Endangered' in New South Wales under the Biodiversity Conservation Act 2016 (NSW). [2] A targeted strategy for managing Stackhousia clementii has been developed under the New South Wales Government’s Saving Our Species program due to less than 10% of the species population occurring in NSW and its persistence in the wild in NSW is therefore dependent on conservation actions. [10]

Key threats to the species include a lack of available ecological information, habitat depletion, and grazing of stock and native herbivores (other Stackhousia species are eaten by stock). Activities to assist the conservation of this species include further surveys, protection of existing populations from stock and other grazing animals, no further loss of extant populations and the investigation of regeneration including seed-set, germination and seedling survival. [2]

Taxonomy

The description by Karel Domin was published in Beitrage zur Flora und Pflanzengeographie Australiens, Bibliotheca Botanica 22(89) in 1927. [11]

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References

  1. 1 2 3 4 5 6 "Stackhousia clementii". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  2. 1 2 3 4 5 6 7 8 9 10 "Stackhousia clementii - profile | NSW Environment, Energy and Science". www.environment.nsw.gov.au. Retrieved 2023-06-18.
  3. ↑ "Seeds of South Australia - Species Information". spapps.environment.sa.gov.au. Retrieved 2023-06-18.
  4. 1 2 Australia, Atlas of Living. "Species: Stackhousia clementii". bie.ala.org.au. Retrieved 2023-06-18.
  5. 1 2 "Fact sheet for Stackhousia clementii". flora.sa.gov.au. Retrieved 2023-06-18.
  6. 1 2 3 "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 2023-06-18.
  7. ↑ "Stackhousia clementii - Simpson Strzelecki Dunefields: Distribution and vegetation associations | NSW Environment, Energy and Science". www.environment.nsw.gov.au. Retrieved 2023-06-18.
  8. ↑ Department of Climate Change, Energy, the Environment and Water (16 June 2023). "Australia's bioregions (IBRA)". Department of Climate Change, Energy, the Environment and Water. Retrieved 18 June 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
  9. ↑ Western Australia Environmental Protection Authority. "Conservation Codes for Western Australian Flora and Fauna" (PDF). Retrieved 18 June 2023.
  10. ↑ "Stackhousia clementii (Stackhousia clementii) | Conservation project | NSW Environment, Energy and Science". www.environment.nsw.gov.au. Retrieved 2023-06-18.
  11. ↑ "Vascular Plants". biodiversity.org.au. Retrieved 2023-06-18.
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