Atriplex fissivalvis

Atriplex fissivalvis
Atriplex fissivalvis fruit
from Mueller 1889[1]
NT (TPWCA)[2]
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Amaranthaceae
Subfamily: Chenopodioideae
Genus: Atriplex
Species: A. fissivalvis
Binomial name
Atriplex fissivalvis
Occurrence data from AVH
Synonyms[5]

Haloxanthium fissivalve (F.Muell.) Ulbr.
Obione fissivalvis (F.Muell.) G.L.Chu

Atriplex fissivalvis, commonly known as gibber saltbush, is a plant species in the family Amaranthaceae, subfamily, Chenopodiaceae.[3] It occurs in the Australian states of South Australia, New South Wales, Queensland and the Northern Territory.[6][7][8][2]

Description

Atriplex fissivalvis is an annual monoecious herb 10–30 centimetres (4–12 in) high, which branches from the base.[8] The leaves (on a stalk of 5–10 millimetres (0.2–0.4 in)) are about 20 millimetres (1 in) long, with toothed or sinuate margins and an acute apex.[6][8] It flowers in clusters[3] in the axils of leaves,[8] from June to November (in the Northern Territory).[2] Fruiting is from June to November (in the Territory),[2] and the fruit is without a stem and enclosed in bracteoles.[8]

Distribution

In the Northern Territory it is found in the IBRA regions of Finke, MacDonnell Ranges, Simpson Strzelecki Dunefields, and Stony Plains.[2]

Taxonomy & naming

Atriplex fissivalvis was first described by Mueller in 1875.[3][4] The specific epithet, fissivalvis, comes from the Latin, fissus (cleft) and valvis (valved), giving "split-valved".[9]

Similar Taxa

"Atriplex fissivalvis could be confused with A. lobativalvis, however the latter has fruiting bracteoles that lack appendages on the dorsal surface, are prominently keeled or have a raised area on the lower dorsal surface, have margins that are fused for over one-third their length, and has a preference for freshwater swamps and claypans."[2]

Conservation status

The Northern Territory lists this species as "Near Threatened" under the TPWCA act.[2]

References

  1. ↑ von Mueller, F.J.H. (1889) Iconography of Salsolaceous Plants I R.S. Brain, Government Printer, Melbourne.
  2. 1 2 3 4 5 6 7 "NTflora: factsheet for Atriplex fissivalvis". Northern Territory flora online. Northern Territory Government. Retrieved 6 July 2018.
  3. 1 2 3 4 "APNI Atriplex fissivalvis". IBIS database. Retrieved 6 July 2018.
  4. 1 2 von Mueller, F.J.H. (1875) Fragmenta Phytographiae Australiae 9(77): 123
  5. ↑ Govaerts, R. et. al. "Plants of the World online Atriplex fissivalvis". Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 6 July 2018.
  6. 1 2 S.W.L. Jacobs. "New South Wales Flora Online: Atriplex fissivalvis". Royal Botanic Gardens & Domain Trust, Sydney, Australia.
  7. ↑ AVH Occurrence data: Atriplex fissivalvis
  8. 1 2 3 4 5 "Atriplex fissivalvis F.Muell". Electronic Flora of South Australia Fact Sheet. State Herbarium of South Australia.
  9. ↑ Stearn, W.T. (2004) Botanical Latin, 4th ed. pp. 413, 523. Timber Press, Oregon.


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