Duma horrida subsp. horrida

Spiny Lignum

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Stiff, divaricately branched, but rather open shrub to c. 1 m high and wide (but usually much less), stems greyish-brown, commonly partly leafless, often spine-tipped. Leaves produced in tufts on short lateral shoots, sessile, linear, 1–5 cm long, 1–2 mm wide, thickish, margins recurved to revolute, the midvein often apparently impressed on the lower surface. Flowers sessile in axillary or nodal clusters; perianth segments 2–3 mm long, fused in lower c. one-third in males, in lower half to two-thirds in females, cream or yellowish, sometimes reddish-tinged, female flowers becoming more or less turbinate in fruit, with segments prominently thickened about the middle. Nut broadly ovoid, 2–2.5 mm long, obscurely trigonous, smooth, brown. Flowers mainly Sep.–Nov.

LoM, MuF, MuM, MSB, NIS, RobP, VRiv, Wim. WA, SA, NSW. Infrequent on silty soils and clays fringing shallow swamps and lakes in the northwest, and near the Murray River downstream from about Swan Hill.

Created by: Andre Messina, 2016-08-04
Updated by: Val Stajsic, 2018-07-24
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Distribution map
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Duma horrida subsp. horrida in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Duma horrida subsp. horrida in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Victorian Riverina present native
Murray Scroll Belt present native
Robinvale Plains present native
Murray Fans present native
Northern Inland Slopes present native

State distribution

Distribution map
State
South Australia
New South Wales
Victoria