Acacia atrox subsp. planitiicola Kodela & L.M.Copel. APNI* Synonyms: Acacia sp. aff. atrox (Kirramingly N.R., L.M.Copeland 4422) APNI*
Acacia sp. Kirramingly N.R. (L.M.Copeland 4422) Kodela APNI*
Acacia atrox subsp. planiticola orth. var. Kodela & L.M.Copel. APNI*
Description: Shrub to small tree to 6 m high, spreading by suckering; bark grey-brown, rough, vertically fissured; branchlets terete, pale light green to yellowish green, becoming darker and brownish in colour with age, glabrous, with inconspicuous low rounded longitudinal ridges.
Phyllodes sessile, subrigid, ± straight to slightly curved, ± terete to quadrangular in section, the venation indistinct, with at least 4 inconspicuous longitudinal veins (other minor longitudinal veins may not be detectable on the surface), (1.5-) 2–5 cm long, 0.7–1.5 mm wide, gradually to somewhat abruptly tapered towards apex, abruptly broadened and longitudinally splayed at base for 1–2.2 mm (leaving an ± obovate scar on branchlet when lost), apex pungent-pointed with the fine orange-brown tip 0.7–2.2 mm long; 1 small ± circular gland near base, often with a second (and rarely third) minute gland spaced along phyllode.
Peduncles (5-) 12–32 mm long, glabrous; heads globose, c. 33–41-flowered, 7–11 mm diam.
Pods and seed not known.
Flowering: March–June.
Distribution and occurrence: localised population SSW of Moree; rare. Growing in clumps on 'black soil plain', in basalt-derived cracking clay loam. Groundcover of grasses, chenopods and other herbs. Nearby patches of small trees include Casuarina cristata, Acacia stenophylla and Alectryon oleifolius. For further details see Copeland & Kodela (2012).
NSW subdivisions: NWP
Threatened species: NSW BCA: Critically Endangered
Discovered by Dr Lachlan Copeland in May 2010 while undertaking vegetation surveys in Kirramingly Nature Reserve. This taxon with its unusual, sharply pungent-pointed, sessile, basally dilated phyllodes is closely related to typical Acacia atrox. Originally published as var. "planiticola".
Text by P.G. Kodela (Mar 2012; updated Aug 2012)
Taxon concept: L.M. Copeland & P.G. Kodela, Telopea 14: 63-68 (2012))
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
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