Nicolle, D. (2013), Native eucalypts of South Australia: 34-35 [tax. nov.]

• Type: 0.7 km from Hancocks Lookout towards the Horrocks Pass road, S.A., 32 42'06"S, 138 01'55"E, 27 Oct. 1998, D.Nicolle 2568 (holo: AD 195549).

common name: Sugar Gum [n/a]

• Etymology: "... is from the Latin petilus meaning 'thin, slender', referring to its usually tall and erect-branched habit, narrow adult leaves, and narrower fruits compare to the other two subspecies."

Council of Heads of Australasian Herbaria (2016), Australian Plant Census: - APC [secondary reference]

taxonomic synonym: Eucalyptus langii Maiden & Blakely legitimate

• APC Dist.: WA (naturalised), SA

Parker, C.M. & Percy-Bower, J.M. (22 March 2018), Updates to Western Australia’s vascular plant census for 2017. Nuytsia 29: 2 [secondary reference]

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