Blakely, W.F. (3 October 1928), Description of three new species of Eucalyptus and one Acacia. Journal and Proceedings of the Royal Society of New South Wales 62: 212-214, t. XIX [tax. nov.]

• Type: "Near the old Wool-wash, Spring Gully Creek, Hornsby (Ray Fogarty, E. Stanton and W.F.B., June 1928). The type."

• Etymology: "Named in honour of my esteemed friend and colleague, Mr. E. N. Ward, Curator, Botanic Gardens, Sydney."

Pryor, L.D. & Johnson, L.A.S. (1971), A Classification of the Eucalypts: 96 [secondary reference]

• Text: "...hybrid, E. oblonga ssp. [oblonga] x E. pilularis ssp. [pilularis]..."

Chippendale, G.M. in George, A.S. (ed.) (27 June 1988), Eucalyptus. Flora of Australia 19: 441 [secondary reference]

• Text: "Reputed hybrid between E. oblonga and E. pilularis, fide L.D.Pryor & L.A.S.Johnson, op. cit. 96 [i.e. L.D.Pryor & L.A.S.Johnson, A Classification of the Eucalypts: 96 (1971)]."

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - APC [secondary reference]

• APC Comment: A putative hybrid involving Eucalyptus globoidea and E. pilularis.

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