Calamus essigii W.J.Baker, Kew Bull. 57: 720 (2002)

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    • Holotype: Papua New Guinea, Central Province, Port Moresby Sub-District, Kokoda Trail, 1 mile from Owers Corner Essig and Womersley LAE 55180(K!)
    • Isotype: Papua New Guinea, Central Province, Port Moresby Sub-District, Kokoda Trail, 1 mile from Owers Corner Essig and Womersley LAE 55180(L!, LAE!, BH)