labelloidadj.

1826 Bot. Reg. 12 992 In the view..which is here taken of this genus [sc. Gilliesia], the petaloid segments are considered perfect bracteæ,..and the fleshy central labelloid body the perianthium.

1830 J. Lindley Introd. Nat. Syst. Bot. 275 Perianthium minute, either a single labelloid lobe, or an urceolate 6-toothed body.

1935 Orchid Rev. 43 114 These petals were bent back towards the upper sepals, so that the perianth appeared to be composed of three plain sepals, and three labellum-like or ‘labelloid’ petals.

2007 H. Kretzschmar et al. Orchid Genera Anacamptis, Orchis & Neotinea 121 The species shows a high variation spectrum in flower morphology, apart from mutants (labelloid forms of the matched petals, malformed spurs) there is the normal variation of the vegetative indicators.