labellum

[ luh-bel-uhm ]

Phonetic (Standard)IPA

noun

, Botany.

, plural la·bel·la [l, uh, -, bel, -, uh].

the petal of an orchid that differs more or less markedly from the other petals, often forming the most conspicuous part; the lip.

labellum

/ ləˈbɛləm /

the part of the corolla of certain plants, esp orchids, that forms a distinct, often lobed, lip
a lobe at the tip of the proboscis of a fly

1820–30; < Latin, diminutive of labrum lip; for formation castellum

C19: New Latin, diminutive of Latin labrum lip

Harrisoniae in colour and size of sepal and petal; in general shape and in the hues of the labellum after L. purpurata.

Certainly, if I may trust the vessels, the simple labellum of Gymnadenia consists of three organs soldered together.

My case of the Aceras with the aborted labellum squeezed against stigma supports your view.

I am still more pleased that I was right about insects gnawing the fleshy labellum.

This is important, as it explains all the astounding projections on the labellum of Oncidium, Phalaenopsis, etc.

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