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n. pl. la·bel·la (-bĕl′ə)
1. The median petal of an orchid flower, usually different in shape, size, or color from the two lateral petals; lip.
2. A liplike part, such as the tip of the labium of certain flies, used for lapping up liquids.

[Latin, diminutive of labrum, lip; see leb- in Indo-European roots.]

la·bel′late (-ĭt) adj.


n, pl -la (-lə)
1. (Botany) the part of the corolla of certain plants, esp orchids, that forms a distinct, often lobed, lip
2. (Zoology) a lobe at the tip of the proboscis of a fly
[C19: New Latin, diminutive of Latin labrum lip]
laˈbelloid adj


(ləˈbɛl əm)

n., pl. -bel•la (-ˈbɛl ə)
the lowest of the three orchid petals, usu. larger and more conspicuous than the others; the lip.
[1820–30; < Latin, diminutive of labrum lip]
la•bel′loid, adj.
References in periodicals archive ?
ovatilabium differs from the nominate form by its large egg-shaped labellum.
The structure of the labellum is one of Mother Nature's true wonders.
lanuginose), odorless flowers and proportionately longer, narrower labellum with bright green to lemon-yellow, narrow throat with straight sides (vs.
This study was therefore conducted to describe variations in the flowers of Mokara with emphasis on the shapes of sepals, petals and labellum using geometric morphometric (GM) methods based on summarized information about contours of the structures.
Clearly at 40oC, an intense dehydration reduced the self life to less than a day, while for the wet storage condition only at third day appeared symptoms of senescence, which was characterized by discoloration and necrosis of labellum, but no visual detectable wilting of petals or necrosis of labellum were present.
Bees land on the brightly colored lip or labellum of the rose pogonia flower.
The flower has a large, sack-like labellum with a longitudinal slit on its upper surface.
A series of raised glands (calli) are arranged on the top of the labellum forming a prominent structure that is diagnostic of the species.
Blooms are small, the labellum is thickened and without side lobes.
Also, the proportions of the labellum in taxa of the complex are distinctive, since the central lobe width and the length across the spread lateral lobes are of about the same dimensions (Fig.
The flowers are resupinate, meaning that the labellum is uppermost.
The labellum of Euanthe lacks a spur; whereas all true Vanda species have a spur.