
1) Petal
Found on
https://www.crosswordclues.com/clue/labellum

Latin, meaning: a little lip / a small washing vessel.
Found on
http://archives.nd.edu/lll.htm

lip; one of three or five petals which is (usually) different from the others, e.g. in Orchidaceae and Stylidiaceae.
Found on
http://en.wikipedia.org/wiki/Glossary_of_botanical_terms

Labellum (plural: labella) is the Latin diminutive of labium, meaning lip. These are anatomical terms used descriptively in biology: ...
Found on
http://en.wikipedia.org/wiki/Labellum
[botany] In botany, the labellum (or Lip) is part of an orchid, Canna, or other less known flower that serves to attract insects that pollinate the flower, and acts as a landing platform for those insects. Labellum (plural: labella) is the Latin diminutive of labium, meaning lip. The labellum is a modified petal and can be distinguished fro...
Found on
http://en.wikipedia.org/wiki/Labellum_(botany)
[insect anatomy] In entomology, the term labellum has been applied variously and in partly contradictory ways. One usage is in referring to a prolongation of the labrum that covers the base of the rostrum in certain Coleoptera and Hemiptera. In contrast, the commonest current use of the term is in the anatomy of the mouthparts of Diptera, p...
Found on
http://en.wikipedia.org/wiki/Labellum_(insect_anatomy)

the usually modified, adaxial, inner perianth segment of the orchid flower which by torsion of the ovary is usually abaxial
Found on
http://florabase.dpaw.wa.gov.au/help/glossary

a very distinct lip like petal on orchids
Found on
http://orchidfetish.com/glossary.html

• (n.) A small appendage beneath the upper lip or labrum of certain insects. • (n.) The lower or apparently anterior petal of an orchidaceous flower, often of a very curious shape.
Found on
http://thinkexist.com/dictionary/meaning/labellum/

A lip; in orchids and gingers the highly modified ventral petal that is primarily involved in pollination.
Found on
http://www.anbg.gov.au/cpbr/cd-keys/orchidkey/html/glossary.html

The third petal of an orchid flower, modified by evolution into a lip often used as an attractive landing platform for pollinators.
Found on
http://www.beautifulorchids.com/orchids/orchid_care_tips/glossary.html

[3 related articles]
Found on
http://www.britannica.com/eb/a-z/l/3

The expanded tip of the labium, used by many flies to mop up surface fluids.
Found on
http://www.earthlife.net/insects/glossary.html

A lip, in orchids, the distinctive median petal that serves as an alighting platform for pollinating insects. ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
La·bel'lum (lȧ*bĕl'lŭm)
noun ;
plural Latin
Labella (- lȧ), English
Labellums (-lŭmz). [ Latin , dim. of
labrum lip.]
1. (Botany) The lower or apparently anterior petal of an orchidaceous flower, often of a very curio...
Found on
http://www.encyclo.co.uk/webster/L/1

Lip, particularly the lip of orchids.
Found on
http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms

a very distinct lip like petal on orchids
Found on
http://www.orchidspecies.com/glossary.htm

In botany, the labellum is the part of the corolla of certain plants, especially orchids, that forms a distinct, often lobed, lip.
Found on
http://www.probertencyclopaedia.com/browse/BL.HTM

labellum 1. A small lip-like part, such as the tip of the proboscis of various insects, used for lapping up liquids. 2. A small appendage beneath the upper lip or labrum of certain insects.
Found on
http://www.wordinfo.info/words/index/info/view_unit/710/

Lower petal of an orchid flower; it is a different shape from the two lateral petals and gives the orchid its characteristic appearance. The labellum is more elaborate and usually larger than the other petals. It often has distinctive patterning to encourage pollination by insects; sometimes it is extended backwards to form a hollow spur co...
Found on
https://www.encyclo.co.uk/local/21221

a little lip / a small washing vessel.
Found on
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found.