The rostellum is a projecting part of the column in Orchidaceae flowers, and separates the male stamen from the female gynoecium, commonly preventing self-fertilisation. In many orchids, such as Orchis mascula, the pollinia or pollen masses, are connected by stipes down to adhesive discs attached to the rostellum which forms cups keeping the discs...
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http://en.wikipedia.org/wiki/Rostellum
[helminth] Rostellum m (meaning `small beak`, from the Latin rostrum for `beak`; pl. rostella) in helminthology is a protruding part of the anterior end of soft-bodied tapeworms. It is a retractable, cone-like muscular structure that is located on the apical end of the scolex, and in most species is armed with hooks, the organs of attachmen...
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http://en.wikipedia.org/wiki/Rostellum_(helminth)
a structure on the column as a little beak a slender extensin from the upper edge of the stigma
Found on
http://orchidfetish.com/glossary.html
• (n.) A small beaklike process or extension of some part; a small rostrum; as, the rostellum of the stigma of violets, or of the operculum of many mosses; the rostellum on the head of a tapeworm.
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http://thinkexist.com/dictionary/meaning/rostellum/
The area of tissue that separates the stigma from the anther; an adhesive portion of the stigma which aids pollen transfer.
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http://www.anbg.gov.au/cpbr/cd-keys/orchidkey/html/glossary.html
(from the article `Orchidales`) In the majority of the orchids, a portion of one of the three stigma lobes forms the rostellum, a flap of tissue that projects down in front of the ...
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http://www.britannica.com/eb/a-z/r/69
<botany> A beak-like upward extension of the stigma in orchids. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
(ros-tel´әm) a small protuberance or beak, especially the fleshy protuberance of the scolex (mouth) of a tapeworm, which may or may not bear hooks.
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http://www.encyclo.co.uk/local/21001
Ros·tel'lum noun ;
plural Rostella . [ Latin See
Rostel .] A small beaklike process or extension of some part; a small rostrum; as, the
rostellum of the stigma of violets, or of the operculum of many mosses; the
rostellum on the head of a tapeworm.
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http://www.encyclo.co.uk/webster/R/95
A little beak; particularly a projection above the stigma in the orchid flower.
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http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms
Type: Term Pronunciation: ros-tel′ŭm Definitions: 1. The anterior fixed or invertible portion of the scolex of a tapeworm, frequently provided with a row (or several rows) of hooks.
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http://www.medilexicon.com/medicaldictionary.php?t=79016
a structure on the column as a little beak a slender extensin from the upper edge of the stigma
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http://www.orchidspecies.com/glossary.htm
rostellum 1. A small part of an animal or plant that resembles a beak; for example, the hooked projection from the head of a tapeworm. 2. A small beaklike part, such as a projection on the stigma of an orchid, a tubular mouthpart on some insects, or the hooked projection on the head of a tapeworm.
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http://www.wordinfo.info/words/index/info/view_unit/710/
an organ usually formed from the uppermost margin of the stigma and to which the pollinia usually adhere to after the flower opens
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https://www.encyclo.co.uk/local/22591
No exact match found.
