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n. pl. pol·lin·i·a (-ē-ə)
A coherent mass of pollen grains typically transferred as a unit during pollination, found in the flowers of certain plants such as orchids and milkweeds.

[New Latin, from pollen, pollin-, pollen; see pollinate.]


n, pl -ia (-ɪə)
(Botany) a mass of cohering pollen grains, produced by plants such as orchids and transported as a whole during pollination
[C19: New Latin; see pollen]


(pəˈlɪn i əm)

n., pl. -lin•i•a (-ˈlɪn i ə)
an agglutinated mass of pollen grains, characteristic of plants of the orchid and milkweed families.
[1860–65; < New Latin pollin-, s. of pollen pollen]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pollinium - a coherent mass of pollen grains (as in orchids)
pollen - the fine spores that contain male gametes and that are borne by an anther in a flowering plant
References in periodicals archive ?
Orbicules have not been observed in taxa with viscin threads, elastoviscin, massulae or compact pollinia (Pacini, 1997).
Effects of pollinia removal and insertion on flower longevity in Chloraea alpina (Orchidaceae).
nodosa it was observed the great dominance of male (pollinia removal) over the female success (deposition of pollinia on the stigmatic cavity) (SCHEMSKE, 1980).
Pollinia are an efficient way to deliver this amount of pollen (Darwin, 1862).
The prairie fringed orchid's flowers are fragrant only at night, and pollinia are picked up by the proboscises of hawkmoths as they ingest nectar.
They agreed to exempt the following from CITES permitting requirements: seeds; pollinia (the encapsulated pollen of orchids); tissue cultures and flasked seedlings; cut flowers of artificially propagated plants; and, for Vanilla species, fruits, parts, and derivatives from artificially propagated plants.
plebeja was the only moth collected to have orchid pollinia on its body.
Proponents of effective pollination limitation argue that early fruit abortion is due largely to insufficient numbers of compatible pollinia for species that are mostly self incompatible (Wyatt and Broyles 1994).
Some orchid species are pollinated by only a single insect genus or species and the pollinia vector(s) often belongs to only one gender (e.
This hypothesis rests upon the wide taxonomic range of insect pollinators, both males and females, found immobile into the tubular flowers overnight with pollinia attached to their head.
Pollinators are manipulated by orchids that glue the pollinia to a specific location on their bodies so it can be subsequently removed and placed on the stigma when the pollinators visit another orchid of the same species.
This division was founded on the belief that in the Periplocaceae the pollen tetrads are loosely deposited on scooplike translators attached to a soft, sticky, somewhat amorphous viscidium, whereas in the remainder of the Asclepiadaceae the pollen is gathered into pollinia and attached to a cliplike corpuscle.