Pollinia of Phalaenopsis

Pollinium, or plural pollinia, is a coherent mass of pollen grains. Image File history File links Phaleanopsis_pollinia. ... Image File history File links Phaleanopsis_pollinia. ... SEM image of pollen grains from a variety of common plants: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), hollyhock (Sildalcea malviflora), lily (Lilium auratum), primrose (Oenothera fruticosa), and castor bean (Ricinus communis). ...

They are the product of only one anther, but are transferred, during pollination, as a single unit. This is regularly seen in various plants, such as orchids and some species of the milkweed family Asclepiadaceae. Flower of the spider tree (Crateva religiosa) with its numerous conspicuous stamens The stamen is the male organ of a flower. ... Orchid re-directs here; for alternate uses see Orchid (disambiguation) Genera Over 800 See List of Orchidaceae genera. ... Genera See under Apocynaceae The Asclepiadaceae is a former plant family, now included in the dogbane family Apocynaceae, according to the AGP II. The name Asclepiadaceae however still retains the epithet nom. ...

Orchid genera have mealy pollinia. These are tapering into a caudicle (stalk), attached to the sticky viscidium. They extend into the middle section of the column. The column, or technically the gynostemium, is a reproductive structure in the center of an orchid flower (also in the birthwort family Aristolochiaceae, such as in Thottea hainanensis ). It is derived from the fusion of both male and female parts (stamens and pistil) into a single organ. ...

Most orchids have waxy pollinia. These are connected to one or two elongate stipes, which in turn are attached to the viscidium.

The combination of pollinia, caudicles, stipes and viscidium form the pollinarium. In botany, a stipe is a stem type of structure. ...