POLLINATION SYSTEMS – OPHRYS, ORCHIS AND PAPHIOPEDILUM

POLLINATION SYSTEMS – OPHRYS, ORCHIS AND PAPHIOPEDILUM

35 Ophrys insectifera L. in. GRUFB. (Fly Ragwort) – an orchid with a very strange pollination process.
In the case of the Ragwort species, it is not – as usual – the food instinct of the pollinators addressed, Instead, the plant tries here with a cleverly designed deception maneuver, to use the male insect's sex drive for pollination. It does this through the insect-like shape of its flowers (Female dummy) and above all by the scent of flowers, which is said to correspond to the sexual scent of the females of certain insect species.

36 A male of the digger wasp species Gorytes mystaceus visiting a flower of Ophrys insectifera. The male rubs with it
the ventral side of its abdomen the hairy surface of the labeilum, which in some cases leads to the triggering of real attempts at copulation, as can be seen from the curvature of the abdomen.

37 Ophrys apifera (Bee ragwort) – an example of self-pollination. A short time after blooming, the pollen clumps dissolve (Pollinien) from their compartments and hang down on their stalks. Not by external influences (z.B. Wind), Instead, the pollinia then come into contact with the scar surface through a drying process of the stalks.

38 ‘ Heel area "of the" shoe " (Labellum) of Paphiopedilum. The pillars are clear here (1), the flat one, sterile Staubblatt (2), scar (3) and the dust bag (j) to recognize. 7 denotes the opening, by which only the insect can leave the flower (see. Brother. Fig. 3 and side 18). (4 = Lippe; 6 = lateral petalum)

39 Pollinia-bearing insect on a flower of Orchis x hybrida BOENN1NGH. (O.purpurea HUDS. 50 x O.militaris)

40 Male of a longhorn bee (Eucera nigrilabris) With 3 attached pollinaries of Ophrys tenthredinifera – a bulb of pollen has been detached! – Totes Tier, needled and photographed a short time after visiting the flowers.

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