Ultraviolet Flowers

Nuphar lutea (L.)Sibth. & Sm. x pumila (Timm)DC.

(N. x spenneriana Gaud.)

Nuphar lutea x pumila. Visible light
Visible light
(L37C filter)
Nuphar lutea x pumila. UV light
UV light
(FF + CC20C, SB-140)
Nikon D1H, UV-Nikkor 105 mm f/4.5, @800 ISO

Both images © Bjørn Rørslett/NN

This hybrid is quite common in forest lakes in my district. The UV pattern is as distinct as it is unusual, formed by the high UV reflectance of a circle of transformed anthers. The flowers of the parent species (which overlap in their geographic range) are frequented by a number of pollinating insects, so the existence of a hybrid is not surprising.

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Last Update 1 October, 2002