Primrose (Primula vulgaris), close-up of the spring wildflower flowering during March, England, UK. A pin-eyed flower type.


Primroses are unusual in having two almost identical, yet slightly different types of flowers. In one type, there is a greenish disc (pin-eyed), while in the other (thrum), there is instead a cluster of bright yellow anthers. In pin-eyed flowers, the stigma is at the top of the flower tube and can be seen in the centre of the flower looking like a small green pin head. In this type of flower, the anthers are halfway down the central flower tube, in a ring around the style. In the thrum-eyed type, the style reaches only halfway up the flower tube, so that the stigma is also positioned halfway up inside the tube. The anthers in this type are at the top of the flower tube and can be seen as a yellow/orange mass in the centre of the flower. The two different flower structures prevent self-pollination. The flower in this image is pin-eyed. For comparison, image 2J1KPFG or 2J1KPFF shows the thrum-eyed type.


Size: 4386px × 2924px
Location: Ludshott Common, Hampshire, England, UK
Photo credit: © Gillian Pullinger / Alamy / Afripics
License: Licensed
Model Released: No

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