Ox-eye Daisy (leucanthemum Vulgare) Gall is a photograph by Dr Jeremy Burgess/science Photo Library which was uploaded on September 24th, 2018.
Ox-eye Daisy (leucanthemum Vulgare) Gall
A galled ox-eye daisy (Leucanthemum vulgare). The picture shows the composite flower head of an ox-eye daisy - the inflorescence. The inflorescence... more
Title
Ox-eye Daisy (leucanthemum Vulgare) Gall
Artist
Dr Jeremy Burgess/science Photo Library
Medium
Photograph
Description
A galled ox-eye daisy (Leucanthemum vulgare). The picture shows the composite flower head of an ox-eye daisy - the inflorescence. The inflorescence is comprised of many small flowers of two types. The white petals" at the periphery are sterile flowers called ray florets, and the yellow centre of the head is a mass of fertile flowers, known as disc florets. The picture shows the development of a gall amidst the disc florets. This has been caused by a gall fly laying an egg in one of the disc florets early in its development. The feeding larva within the immature floret has disturbed the normal development of the tissues, causing them to produce a disorganised outgrowth comprised of white tubules and green blades with brown hairs at their surface; structures that resemble the rays and the bracts of a normal flower head."
Uploaded
September 24th, 2018
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