Thistle gall cut open in order to show internal structure

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Size: 3873px × 3009px
Location: Oxfordshire, UK
Photo credit: © Helen White / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., arvense, asteraceae, asterales, biology, california, canada, canadian, cardui, caused, cecidia, cirsium, corn, creeping, cursed, cut, cynareae, entomology, field, fly, gall, green, hard, hell, internal, lettuce, open, perennial, prickly, small-flowered, structure, thistle, urophora