Cactus Flower Macro
by Lingfai Leung
Title
Cactus Flower Macro
Artist
Lingfai Leung
Medium
Photograph - Photographs
Description
Like their spines, cactus flowers are variable. Typically, the ovary is surrounded by material derived from stem or receptacle tissue, forming a structure called a pericarpel. Tissue derived from the petals and sepals continues the pericarpel, forming a composite tubeāthe whole may be called a floral tube, although strictly speaking only the part furthest from the base is floral in origin. The outside of the tubular structure often has areoles that produce wool and spines. Typically, the tube also has small scale-like bracts, which gradually change into sepal-like and then petal-like structures, so the sepals and petals cannot be clearly differentiated (and hence are often called "tepals").
2017 Lingfai Leung
Uploaded
June 3rd, 2019
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