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Floral UV-Absorption Patterns and Anthochlor Pigments in the Asteraceae

Ron Scogin
The Southwestern Naturalist
Vol. 23, No. 3 (Aug. 10, 1978), pp. 371-374
DOI: 10.2307/3670243
Stable URL: http://www.jstor.org/stable/3670243
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Floral UV-Absorption Patterns and Anthochlor Pigments in the Asteraceae
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Abstract

The spatial distribution of anthochlor pigments in ray florets of ten genera (86 species) of the Asteraceae (tribes Heliantheae and Helenieae) is presented. The presence and spatial segregation of these pigments yield a floral UV-absorption pattern, visible to pollinating insects, which may play a major role in reproductive isolation and speciation in the plant groups.

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