Helianthus anomalus, one of three hybrid species in the sunflower genus
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Helianthus anomalus, one of three hybrid species in the sunflower genus
Pictured here in Utah, this species inhabits sand dunes in northern Arizona and Utah, a novel habitat relative to both parental species H. annuus and H. petiolaris. Apart from the environmental differences, H. anomalus exhibits traits commonly found in native sand dune plants, like the accelerated root growth rates that allow it to reach scarce water resources.
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What are ways species exchange genes with each other? Hybridization and gene flow are shortcuts to biodiversity that don’t always involve differentiation.
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