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You wouldn’t think there would be much to attract ants to a cactus. They have waxy stems covered with spines. There is one structure in this photograph, however, that is highly attractive to ants.
Do you see it yet? No, it isn’t the clusters of extrafloral nectaries. It’s a bud. What are the ants doing? In case you [...] You get to see a lot of surprising things in the Sonoran Desert of the southwestern United States. How cacti provide nectar for ants is just one example. Most of us learned in school that flowers produce nectar, which is then collected by bees, butterflies, bats and/or moths. Extrafloral nectaries are structures on a plant that [...] |
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