Commonly Found North American Wildflower Turns Out To Be A Carnivore

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The western false asphodel is the first carnivorous plant found in two decades (Credit: Danilo Lima)

The western false asphodel an herb-like plant found in abundance along North America's West Coast — has been known to science since 1879. But it is only recently that researchers from the University of British Columbia discovered the innocent-looking plant's penchant for insects. The finding is particularly exciting given that this is the first new predatory plant to be discovered in 20 years.

"We had no idea it was carnivorous," says study co-author and botanist Sean Graham. "This was not found in some exotic tropical location, but really right on our doorstep in Vancouver. You could literally walk out from Vancouver to this field site."

The sticky hairs on the flower's stem trap tiny insects (Credit: Qianshi Lin)

The researchers stumbled upon the plant's well-kept secret accidentally. While studying plant genetics, they noticed that the western false asphodel lacked the same gene as other insect-munching plants. Since the plant thrives in the same kind of wet, sunny habitat with nutrient-poor soil as other carnivorous plants, they wondered if it trapped bugs for nourishment as well.

"And then they have these sticky stems," Graham told NPR. "So, you know, it was kind of like, hmm, I wonder if this could be a sign that this might be carnivorous."

To test if the plant could absorb animal nutrients, the team attached some dead fruit flies to the stem's sticky hairs. The insects had been fed nitrogen-15 isotopes. The commonly used technique allows scientists to determine the flow of the gas. Sure enough, they found that over half of the wildflower's nitrogen came from the fruit flies. Additionally, the digestive enzyme released by the plant's sticky hairs to break down the prey was similar to that found in other carnivorous plants.

The stem secretes a digestive enzyme to help break down the prey (Credit: Qianshi Lin)

The scientists, who published their findings in the August 17, 2021, Proceedings of the National Academy of Sciences, say this is the first time they have encountered predatory traps on the flower's stem. Most carnivorous plants develop unique structures further away from their flowers to prevent accidentally killing pollinators. The western false asphodel can get away with its unusual prey-capturing technique because the sticky hairs on its stem can only capture small insects such as midges, not the larger bees or butterflies involved in pollination.

This unexpected scientific finding raises the possibility of finding many other carnivorous plants hiding in plain sight. "It's a good reminder that we still don't know much about the ecology of a lot of individual plant species, even in well-known environments, " says study co-author Dr. Qianshi Lin.

Resources: NPR.com, Sciencenews.org, PNAS.org

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108 Comments
  • kainorion
    kainorion11 months
    One thing I learned from reading this is that they discovered this plant over 20 years ago.
    • thecool_kid
      thecool_kid11 months
      fun I did not know
      • explorer1221
        explorer1221about 1 year
        super cool and awesome
        • twelfth_night
          twelfth_nightabout 1 year
          Wow! I'm glad it won't eat us!
          • talkaboutbruno
            talkaboutbrunoabout 1 year
            WOW!!!😃 Sticky! Good thing we're like 10-20 times larger than those things!!😃 ;
            • da_frog
              da_frogabout 1 year
              so so cool! someone should write a meme about this....perfect meme material!
              • pupflower
                pupflowerabout 1 year
                This is so interesting! This flower definitely reminds me of the Venus Flytrap. It's a very pretty flower, too. I believe everyone needs one of these in their gardens to keep some of the pesky insects out.
                • talkaboutbruno
                  talkaboutbrunoabout 1 year
                  Why do they call it VENUS fly trap anyway? We may never know. . .
                  • galaxy02523512
                    galaxy02523512about 1 year
                    Or is it from venus
                    • pikachu1232
                      pikachu123212 months
                      Venus refers to the roman love goddess
                      • pikachu1232
                        pikachu123212 months
                        Etymology. The plant's common name (originally "Venus's flytrap") refers to Venus, the Roman goddess of love. The genus name, Dionaea ("daughter of Dione"), refers to the Greek goddess Aphrodite, while the species name, muscipula, is Latin for both "mousetrap" and "flytrap".
                  • draconix
                    draconixover 1 year
                    I wonder what happens if a bird touches it
                    • kannageboi
                      kannageboiabout 1 year
                      A bird is way too big to be digested and stuck to the stem. It will most likely be fine.
                    • annieayuwoki
                      annieayuwokiover 1 year
                      dont touch the flower
                    • bigfoot2
                      bigfoot2over 1 year
                      That's amazing, but scary. If you agree with me, pls follow me.