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The mystery of the Oxalis pes-caprae

Oxalis pes-caprae, commonly known as an invasive plant species in Israel, has rapidly spread across both cultivated lands and nature reserves. It forms dense carpets that inhibit the germination and growth of native plants. In Israel, traditionaly, Oxalis pes-caprae has relied on a unique reproductive strategy, avoiding seed production entirely. Instead, it reproduces through bulbs that detach from the parent plant. These bulbs move short distances underground using contractile roots and can be dispersed over greater distances by human activity and moles (Galil, 1968). Recently, however, suspicions have arisen that Oxalis pes-caprae may have started reproducing sexually and producing seeds. This development could suggest the introduction of a new variety into Israel. We need your help

!to investigate this phenomenon!

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How can you help?


After learning about Oxalis pes-caprae, students will take part in the citizen science Oxalis pes-caprae survey. They will explore their local areas to sample Oxalis pes-caprae plants, photograph them according to research guidelines, and report their findings. This will involve uploading photos and additional details to the GOVMAP platform and using the platform to identify and tag the types of flowers they photograph.
By analyzing the collected data, students can create maps of different blooming areas and potentially identify new types of Oxalis pes-caprae. Additionally, students are encouraged to propose new research ideas and explore further mysteries related to the plant. This work will be done under the guidance of the TCSS Oxalis pes-caprae team and lead scientist Professor Amram Eshel.

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For more information:

Project leader: Shiri Kashi

Email: Kashi.shiri@gmail.com

To the full project page in Hebrew

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