Uncarina: the Mousetrap Tree

Andry Petignat tells us about the genus Uncarina (distinguished by their hooked seeds). These Madagascar natives in the Pedaliaceae often grow into pachycaul trees.

Enjoy this presentation recorded at the 2025 CSSA convention.

This talk graciously sponsored by CSSA Board Member Phuc Huynh

About Andry Petignat

Andry Petignat has dedicated his life to protecting the unique flora of Madagascar’s spiny forest and raising awareness about the urgent need to conserve this increasingly fragmented region. Born and educated in Toliara, southwestern Madagascar, Andry inherited a deep connection to the local environment from his father, who founded the Antsokay Arboretum in the early 1980s. Since 2003, Andry has continued his father’s legacy by managing the arboretum, which houses over 900 plant species, 90 percent of which are endemic to the spiny forests of southwest Madagascar. The arboretum plays a crucial role in the conservation of these endangered species.

With support from the Critical Ecosystem Partnership Fund, Andry has spearheaded several educational initiatives at the arboretum. These include the creation of an education center, the development of activities for school children and teachers, and the recruitment of local educators to raise awareness about the importance of plant diversity and sustainable natural resource management.

Andry is also a co-author of several notable works, including Baobabs of the World, Guide to the Succulent Plants of Southwest Madagascar, and Baobabs de Madagascar.


Videos from the 2025 CSSA Convention in San Diego

Every other year, CSSA members meet for 3 days of presentations from the world’s top succulentists. Browse more talks from the April 25-27, 2025 convention here.

You can also see the full playlist of videos from the 2025 convention on YouTube. Be sure to like and subscribe there to help more people see our content.

Stay up to date with succulent plant exploration, research and conservation by becoming a CSSA member

Memberships start at $20/year

Photo Credits: The presenters