Invasive Species Compendium

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Abstract

Distribution, habitat preferences and status of Thladiantha dubia bunge (Cucurbitaceae) in Croatia.

Abstract

Two previously known localities of Thladiantha dubia in Zagreb (Botanical Garden of Faculty of Science and Savica) were confirmed and four new localities (village Medinci near Slatina, Lateral Channel Adžamovka near Vrbova, village Zvonimirovo and channel Stara Savica in Zagreb) were recorded between 2015 and 2020. In Medinci and Zvonimirovo, male populations were registered, while in all other localities female populations of Th. dubia were discovered flowering and bearing seedless fruits. Since there were no mixed populations found, and specific pollinators of this dioecious and entomophilous species are absent from Europe, the fruits are most likely parthenocarpic. According to our observations, Th. dubia can be classified as a naturalized, non-invasive alien weed in Croatia.