The current state of knowledge on Euphorbia subgen. Chamaesyce sect. Anisophyllum in Croatia, based on literature analysis, herbarium specimens, data from the Flora Croatica Database (FCD) and personal field observations, is presented. Before this study, six species from this section have been reported several times for Croatia: two native (E. peplis and E. chamaesyce) and four introduced and naturalized (E. humifusa, E. maculata, E. nutans, and E. prostrata). Here, I report on the occurrence of two new species, E. glyptosperma and E. serpens, in the flora of Croatia, and confirm the presence of the recently published record of E. hypericifolia. Euphorbia serpens and E. hyperificifolia were found as weeds in several garden centers in the areas of Šibenik and Zadar, where they were recently introduced through seeds in the soil of pots with ornamental plants imported from Italy. On the other hand, E. glyptosperma has been present in Croatia for approximately ten years and can be considered a naturalized species. A brief description of the three newly recorded taxa is provided, along with notes on key characteristics. Data on taxonomy, ecology and current distribution for each species are given, as well as the data on the first occurrence and the dynamics of spread of the introduced taxa in Europe and Croatia. Finally, an updated identification key comprising the nine taxa of Euphorbia sect. Anisophyllum occurring in Croatia is provided.
Milenko Milović (Thu,) studied this question.