With only male or only hermaphrodite flowers on individual plants.
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Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation 'Sibiraea' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/sibiraea/). Accessed 2024-02-22.
A genus of a few species, scattered in the Old World from Yugoslavia to western China. It is closely allied to Spiraea, differing in being effectively dioecious and in having the carpels connate at the base.