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Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation'Haplopappus' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/haplopappus/). Accessed 2024-02-27.
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A genus of about 150 species of herbs and shrubs, confined to the New World and found mainly in California, Mexico, and Chile.
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