Researchers from the Xishuangbanna Tropical Botanical Garden (XTBG) of the Chinese Academy of Sciences have collected and maintained a collection of about 100 plants of Annonaceae, a large pantropical flowering plant family. Recently, observations of flower morphology in the Annonaceae collection at XTBG have led to the identification of two unknown species belonging to the genus Polyalthiopsis.
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Source: Phys.org