Paleontologists have discovered what they say is the oldest macrofossil evidence of Paullinieae, a diverse group of tropical and subtropical climbing plants that belong to the soapberry family Sapindaceae. Transverse section of Ampelorhiza heteroxylon. Image credit: Jud et al., doi: 10.1371/journal.pone.0248369. Paullinieae are tropical and subtropical woody vines, herbaceous climbers, …
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