achene
Achene
Dry, one-seeded fruit that develops from a single ovary and does not split open to disperse the seed. Achenes commonly occur in groups – for example, the fruiting heads of buttercup Ranunculus and clematis. The outer surface may be smooth, spiny, ribbed, or tuberculate, depending on the species.
© RM 2009. Helicon Publishing is division of RM.
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