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Perianth 5-lobed, the lobes each developing in fruit dorsally a low blunt pyramidal horn without any wings.
Seeds “horizontal” (i.e. vertically compressed); testa apparently thinly crustaceous.
Leaves more or less fleshy, entire, alternate, sessile, narrow but not scale-like.
Perennial herbs, sometimes thinly woody below more or less densely silky-hairy.
Fruit with membranous pericarp.
Endosperm absent.
Embryo annular.
Stigmas 2 (3).
Stamens 5.