"In the 'Revue Horticole,' 1867, p. 382, mention is made of a bush which produces these double nuts each year -- in fact, it never produces any single-seeded fruit."
"Larger, single-seeded fruit were not consumed by smaller frugivores that still thrive in degraded forests, echoing Corlett's own observation of barren South China forests that fruit to no avail."
"The single-seeded fruit are spherical, wrinkled and black upon maturity, having started out greenish-yellow."