Alpinia hainanensis K. Schum., H.G.A. Engler, Pflanzenr. IV. 46 (Heft 20): 335. 1904.
Fruits of cao dou kou show up rarely in imported potpourri. These globular fruits, 1-2 cm in diameter, are typically sold with the pericarp removed exposing clusters of seeds. The seeds are edible and used medicinally or in soups.
Alpinia hainanensis is native to China and Vietnam.
Zingiberaceae