Therefore, the utilization of orphan crops has become an effective ... Water caltrop (Trapa spp.) is a kind of typical orphan crop, which has been consciously collected and domesticated as early ...

The water caltrop is distinguishable from the water chestnut by its trapezoidal shape and sharp thorns. Traditional Chinese medicine uses water chestnuts to reduce heat and inflammation in the body, ...

Naturalistically carved with a lotus root, a water caltrop, and a leafy floral spray, all atop a large lotus leaf. 5.2cm (2in) long.