这是在海南岛唯一蒴果具皮刺的种。
This is the only species in Hainan Island with prickles on the capsule.
给棕色绿色的蒴果，干燥时或黄的棕色，近球状，直径约6毫米，具4长和锋利翅，多于约1厘米当完全发育时。
Capsule green to brown, or yellow-brown when dry, nearly globose, ca. 6 mm in diam., with 4 long and sharp wings, more than ca. 1 cm when fully developed.
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