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.

youdao

一年生草本茎外倾或直立，30-90厘米高，分枝，具棱，具稀的反折的皮刺沿着棱。

Herbs annual. Stems decumbent or erect, 30-90 cm tall, branched, angulate , with sparse retrorse prickles along angles.

youdao