1. Capsule subglobose, ca. 9 mm in diam., valves slightly smooth and flat, not obviously angulate.
蒴果近球形，长约9毫米直径，裂爿稍变平静，平，不显而易见具棱。
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2. Herbs annual. Stems decumbent or erect, 30-90 cm tall, branched, angulate , with sparse retrorse prickles along angles.
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。
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3. Main Outcome Measurements: The capsule was manipulated in the esophagus for 10 minutes. It was easy to make the capsule turn somersaults and to angulate at the cardioesophageal junction.
4. Main Outcome Measurements: The capsule was manipulated in the esophagus for 10 minutes. It was easy to make the capsule turn somersaults and to angulate at the cardioesophageal junction.
