1. Stem slender, less
angulate, less hairy; bracts shorter, 3-4 mm, apex slightly obtuse.
茎纤细,不那么具棱,不那么有毛;苞片短,3-4毫米,先端稍钝。
2. 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。
3. 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。