1·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。
2·Herbs perennial, annual, or biennial, acaulescent, rarely caulescent with ascending or decumbent shoots from a caudex.
多年生草本,一年生草本,二年生草本,无茎的或,具茎具上升或外倾嫩枝从一块根那里的很少。