A deciduous tree (Idria columnaris), native to Baja California and having a thick, tapering, columnar trunk, slender spiny branches, and yellow flowers.

• 圆柱木：一种长在美国下加利福尼亚州的落叶树（圆柱木圆柱木属），有结实的、渐尖的柱状树干，细长而多刺的枝和黄色花朵