1. A treelike central Mexican cactus (Cephalocereus senilis) having rose-colored flowers and tufts of long, white hair on the tips of its branches.

• 老人仙人掌：一种墨西哥中部的树形仙人掌（老人仙人掌），开玫瑰色的花，其枝干的末端有较长的白色茸毛