青红兰（学名：Rhoeo spathacea），又称如意兰、蚌兰花、荷包兰、海蚌念珠、蚶花、红蚌兰叶、紫万年青、紫蒀、紫兰、红面将军、血见愁等等。为药食两用植物。

青红兰的茎粗壮，多少肉质，高不及50厘米，不分枝。叶则互生而紧贴，披针形，长15～30厘米，宽2.5～6厘米，先端渐尖，基部鞘状，上面绿色，下面紫色。花则白色，腋生，具短柄，多数，聚生，包藏于苞片内；苞片2，蚌壳状，大而压扁，长3～4厘米，淡紫色。

Tradescantia spathacea, the boatlily or Moses-in-the-Cradle, is a herb in the Commelinaceae first described in 1788. It is native to Belize, Guatemala, and southern Mexico (Chiapas, Tabasco, and the Yucatán Peninsula) but widely cultivated as an ornamental and naturalized in parts of Florida, Texas, Hawaii, and various oceanic islands.