In this picture, the first true leaves grew 90 degrees across from the cotyledon, and the second true leaves 90 degree across from the previous. A defining characteristic of fast plants is that each layer of leaves grow across from the last. Thus, the Fast Plant belongs to a family of plants call Cruciferous plants. The common name Cruciferous comes from the word cross or crucifix. The scientific name for Cruciferous plants is Brassica. The scientific name for the Fast Plant is Brassica Rapa. Note, the flower head started to form on the plant.