Senecio crassissimus, also known as lavender steps, vertical leaf, and propeller plant, is a succulent species of the genus Senecio endemic to Madagascar. Resembling propellers of a plane, its fleshy and flat blue-green leaves have purple borders.
Senecio crassissimus, colloquially known as Vertical leaf senecio or Propeller plant is an evergreen leaf-succulent subshrub 45-80 cm tall by 40 cm wide with vertical ranks of silver-grey laterally positioned purple rimmed flattened fleshy leaves. Thick erect, stems produce bright yellow daisy like flowers at the tips in mid-summer to autumn. The large leaves looking as if turned on the edge are the most distinctive feature. This species thrives in rocky, sun-sweltering environment. It has adapted to its harsh environment by changing the direction of its succulent leaf surfaces so that there is no flat surface directly facing the sun. When the sun is in its most intense position, directly overhead, the plant has just a leaf edge facing the sun. This prevents moisture from evaporating.