Crassula perfoliata var. falcata (synonym Crassula falcata), known by the common names airplane plant and propeller plant, is a succulent plant endemic to South Africa, from the Cape of Good Hope.
The foliage is gray-green with striking texture, on plants that grow to tall.
The flowers are tiny and scarlet red, that rise in dense clusters above the foliage for a month in summer.
Crassula falcata is cultivated for use in drought tolerant and succulent gardens, and in container gardens.