Propellor plants are natives of southern South Africa, not found in the wild in North America.
The common name refers to the leaves, which are shaped like the blades of a propellor.
Identification: These plants have
grayish green leaves and grow to about 12" (30 cm) tall (not counting the flower stalk). Leaves are succulent (thickened to store water),
sickle-shaped, up to 3½" (9 cm) x 1" (2.8 cm) in size. They are often spotted or edged with red, and
are edged with very small teeth. Flowers appear on a stalk about 20" (50 cm) in height, branching
into a rounded or flat-topped flowerhead. Flowers range from bright red to nearly white, described
by one source as a "bright red broccoli cluster." Individual
flowers are up to ¼" (7 mm) long.
Crassula perfoliata var. minor in flower. By Groogle. 3/18/2010.