plants, averaging only an inch or an inch and a half in height, and consist simply of a pair of closely united, fleshy, fiat-topped leaves separated by a cleft In nature these plants are buried among rocks and pebbles so thai only their tops are visible, and on these tops, or Stone Faces, each species is distinctively windowed, marked, and colored to blend with its surroundings. Some lithops are solitary, some clustering, but all produce surprisingly large flowers an inch or more in diameter in autumn. After flowering and seeding, the plants become dormant and wither, whiten and break open, ami a fresh pair of leaves emerge to form a new plant body for the coming year. It is well-nigh impossible to mention all the wonde fui species and varieties available, but no collection should miss L. aucampiae, a ather large, brick-red species with yellow blossoms; L bella, a handsome yellow-brown species with white flowers; L comptonit. olive green with yellow flowers; L. fulleri, pearl gray and brown with white (lowers: L ¡esjiei, olive brown and rust with yellow blooms; and, best of all, L pseudo truncal e!lat a fine beige-gray and brown plant with golden-yellow flowers*
In some ways the genus Conophytum (ko-nof'-i-tumi resembles Lithops, but in many more it differs from it. All its two hundred and fifty or more species are formed of two fleshy leaves, but these leaves are completely united and only a short slit is left at the top for flowering, lis plant bodies are of three different forms; rounded, cone-shaped with a flat top, or fiat-sided with a bilobed top. They range from pea size to four inches in length and form clusters of several to many heads. The conophytums, or Cone Plants, do not bury themselves, but owe their invisibility entirely to their shape and color, which resemble the grayish, veined, and marbled pebbles among which they grow. Their autumn flowers have a greater range o: color—white, cream, yellow, orange, red pink, and purple—and their petals are united at the base into a slender tube so that each flower stands like a little umbrella
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