Stone-Crop, or Sedum, L, a genus of perennial plants, comprising 31 species, 9 being indigenous; of which the following are the most remarkable :

1. The Telephium, or Orpine Stone-crop. See Orpine, the Common.

2. The acre, Wall-pepper, Biting, or Pepper Stone-crop, grows on the surface of walls, roofs, rocks, and in dry pastures ; flowers in June or July. This vegetable is eaten by goats, but refused by horses, cows, and sheep. It continues to vegetate, while suspended in a chamber : being very acrid, if applied externally, it excites blisters ; but, when taken internally, occasions vomiting. - According to Dr. Withering, it is an excellent remedy in scorbutic cases, and in quartan agues : a table spoonful of its expressed juice operates powerfully as a purgative. At present, however, it is seldom employed; though, on account of its active properties, the wall-pepper promises to be an useful medicine, when administered with judgment.

3. The reflexum, or Yellow Stone-crop, thrives on walls, roofs, and rocks, where its bright yellow flowers appear in July.

4. The rupestre, or ROCK STONE-Crop, grows principally on St. Vincent's rock, near Bristol, and on the Chedder hills, in Somersetshire. It differs from the preceding species only in its smaller flowers, which likewise blow in July.

Both vegetables, last mentioned, having an agreeable, pungent taste, are cultivated in Holland and Germany, where they are esteemed as ingredients in salads. They may be easily propagated, by planting either their roots, or the cuttings of the shoots in a moist soil, where they will readily take root, and spread with great luxuriance.