This paper studies the differences between domatia of normal leaves of Capsicum annuum L. and leaves of plants cultivated with deficiencies of N, Ca, F, Mg, S e P. Were studied 1273 leaves, of all ages, 226 of them being leaves of normal plants. The domatia founded were of the type "en touffe de poils" according to the Chevalier's Classification (1941) and theirs variations, localizated on the dorsal side of the limb, on the axil of midrib with the secondaries oves. The principal modification was that in the normal leaves the hairs (trichomes) were longer, waver and thicker than those of deficient plants.