Having surveyed the various types of inorganic patterns, whether rectilinear or curvilinear, we now come to the consideration of those which are not only derived from vegetable ornament, but still preserve, in greater or less degree, a naturalistic character. To begin with the simple leaf-ornament, which is of too conventional a type to associate with any particular plant, this occurs most frequently in the form of of a _calyx_, placed round the lower part of the body, immediately above the foot, so that the leaves radiate from the foot, pointing upwards.[2031] This ornament begins at a very early period, and is found in most fabrics, continuing down to the latest stages. It is, however, specially associated with the B.F. period, in which it is invariable on the large vases with a more or less marked stem, the amphorae, hydriae, and kraters. On the smaller ones, however, it does not occur. In the “affected” B.F. amphorae (Vol. I. p. 388) the calyx is double, with two tiers of rays.[2032] An arrangement of four leaves saltire-wise in a panel sometimes occurs on the Geometrical vases, a remarkable instance of vegetable ornament in this style (cf. Vol. I. p. 282); an analogous pattern is also found on many early Corinthian aryballi (Vol. I. p. 314; B.M. A 1086 ff.), the leaves not being united at the base, and usually interspersed with reticulated or other motives. [Illustration: FIG. 154. LEAF- OR CHAIN-PATTERN.] Another form of leaf-pattern is of rare occurrence, and is found now and then on Attic vases; in this small leaves are joined together in a sort of ribbon or chain-pattern[2033] (Fig. 154). The peculiarity of this ornament is that even in the B.F. period it is red-figured in technique, being left in the colour of the clay with a background of black. [Illustration: FIG. 155. IVY-WREATH (B.F. PERIOD).]