1576. This separation can only be attained through the influence of the air and light, whereby the sexual organs are conditionated. These plants have therefore the several organs of the trunk and blossom. 1577. Anthers can be wanting to none of the following plants. Now, the anthers are leaf-buds; the leaf-formation must be therefore developed also in their antagonism, or in the seed. The leaves of the seed, however, are called seed-lobes; consequently all seeds of sexual plants have seed-lobes or cotyledons. 1578. Now the perfect seed is the whole plant in miniature with root, stalk, and leaf. This formation is, however, only possible where there is a sex, or where the vegetable tissues have emerged self-substantially from each other. 1579. But the anthers are buds upon a floral rib; consequently all sexual plants must have a part of the blossom, which ranks in the signification of leaf, and thus either the calyx or, with this also, the corolla. 1580. All sexual plants must have a shaft or scape, in which its three parts, bark, liber, and wood, are to be distinguished; even so must the three parts of the stem, the root, stalk, and leaf, have the parts of the blossom which correspond to them, viz. seed, ovarium, and calyx or corolla. 1581. The sexual plants next divide into Stock-and Blossom-plants, the former of these parting into Shaft-and Stem-plants. _Second Province._ SHAFT-PLANTS--MONOCOTYLEDONES. 1582. In the Shaft-plants the invaginate character is predominant, the wood being surrounded by liber, and this by bark; they are therefore tubular in form--_tubular plants_. 1583. The cellular tissue preponderates in them, and the tracheal fascicles form therefore no closed circle, but are dispersed; scattered fasciculi cannot, however, ramify but only pursue a straight course and form streaks--_striated plants_. 1584. Ramification is wanting unto these plants, partly on account of their tubular form, partly on account of the smaller quantity of tracheal fascicles--_aramose plants_. A vegetable stem without branches is called shaft or scape; thus they are _shaft-plants_. 1585. The blossoms do not stand upon ramules, but upon the stem itself; thus, if ever ramification originates, it can first occur in the floral peduncles. 1586. As they are deficient in branches, so also are they in buds--_agemmal_ or _budless plants_. 1587. The tendency to produce branches forms nodes, which are only imperfect ramal zones--_nodose plants_. 1588. Where the formation of branches is wanting, the minor ramification of ribs must be also wanting in the leaves; they are parallel-ribbed. 1589. The leaf is only a ruptured and expanded tube or spathe, which surrounds the shaft--_spathose plants_. 1590. Where branches are wanting, there can be also no petiolated leaves; they have therefore only radical leaves, from the midst of which the shaft or scape sprouts forth, only as a floral-peduncle--_radical-leaved plants_.