1591. If all these leaves be still sheathed or encased within each other, they are called bulbs--_bulbose plants_. 1592. Since the corolla is the repetition of the leaves, so also must its structure resemble theirs--_spathose corollæ_. 1593. But as there are here only radical leaves, so also is the corolla only a radical leaf-corolla. In the blossom, however, the radical leaf has become spathe, the cauline leaf, calyx, the ramuscular leaf, corolla. Such blossoms consist therefore either of a spathe only, as in the Aroideæ, or of a calyx--_calycine plants_. 1594. The stamina originate from the calyx. In calycine flowers therefore all the stamina must range opposite to the corolla-petals. These plants have only _opposite_, no _alternate stamina_. It has been generally assumed that the Monocotyledones have no true corollæ, but only coloured calyces. Philosophy agrees with this opinion; but adds thereunto that the corollæ of the Monocotyledones may be also merely spathes or involucra. 1595. The separation of the bud-formation here takes place for the first time in the blossom, namely, in the stamina. The number of the floral parts must be limited to three; for this is the first number, in which the leaf-ribs may divide. Corollæ, stamina, and capsules are ternary--_trinity-plants_. 1596. As the seed is only an undeveloped leaf-bud, so in it only can the number of the leaf be found. Since, however, the leaf does not ramify in the present group of plants, but is only a single spathose leaf; so also does the seed consist only of one such leaf or of one seed-lobe--_Monocotyledones_. The wheat-seed or grain is none other than a grass-leaf with a short spathe and very dense, highly farinaceous, lamellæ. In germinating a new leaf emerges from the short spathe; it is the germinal leaf. 1597. Thus plants having a tubular stem, and such kind of foliage, corollæ and seeds, are Monocotyledones. 1598. The chemical bodies are more diversified in these than in the remaining members of the vegetable kingdom. In the roots, as in the tubers of the Orchideæ we meet with distinct mucilage; in the bulbs with alkalies or acrid matter; and with sugar, as being a feeble conversion of the starch in the stalk. The mucilage of the root becomes, when repeated in the seed, flour. Oily matters or acids seldom occur, and fleshy fruits scarcely ever. 1599. The ovary is almost throughout this region of plants either a single spathose leaf or caryopsis; or three spathe-leaves are united together, which thus, as follicles or carpels, usually burst open upon the internal edge. DIVISION. 1600. If we now proceed to survey the Monocotyledons, in the order just set before us, we shall recognize among them three typical groups, to which the others are allied; they are the Gramineæ, Liliaceæ, and Palmaceæ. 1601. The Grasses obviously rank the lowest as well in respect of their root, stalk, and foliage, as also of their stunted blossoms, ovarium, and seeds.