. The essentials of botany. Botany. GBOSS ANATOMY OF FLOWERING PLANTS, xli B. FRUITS, formed by tlie gynoecia of several flowers. 1. A spike with fleshy bracts and perianths— Mulberry Sorosis. 2. A spike with dry bracts and perianths— , Birch Strobile. 3. A concave or hollow, fleshy receptacle, in- closing many dry gynoecia—, Pig . Syconus. §7. The Seed. The seed is the ripened ovule, and as the ovule consists of a lody, surrounded by one or two coats, or integuments, we may look for a like structure in the seed. However, the ,,, modifications which most seeds unde
. The essentials of botany. Botany. GBOSS ANATOMY OF FLOWERING PLANTS, xli B. FRUITS, formed by tlie gynoecia of several flowers. 1. A spike with fleshy bracts and perianths— Mulberry Sorosis. 2. A spike with dry bracts and perianths— , Birch Strobile. 3. A concave or hollow, fleshy receptacle, in- closing many dry gynoecia—, Pig . Syconus. §7. The Seed. The seed is the ripened ovule, and as the ovule consists of a lody, surrounded by one or two coats, or integuments, we may look for a like structure in the seed. However, the ,,, modifications which most seeds undergo ;v^ \\i \ll a render necessary some additional terms. Thus ^^^w \ |i the outer integument is generally so thick- \w« ened and hardened that it is commonly called '^ the testa. The inner is sometimes called the tegmen. In some seeds the outer coat be- comes fleshy, in which case they are baccate (berry-like); in others the outer part of the testa is fleshy and the inner hardened, so that the seed is drupaceous (drupe-like). Occa- sionally an additional coat forms around the ovule after fertiliza- tion; it differs somewhat in nature in different plants, but all are commonly included under the name aril— in May- apple. The testa may be prolonged into one or more flat extensions; such a seed is zoinged—, Catalpa. Its epidermal cells may be prolonged into trichomes, forming the comose seed—, milk- weed (Fig. XLIII).. Fie. XLIII, seed of Milkweed Comose. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bessey, Charles E. (Charles Edwin), 1845-1915. New York, Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1884
