. Essentials of botany. Botany; Botany. THE FLOWER OF THE HIGHER SEED-PLANTS 151 Usually, as in Fig. 98, this is only a slight enlargement of the flower-stalk, but in the rose (Fig. 102), the pond lily (Fig. 115), the magnolia, the Calycanthus, and a good many other familiar flowers it is large and con- spicuous. 180. The Perianth. — The sepals, or divi- sions of the calyx, are commonly green and somewhat leaf-like. The petals in showy flowers are of many colors, ranging all the way from violet to red. Either whorl of the perianth may be found to have assumed some very peculiar form, to carry
. Essentials of botany. Botany; Botany. THE FLOWER OF THE HIGHER SEED-PLANTS 151 Usually, as in Fig. 98, this is only a slight enlargement of the flower-stalk, but in the rose (Fig. 102), the pond lily (Fig. 115), the magnolia, the Calycanthus, and a good many other familiar flowers it is large and con- spicuous. 180. The Perianth. — The sepals, or divi- sions of the calyx, are commonly green and somewhat leaf-like. The petals in showy flowers are of many colors, ranging all the way from violet to red. Either whorl of the perianth may be found to have assumed some very peculiar form, to carry out the purpose of the flower, as is briefly explained pio. 102. in Chapter XVII. A Rose, Longi- Among the lower families of seed-plants tudinal Sec- with closed ovaries the parts of the perianth '°"' are frequently all distinct, as shown in Fig. 98. Among the higher families the members of the perianth are often borne upon a tubular or cuplike outgrowth from the receptacle, so that the sepals or petals or both appear to have grown together more or less completely.^ When the calyx or the corolla is borne upon a tubular, bowl-shaped, or other extension of the receptacle, there are often divisions, teeth, or lobes at the rim- of the tube show- ing how many sepals or petals the flower possesses. Special names are given to a large number of forms of the 1 When the parts of the perianth are distinct, the calyx is said to be chorisep- alous and the corolla choripetalous; other terms are polysepalous and poly- petalous. When the receptacle forms a cnplike or tubular outgrowth, so tliat the teeth or lobes of this alone are sepals or petals, the flower'is said to be syn- sepalous or sympetalous; other terms are gamosepaious or gamopeialous. Choris means apart, poly means many, syn means together, gamos means marriage. Botanists have until recently used such expressions as "sepals united into a tube," etc., but these are Please note that these images are ext
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