. Foundations of Botany. Botany. Fig. 142. A Rose, Longitudi- nal Section. portions of the limb are known as divisions, teeth, or Special names of great use in accurately describing plants are given to a large number of forms of the gamo- petalous corolla. Only a few of these names are here given, in connection with the figures. When the parts of either circle of the perianth are wholly unconnected with each other, that is, polysepalous or polypetalous, //\J: such parts are said to be distinct. HI) 214. Parts of the Stamen and the Pistil. — The stamen usually consists of a hollow porti
. Foundations of Botany. Botany. Fig. 142. A Rose, Longitudi- nal Section. portions of the limb are known as divisions, teeth, or Special names of great use in accurately describing plants are given to a large number of forms of the gamo- petalous corolla. Only a few of these names are here given, in connection with the figures. When the parts of either circle of the perianth are wholly unconnected with each other, that is, polysepalous or polypetalous, //\J: such parts are said to be distinct. HI) 214. Parts of the Stamen and the Pistil. — The stamen usually consists of a hollow portion, the anther (Fig. 149, a), borne on a stalk called the filament (Fig. 149,/), which is often lacking. Inside the anther is a pow- dery or pasty substance called pollen or microspores (Sect. 374). The pistil usually consists of a small chamber, the ovary, which contains the ovules, macrospores (Sect. 374), or rudimentary seeds, a slen- der portion or stalk, called the style, and at the top of this a ridge, knob, or point called the stigma. These parts are all shown in Fig. 150. In many pistils the stigma is borne directly on the ovary. 215. Union of Stamens with Each Other. —Stamens may fig. m-Flowers of wniow. u (Magnified.) be wholly Unconnected with j,staminate flower ; B, pistillate flower. 1 It would not be safe to assume that the gamosepalous calyx or the gamo- petalous corolla is really formed by the union of separate portions, but it is very convenient to speak of it as if it 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
Size: 1710px × 1461px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
