. The elements of botany for beginners and for schools. Plants. ing, as In Fig. 344. The chalaza is at the insertion or base ; the foramen or oritice is at the apex. This is the simplest, but the least common kind of ovule. Campylotropous or Incurved, in whicb, by the greater growtli of one side,. the ovule curves into a kidney-shaped outline, so bringing the oritice down close to the base or chalaza; as in Fig. 345. Amphitropom or Half-Inverted, Fig. 346. Here the forming ovule, instead of curving perceptibly, keeps its axis nearly straight, and, as it grows, turns round upon its base so far
. The elements of botany for beginners and for schools. Plants. ing, as In Fig. 344. The chalaza is at the insertion or base ; the foramen or oritice is at the apex. This is the simplest, but the least common kind of ovule. Campylotropous or Incurved, in whicb, by the greater growtli of one side,. the ovule curves into a kidney-shaped outline, so bringing the oritice down close to the base or chalaza; as in Fig. 345. Amphitropom or Half-Inverted, Fig. 346. Here the forming ovule, instead of curving perceptibly, keeps its axis nearly straight, and, as it grows, turns round upon its base so far as to become transverse to its funiculus, and adnate to its upper part for some distance. Therefore in this case the attachment of the funiculus or stalk is about the middle, the chal- aza is at one end, the oritice at the other. Anatropous or Inverted, as in Fig. 347, the com- monest kind, so called because in its growth it has as it were turned over upon its stalk, to which it has continued adnate. The organic base, or chalaza, thus becomes the apparent summit, and the. 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 Gray, Asa, 1810-1888. New York : American Book Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectplants, bookyear1887
