. The elements of structural botany [microform] : with special reference to the study of Canadian plants ; to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. fjo ELEMENT!:. OF STRUCTJIIAL I Fig. 100). If, as i. Shepherd's Purse (Fig. 29), the capsule is short and broad, it is ^if^ called a sUlcle. If the capsule opens ^^ hor{z())itaUi/, so that the toj) coDies X/ off like a lid, as in Purslane (Fig. Fig. 101. 161), it is a pyxis. 150. Any dry, one-seeded, indehlscent fruit is called an achene, of which the fruit of Buttercup (Fig. 14) is an
. The elements of structural botany [microform] : with special reference to the study of Canadian plants ; to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. fjo ELEMENT!:. OF STRUCTJIIAL I Fig. 100). If, as i. Shepherd's Purse (Fig. 29), the capsule is short and broad, it is ^if^ called a sUlcle. If the capsule opens ^^ hor{z())itaUi/, so that the toj) coDies X/ off like a lid, as in Purslane (Fig. Fig. 101. 161), it is a pyxis. 150. Any dry, one-seeded, indehlscent fruit is called an achene, of which the fruit of Buttercup (Fig. 14) is an exampleo In Wheat the fruit differs from that of Butter- cup in having a closely fitting and adherent pericarp. Such a fruit is called a caryojAsis or grain. A nut is usually syncarpous, with a hard, dry peri- carp. A wintjed fruit, such as that of the Maple (Fig. 102), is called a samara or key. 157. The Seed. The seed has already been de- scribed as the fertilized ovule. It consists of a nucleus, enveloped, as a rule, in two coats. The outer one, which is the most important, is known as the testa. Occasionally an additional outer coat, called an aril, is found. In the Euonymus of Canadian woods, the aril is j)articularly prominent in autumn, owing to its bright scarleii colour. The stalk, by which the seed is attached to the placenta, is i\iQ funiculus, and the scar, formed on the testa where it separates from the seed-stalk, is called the hilum. In the Pea and the Bean this scar is very distinct. 158. Germination of the Seed. When a seed is lightly covered with earth, and supplied with warmth and moisture, it soon begins to swell and soften, owing ho the absorption of water, and presently bursts its 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 Spotton, H. B. (Henry Byron), 1844-1933. Toronto
Size: 817px × 3057px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, booksubjectbotany, booksubjectplantanatomy
