. 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; Botanique; Botanique. -t'i^,'- 100. (Fig. IGO). If, as iu Shepherd's Purse (Fig. 29), the capsule is short and broad, it is called a sHich. If the capsule opens /iorizo)ital/i/, so that the top comes off like a lid, as iu Purslane (Fig. 161), it is a pj/xis. 150. Auy dry, one-seeded, indchisccnt fruit is called an achene.^ of which the fruit of Buttercup (Fig. 14) is an example. In Wheat the fruit difl'ers
. 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; Botanique; Botanique. -t'i^,'- 100. (Fig. IGO). If, as iu Shepherd's Purse (Fig. 29), the capsule is short and broad, it is called a sHich. If the capsule opens /iorizo)ital/i/, so that the top comes off like a lid, as iu Purslane (Fig. 161), it is a pj/xis. 150. Auy dry, one-seeded, indchisccnt fruit is called an achene.^ of which the fruit of Buttercup (Fig. 14) is an example. In Wheat the fruit difl'ers from that of Butter- cup in liaving a closely fitting and pericarp. Such a fruit is called a caryojhsis or grain. A nut is usually syucarpouB, with a hard, dry peri- carp. A winfjCAl fruit, such as that of the Miijile (Fig. 1G2), is called a samara or key. 157. The Seed. The seed has already been de- scribed us the ferfiUzcd ovule. It consists of a nucleua, enveloped, as a rule, in two coats. The outer one, which is the most important, is known as the testa. Occasionally an aviditional outer coat, called an aril^ is found. In the Euonymus of Canadian woods, the aril is particularly prominent in autumn, owing to its bright scarleti colour. Tlie stalk, by which the seed is attached to the placenta, is the funiculus, and the scar, formed on the testa where it separates from the seed-stalk, is called the Jdlum. In the Pea and the Beau this scar is very distinct. 158. Germination of the Seed. Whenaseedis lightly covered with earth, and supplied with warmth and moisture, it soon begins to swell and soften, owing to the absorption of water, and presently bursts its. â idtfHibaaab^^ii^HttMidi^w. 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; Winnipeg :
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
