. Elementary botany . Botany. 48 GYMNOSPERM^. kinds (see p. 24). At the end of each active vegetative season the terminal bud (is) of the main stem (or of a lateral long-shoot (/,V)) enters into a resting condition, and close beneath it the axillary buds form a whorl-like collection of scaly resting buds. These terminal buds, and the lateral ones (excepting such as develop into cones), grow out in the following year to form long-shoots. Consequently, the number of false whorls of long-shoots denotes the number of years of growth of the stem which bears them; it is, however, necessary to add th
. Elementary botany . Botany. 48 GYMNOSPERM^. kinds (see p. 24). At the end of each active vegetative season the terminal bud (is) of the main stem (or of a lateral long-shoot (/,V)) enters into a resting condition, and close beneath it the axillary buds form a whorl-like collection of scaly resting buds. These terminal buds, and the lateral ones (excepting such as develop into cones), grow out in the following year to form long-shoots. Consequently, the number of false whorls of long-shoots denotes the number of years of growth of the stem which bears them; it is, however, necessary to add three to the number thus obtained if we wish to calculate the age of a tree, because no false whorls are formed till the end of the third year of the life of the main stem. In fig. 62 the part of the stem above the top whorl of branches, and opposite i. is a one-year- old stem; that part (11.) be- tween the uppermost whorl and the second whorl is a two-year-old stem, and so on. Inflorescence and Flowers. —The staminate and carpel- lary flowers have been described on page 44. They arise in the axils of scale-leaves on the long-shoots. (Consult fig. 62.) The open flowers are found only on the young shoots of the current year. The car- pellary flowers (c, cP) are small erect lateral cones, often two or three together, immediately behind the terminal bud of the long-shoot. They occupy positions similar to the lateral buds which would grow out to form long-shoots. But the staminate flowers ini) are in- serted laterally on the more long-shoots of the current year — that the uppermost false whorl of. Fig. 63.—Vertical section of staminate flower of Scotch Pine. Fig. 64.—Stamen of ditto. basal parts is, they are of the just above. 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 Groom, Percy, 1865-1931. London
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1898
