Plants and their ways in South Africa . o burst forth. Solong have they been storing food,that no wonder spring comes with aburst. On the main branch, Fig. 41, are the scars of lastyears leaves, ^, and just above each one a scar tells wherethis years flower-stalks were borne. Just above these scarsat the end of the branch c was a bud covered with scales. Afterthe flower-buds burst, this bud began to grow. When thescales fell away they left narrow scars close together. By thesescars we may tell how much growth has taken place in aseason. The branch at the left has four flower-buds, and abud at
Plants and their ways in South Africa . o burst forth. Solong have they been storing food,that no wonder spring comes with aburst. On the main branch, Fig. 41, are the scars of lastyears leaves, ^, and just above each one a scar tells wherethis years flower-stalks were borne. Just above these scarsat the end of the branch c was a bud covered with scales. Afterthe flower-buds burst, this bud began to grow. When thescales fell away they left narrow scars close together. By thesescars we may tell how much growth has taken place in aseason. The branch at the left has four flower-buds, and abud at the end to continue the growth. The ring of scars atthe base shows that a bud was there last year. The oak branch in Fig. 42 began its growth this year at a. 38 Plants and their Ways in South Africa The leaves unfolded along the branch above about the sametime that the catkins were hanging their pink-and-green tasselsof flowers at c, c. The branch a-b rested in its growth until theacorns had set just below. After they were well formed,. Fig. 41.—Twig showing leaf scars and buds of poplar. the resting bud unfolded, and the summers growth commencedat b. If the oak has two periods of growth during the season,in estimating the age of a branch a years growth will includethe distance between three bud-scars. Notice the terminal Growth of Buds and Branches 39 bud of a vigorously growing branch. Determine what part ofthe leaf protects the tip of the stem. The terminal bud of a fig and of the magnolia is coveredby one pair of large stipules that are formed at the base ofeach leaf. They fall off quickly and leave their scar encirclingthe stern. Do any other trees have similar scales ? What pro-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1915
