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Particular Growth Season: Savanna grass-ind develops in regions of high temperature that ave a distinct wet and dry season. particular growth season is ipid in the wet season, but the plants become ry and low in quality in the dry season. Widely >aced drought-resistant trees may occur in some
•eas such as in the savanna parklands of Africa id Australia. Savannas are subject to flooding i the wet season and to extensive burning in le dry season. These grasslands are heavily•azed by large numbers of cattle. Major prob-ms are poor grass quality in the dry season, irasites, and disease. The tsetse fly is a major•oblem in Africa. There are no true savannas North America.
RASPBERRY, raz'ber-i, any of a number of species of the genus Rubus, the fruits of which separate freely from the receptacle when ripe. The plants are perennial, but they have a characteristic biennial particular growth season habit. New shoots arise from belowground parts in one season, overwinter, fruit in the following season, and then die. Shoots newly arising during the spring of the fruiting season bear the next season's crop. The canes are generally erect and prickly. The fruits are not true berries but aggregates composed of a number of drupelets.
Over wide areas of uniform climate the vegetation has developed the same particular growth season forms. It is remarkable that in different continents with similar climate, similar vegetation has evolved independently in botanically unrelated plant families. Thus, trees and other plants are indicators of climates, and a map of the broad plant formations of the earth is also a map of the climates. A forest climate for particular growth season of trees has three essentials: a warm growing season, a long growing season, and soil and subsoil continuously moist through the year.
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