Elementary botany . Fig. tundra with scattered flowers, Alaska. (Copyright by E. H. Harriman.) fact that during the summer while the plants are growing they Vs &~TA msBSg^*. Fig. rosette plant from alpine flora of the Andes, showing short stem,rosette of leaves, and large flower. (After Schimper.) are subject to a high temperature during the day and a very low PLANT SOCIETIES. 483 temperature at night, whereas during the summer in arctic regionswhile the plants are growing there is continuous warmth for growthand continuous light for photosynthesis. Five types of alpine
Elementary botany . Fig. tundra with scattered flowers, Alaska. (Copyright by E. H. Harriman.) fact that during the summer while the plants are growing they Vs &~TA msBSg^*. Fig. rosette plant from alpine flora of the Andes, showing short stem,rosette of leaves, and large flower. (After Schimper.) are subject to a high temperature during the day and a very low PLANT SOCIETIES. 483 temperature at night, whereas during the summer in arctic regionswhile the plants are growing there is continuous warmth for growthand continuous light for photosynthesis. Five types of alpineplants are recognized by some. 1st. Elfin tree. This type hasshort, gnarled, often horizontal stems, as seen in pines, birches,and other trees growing in alpine heights. 2d. The alpine the highest alpine belts they are dwarfed and creeping, richlybranched and spreading close to the ground, while at lower beltsthey are more like lowland shrubs. 3d. The cushion branching is very profuse and the branches are short andtouch each other on all sides, forming compact masses (examplessaxifrages, androsace, mosses, etc.). 4th. Rosette plants. Theseare perennial, shor
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Keywords: ., bookauthoratk, bookcentury1900, bookdecade1900, booksubjectbotany
