. Plant studies; an elementary botany. Botany. 190 PLANT STUDIES drouth it is very com- mon for plants to diminish the exposed surface in a very de- cided way. In such cases tliere is wliat may be called a peri- odic surface decrease. For example, annual plants remarkably diminisli their ex- posed surface at the period of drouth by being represented only Ijy -well-pro- tected seeds. The whole exposed sur- face of the plant, root, stem,and leaves, has disappeared, and the seed preserves the plant tlirough the drouth. Little less remark- able is the so-called geophilous habit. In this case the w
. Plant studies; an elementary botany. Botany. 190 PLANT STUDIES drouth it is very com- mon for plants to diminish the exposed surface in a very de- cided way. In such cases tliere is wliat may be called a peri- odic surface decrease. For example, annual plants remarkably diminisli their ex- posed surface at the period of drouth by being represented only Ijy -well-pro- tected seeds. The whole exposed sur- face of the plant, root, stem,and leaves, has disappeared, and the seed preserves the plant tlirough the drouth. Little less remark- able is the so-called geophilous habit. In this case the whole of the i>lant surface ex- posed to the air dis- appears, and only underground parts, such as bulbs, tubers, etc., persist (see Figs. 45, 4(;, GO, 07, OS, 00, 70, 75, 144, lOS, WJ). At the re-. Fiii. KIN. The bliKHlrodt. {Siiiiiiiii"<ir'Lirf!ice.—Al'ttT Atkin, i\'('s and. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
