THE leaves of plants which are found growing in dry situations often show certain structural characteristics in common—thick-walled tissues, thick cuticles, stomata sunken below the surface, etc. These structural features seemed likely to cut down the loss of water from the leaf, and therefore, with little experimental investigation, they have been classed as adaptational mechanisms against water loss and spoken of as ‘xeromorphic’. Of recent years the experiments have been carried out which should properly have preceded the adoption of any such interpretation of these characteristic structures.
Journal of Ecology, vol. 19, Aug. 1931.
Die Naturwissenschaften, Aug. 14, 1931.
"Die physikalische Komponente der pflanzlichen Transpiration", 1929. See NATURE, 124, 293, Aug. 24, 1929.
Ber. Deutsch. Bot. Ges., 48, 130–140: 1930.