Abstract

AbstractAxenically cultured shoots of four Sphagnum species were grown in aqueous solutions in which the concentrations of ions and of dissolved carbon dioxide were varied. Hyaline cell length was related directly to carbon dioxide concentration, and related inversely to the concentrations of nitrogen and phosphorus. The lengths of hyaline and chlorophyllose cells were closely correlated with each other and with leaf length. Short leaves contained very few hyaline cells, and those present were poorly differentiated. It is proposed that the open network of chlorophyllose cells which results from hyaline cell differentiation is a scavenging system for certain inorganic ions present at low concentrations in the surrounding aqueous environment.

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