title: A rapid circadian rhythm of carbon-dioxide metabolism in Bryophyllum fedtschenkoi.
abstract: Leaves of Bryophyllum fedtschenkoi Hamet et Perrier maintained in a stream of normal air and at 15° C exhibit a circadian rhythm of CO2 uptake in continuous light but not in continuous darkness. The rhythm is unusual in that it persists for at least 10 d, and has a short period of approximately 18 h. The mechanism by which this rhythm is generated is discussed.
authors.affiliation: Botany Department, Glasgow University, G12 8QQ, Glasgow, UK.
authors.forename: M B
authors.initials: MB
authors.lastname: Wilkins