Nutation (botany) flowers to open or close by movements which resemble the simple nutation of dorsiventral organs. Thus, the tulip, crocus, and other vernal flowers are very sensitive to changes in temperature. The crocus can perceive a change of 0.5°C (0.9°F), and will respond to a change of 20°C (36°F) in two minutes. Nutation (botany) Nutation is the bending movements executed by some plant organs, such as stems, leaves, roots, etc., by which the part is inclined successively in various directions. Nutations are due to the unequal rate of growth of different sides of the organ, an inequality which, so far as
Annals of Botany two volumes before ceasing. Annals of Botany Annals of Botany is a monthly peer-reviewed scientific journal, founded in 1887, that publishes research articles, brief communications, and reviews in all areas of botany. The journal is supported and managed by Annals of Botany Company, a non-profit educational charity, and published through Oxford University Press. According to the 2011 "Journal Citation Reports" it has an impact factor of 4.041, in 2016 ranking 22nd out of 211 in the category Plant Sciences. There was an earlier periodical "Annals of Botany" edited by Carl Dietrich Eberhard König (Charles Konig) and John Sims which started