Petal spur development in Centranthus

Petal spur development in Centranthus

Petal spur development in <i>Centranthus</i>
Petal spur development in Centranthus

When concealed by petal spurs, nectar typically is restricted to flower-visiting animals possessing a sufficient tongue length to acquire it, and thus such spurs have evolutionary significance, often leading to speciation. Mack and Davis microscopically examine petal spur growth in Centranthus ruber and find that cell divisions dominate very early in development but it is cell elongation that leads to attainment of the spur’s final length. This pattern corroborates recent studies in Aquilegia and Linaria, inferring the existence of a common underlying mechanism for petal spur ontogeny in distant lineages of dicotyledons.


The Annals of Botany Office is based at the University of Oxford.

Read this in your language

The Week in Botany

On Monday mornings we send out a newsletter of the links that have been catching the attention of our readers on Twitter and beyond. You can sign up to receive it below.

@BotanyOne on Mastodon

Loading Mastodon feed...