Vernation

As vernation or Verna ion is referred to in botany the position of the leaves in the bud. The buds location is often specific to certain kinship groups.

We distinguish between the following types of buds Location:

• Circinat or spiral: the leaves are rolled from the tip to the base. This form occurs at about ferns.
• Conduplicat or merged: the leaves are folded along its midrib. An example is Prunus.
• Convolut or rolled: the leaves are rolled lengthwise as a whole.
• Involute or rolled: the lateral regions of the leaves are curled upward.
• Plane or flat: the leaves are flat, not rolled or folded.
• Plikativ or multiply folded: fan-shaped approximately in Alchemilla, longitudinal fold at about the plantains ( Plantago ).
• Revolut or rolled back: the lateral parts of the leaves are curled downward. Example is the genus of willow ( Salix).
• Wrinkled: example, the petals of poppies. (Papaver ).
• Umbrella-shaped: Example is Podophyllum.

When Spitzlappigen lady's mantle ( Alchemilla vulgaris) the plikative vernation also in the unfolded sheet is even hinted at.

Field Poppy (Papaver dubium ) with wrinkled vernation.

First, Linnaeus had used the term folatio, but later sat vernatio by the vernation if it was also partly used for the process of leaf unfolding.

Documents

• Gerhard Wagenitz: Dictionary of Botany. 2nd Edition, Spektrum Akademischer Verlag, Heidelberg, Berlin, 2003, pp. 344f. ISBN 3-8274-1398-2
• Schück, Schuck, vocal: Encyclopedia of tree and shrub species. Nikol, Hamburg 2002, p 552 ISBN 3-933203-53-8

• Sheet
• Plant morphology