laevifolia

Updated: June 20, 2025

Lacking the undulations, the laevifolia leaves are smooth and bright. They are a little narrower and more slender than those of the lamarckiana.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

This is considered by some writers to be of some utility after slight showers, but was observed to be a source of weakness during wet weather in my garden, preventing the leaves from drying. Whether the laevifolia would do better under such circumstances, remains to be tested. The flowers of the laevifolia are also in a slight degree different from those of lamarckiana.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

Varieties differ from their species clearly in one point, and this is either a distinct loss, or the assumption of a character, which may be met with in other species and genera. laevifolia is distinguished by the loss of the crinkling of the leaves, brevistylis by the partial loss of the epigynous qualities of the flowers, and nanella is a dwarf.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

The blade shows numbers of convexities on either surface, the whole surface being undulated in this manner; it lacks also the brightness of the ordinary evening-primrose or Oenothera biennis. These undulations are lacking or at least very rare on the leaves of the new laevifolia.

Hugo de Vries - Species and Varieties, Their Origin by Mutation