hirtella

Updated: June 24, 2025

I have crossed another elementary species, the Oenothera hirtella with some of my new and with some older Linnean species, and got several constant hybrid races. Among these the offspring of a cross between muricata and hirtella is still in cultivation. The cross was made in the summer of 1897 and last year I grew the fourth generation of the hybrids.

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

These had the characters of the muricata in their narrow leaves, but the elongated spikes and relatively large flowers of the hirtella parent, and remained true to this type, showing only slight fluctuations and never reverting or segregating the mixed characters.

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