ammotropha

Updated: May 28, 2025

First of all we may mention three perennial forms called by him Viola tricolor ammotropha, V. tricolor coniophila and V. stenochila. The typical V. tricolor is an annual plant; sowing itself in summer and germinating soon afterwards. The young plants thrive throughout the latter part of the summer and during the fall, reaching an advanced stage of development of the branched stems before winter.

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

V. tricolor ammotropha is native near Ystad in Sweden, and the other two forms on Gotland. All three have narrowly limited habitats. The typical tricolored heartsease has remained annual in all its other subspecies. It may be divided into two types in the first place, V. tricolor genuina and V. tricolor versicolor.

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