telmateja

Updated: April 30, 2025

But sometimes these dimorphic species are seen to revert to the primary condition, developing a fertile cone at the summit of the green summer-stem. I have had the opportunity of collecting an instance of this anomaly on the tall Equisetum telmateja in Switzerland, and other cases are on record in teratological literature.

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

Both seem to be of rare occurrence, as I have not succeeded in getting any repetition by prolonged culture. Species, which generally bear their leaves in whorls, are also subjected to casual atavisms of this kind, as for instance the tall European horsetail, Equisetum Telmateja, which occasionally bears cones on its green summer stems.

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