Echinopsis werdermannii

Echinopsis werdermannii is a species of Echinopsis found in Paraguay.

Description
Echinopsis werrmannii grows singly. The spherical, gray-green shoots reach diameters of up to 12 cm and heights of up to 8 centimeters. There are ten to twelve straight and sharp-edged ribs. The single black central spine is up to 0.2 cm long. The three to eight radial spines are blackish.

The long, tube-shaped, funnel-shaped flowers are light pink. The flowers are up to 20 centimeters long.

Distribution
Echinopsis werdermannii is found in Paraguay.

Taxonomy
The first description by Zdenĕk Fleischer was published in 1962. Zdenĕk Fleischer attributed the name to the Czech Alberto Vojtěch Frič. However, according to Article 8.4 of the International Code of Botanical Nomenclature, Echinopsis werrmannii has not been validly published because the type specimen on which the first description is based has not been permanently preserved, for example through a herbarium specimen.