SOTOI Rosales & Quirarate, 2024
First published in Phytotaxa 633 (2): 125-137, 2024.
Note :
The comparison with E. longiflora Walther is pointless because this plant has no Mexican origin and may even have been a hybrid and in any case is not extant any longer.
For details see p. 167-168 in Revision of Walther's monograph Echeveria, 1972.