Ech. amoena De Smet, Catalogue 1875 & La Belgique Horticole 25: 216, 1875
正名カナ:アモエナ Synonym:Ech. pusilla Berger (1904)Synonym:Ech. purpusii Britton (1905) (nom. illeg., Art. 53.1)Synonym:Ech. microcalyx Britton & Rose (1911)
原種。メキシコ、ベラクルス州、プエブラ産。群生種