Brevifolia and marnier-lapostollei produced many different looks, as Brasília which bears red/blood spines,
Chão de Estrelas and the notorious platyphylla. Yes, platyphylla is a hybrid!!! It was never, never found in nature. It is a plant found under cultivation in Rio Grande do Sul and produced by an accidental cross among brevifolia and marnier-lapostollei plants.
The idea a hybrid Dyckia does not breed true is not always correct. Some hybrids breeds true and some true species may present variations in their breeds.
For now please listen to this.
I love this tune and satchmo (Satch Mouth). No male voice compares to his.
He loved Latin America music and we all loved him.