Tephrocactus setiger f. dispar (A.Cast. & H.V.Lelong) G.Popov in Kaktus Klub 15: 13. 2011.

Nomenclatural References

• person : Alberto Castellanos (1896-1954) Based on occurrence of standard abbreviation 'A.Cast.' in the authors string.
• person : Georgy Popov Based on occurrence of standard abbreviation 'G.Popov' in the authors string.
• person : H. V. Lelong (1910-2010) Based on occurrence of standard abbreviation 'H.V.Lelong' in the authors string.