Thelocactus conothelos var. macdowellii (Rebut ex Quehl) Glass & R.A.Foster in Cact. Succ. J. (Los Angeles) 49: 220. 1977.

Nomenclatural References

• person : Charles Edward Glass (1934-1998) Based on occurrence of standard abbreviation 'Glass' in the authors string.
• person : Leopold Quehl (1849-1922) Based on occurrence of standard abbreviation 'Quehl' in the authors string.
• person : Pierre Rebut (1827-1898) Based on occurrence of standard abbreviation 'Rebut' in the authors string.
• person : Robert Alan Foster (1938-2002) Based on occurrence of standard abbreviation 'R.A.Foster' in the authors string.