Echinomastus unguispinus var. laui (G.Frank & Zecher) Glass & R.A.Foster in Cact. Succ. J. (Los Angeles) 51: 124. 1979.

Nomenclatural References

• person : Charles Edward Glass (1934-1998) Based on occurrence of standard abbreviation 'Glass' in the authors string.
• person : Ernst Zecher Based on occurrence of standard abbreviation 'Zecher' in the authors string.
• person : Gerhard R. W. Frank Based on occurrence of standard abbreviation 'G.Frank' in the authors string.
• person : Robert Alan Foster (1938-2002) Based on occurrence of standard abbreviation 'R.A.Foster' in the authors string.
• database : The Plant List version 1.0, record: kew-2783142
• database : The Plant List version 1.1, record: kew-2783142