Dyckia fosteriana L.B.Sm.

Literature references:

Baensch & Baensch 1994: 32,33,152 Bromtravels (Web) BSA (Web) FCBS (Web) Foster 19??: fig.2 Oliva-Esteve 2002: 195 Padilla 1966: 79b Padilla 1973, 1986: 113 Parkhurst 2000: 142 Rauh 1981, 1990: Abb. 336 , 337 Richter 1962, 1978: 12c Smith & Downs 1974: 531 Smith 1943: 1:t106 Steens 2003: 86 Tropiflora Cargo Rep: 14(3) Wilson & Wilson 1963: 71d,101 Wilson 1977: 43 Zimmer 1986: 98b