12.Echinopis eyriesii, 13.Dolichothele longimamma, 14.Mammillaria centricirrha, 15.No
12.Echinopis eyriesii, 13.Dolichothele longimamma, 14.Mammillaria centricirrha, 15.Notocactus mammulosus, 16.Lobivia mistensis, 17.Rebutia minuscula, The Illustrated Guide to Cacti and Indoor Plants, B.Schonfelder and W.J. Fischer, 1972 -- source link
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