Mammillaria bertholdii

A rare offer of a very crytpic new Mammillaria species (described in 2014), the plants grow mostly underground as can be seen in the last picture. They have cryptocarpic fruits and are therefore extremely difficult to reproduce, even when seeds are able to be harvested they need to be treated with sulphuric acid for them to germinate. These plants are around 5 years old from seed and are 100eu for both. Shipping is 22eu, documents for safe shipping worldwide are 60eu.