Picture taken today.
I have about 12 in a glass tray.
I think they are called Rebutia minuscula.

Starting page 8:
https://plants.jstor.org/search?si=176& ... ion%3AFLOS

Looks like some sort of pruning to me. Creating damage to stimulate growth.

Thanks Ralph for your post. i immediately checked the Dutch Government's website and it reads that books attract 9% VAT. Handling costs are usually about 5% so that makes it 14% not 25% as I wrote earlier. I am sure the shipping label should mention that books are inside.

Looking at the other copies of the book for sale on line I think you found the cheapest option. Amazon has one of Exotic Plants for $ 89, at Abebooks they start at $ 63, shipping not included. For both options you will have to add 25% VAT as they are shipped from outside of the EU.

My wife encourages me in all my hobbies. Only watching me shave with a straight razor gets her worried.

So that's why they don't buy 'm off ebay.

A fruit tree specialist I talked to recommends you take a bucketful of soil from an old forest or tree stand and add a spadeful to every planting hole. There is little proof mycorrhizal fungi work in non-natural environments. The soils we create for our plants are adapted to growing the plants where...

What happened to it?
He used to have a website: www.melocactus.net/ that does no longer seem to exist.

Chris L wrote: ↑Sun Jul 14, 2019 7:28 am

el48tel wrote: ↑Sat Jul 13, 2019 9:28 pm Update
Since my earlier post, my daughter has tried diatomaceous earth around some mealy bug infested plants ... they definitely don't like it and die!

Is that just scattered around the neck of the plant?

Anywhere you see them walk.