F glaucscens,
Notocactus uebelmannianus

Karwinskiana has mostly white spines and white hairs in axils.

Mammillaria centricirrha (?)
M columbiana (?)
M discolor "Ginza Maru"

G anisitsii indeed

Mammillaria zeilmanniana albiflora

2nd is Notocactus horstii

Hola! Epiphyllum is a real treasure with its beautiful flowers of different colours, I think, forest cacti, plants from southern Mexico, Carribean and tropical Brazil will grow very nice in your climate.

A ferox or marlothii but right name is possible to get only with inflorescence. IMHO

I'd begin to collect Blossfeldia though...

Cereus peruvianus f. monstrosa

... Malacocarpus/Wigginsia's are close to Notocactus with similar flowers but usually have more pronounced ribs. And long soft fruits -> hence Malaco - carpus . Jorge, Parodia was named after a person called D. Parodi. ... Domingo Parodi, fue un naturalista y farmacéutico italiano, activo en Sudamé...

Thank you DaveW... First time I've heard about Malacocarpus genera :shock: I prefer notocactus, parodia means in Spanish parody, and I don't like that for naming a plant :mrgreen: Regards, Jorge Malacocarpus = Wigginsia I also prefer Notocactus, Eriocactus, Brasilicactus and Wigginsia because there...

M. bravoae?

I never spray cacti because they aren't orchids neither bromeliads, no practical use at all.
I water them when they are moved to greenhouse and temps are high enough, never give them "some drops" but good amount of water. Better later and much than earlier and little.

Nyctocereus serpentinus f. cristata??
Mammillaria haageana/elegans? geminispina? crucigera?