What a wide variety of conophytums you have shown. How many different types are you growing Alain? Unfortunately, I don't have Steven Hammer's book. Thought about getting it, although I don't grow any conos at present. Wonderful large flower on C. herreanthus. Very nice.
I have never counted how many Conos I grow. Often there is great variation in one species and different collection numbers so a great opportunity to grow a selection that appeals even of one species. I have a lot of pellucidums. I like books and have both Steven Hammer's Cono. books. I hear mutterings about moving herreanthus from Conophytum but I do not know where.