so goood

Brasiliopuntia

Loph:
maybe trying tomake chimera?

yes but the chimera will be not good
like Myrtillocalycium
http://www.cactus-art.biz/schede/CHIMAE ... on_810.jpg
the mix of two plants and this will be not new specie, as they want to

very good grafts komsu

i think that you have good graft material
you have material for 3 times grafting:
1st - top
2nd - small cacti from cutted that will graw
3rd - if something going wrong you can graft and botton upside-down

uebelmannianus i`m wrong
but here is no because i ..
http://cactiguide.com/synonyms/?initial=P

it looks like Mammillaria schiedeana with white spines and not so compact
you can see older stem and the top of mammilla

i think that M.ekmanii is old name of M.nivosa
i have a friend in Botanical garden he is a specialist of cacti and succulents
he knows alot of Mammillarias
in his home he has over 1000 cacti and var.
here his albums
http://mammillaria.snimka.bg/

woohuuu :) http://www.pic4ever.com/images/mayi.gif how many people here is :P http://factoryjoe.s3.amazonaws.com/emoticons/emoticon-0123-party.gif http://factoryjoe.s3.amazonaws.com/emoticons/emoticon-0157-sun.gif http://l.yimg.com/us.yimg.com/i/mesg/emoticons7/6.gif http://www.pic4ever.com/images/b...

try in something smaller like substrate
sand about 2-3mm will be very good choice
i have the same problem

first Parodia is Notocactus uebelmanianus

i think that Parodia uebelmanniana is not Parodia microsperma for sure
http://cactiguide.com/cactus/?uname2=Pa ... elmanniana
here is a big error
parodia uebelmanniana there is no hooks

http://sciweb.nybg.org/Science2/hcol/na ... stvasc.asp

i like very much M.nivosa

the source of image is : http://www.cactiguide.com/forum/userpix/ 1457_toad_find_me_1.jpg

toad_find_me

it`s ceramsite i think

lithops numbers
http://www.lithops.info/en/gallery/images.html