The Encyclopedia of Cacti

http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/12858/Astrophytum_hybrid_AS-ONZ_(A._asterias_x_A._myriostigma_cv._Onzuka)

Star Astrophytum Poland

http://www.starastrophytum.com/I-EN.html?lang=en&page=I

also:
http://cactus-heaven.com/plants.phtml


http://www.magicactus.com/lw_caespitosa.html

Great info for seedling Grafts

http://www.lapshin.org/cultivar/N12/articl-e.htm

Todays grafts

x3 Astrophytum hybrids onto Opuntia

x1 Astrophytum hybrid onto Pereskiopsis

x4 Mooncactus onto Opuntia

First Astrophytum Seedlings Grafted onto Pereskiopsis Root Stock

x2 Astrophytum seedlings grafted onto Pereskiopsis Root Stock. Left in humid environment for 1 week. Should be opened 14/10/13

Airocarpus from Seed

http://www.living-rocks.com/laras.htm

Lophophora Soil Mix

http://www.magicactus.com/propagation.html

http://lophophora.blogspot.co.uk/2009/09/recipe-for-cactus-soil-mix.html

grafts:
http://lophophora.blogspot.co.uk/search/label/Grafted%20cactus