I crossed caput-medusae and got seeds from 6 plants.
I sown seeds from 4 plants on 01/02/09.
Only 2 seeds from 1 plant have germinated. (05/02/09)
It seems very poor germinatin ratio.
myriostigma cv fukuryu x caput-medusae
2 seedlings seem very healthy.

Interesting to see what they will end up looking like. Keep us posted Hana

Yeah, I'm very excited to see what they turn out looking like...

I grafted seedlings shown in the photo attached on 05/02/09.
In the photo, 2 seedlings were shown but actually 1 more came out, in total 3 seedlings.
I grafted very young seedlings, 5 days after germination.
3 of all were taken well. I cut bottom of stock and repotted this morning.
The photo was taken yesterday. The stock had no root.
I think the scion shows the evidence of hybridization. The color is not normal.

hi hanazono, i have a question for you, can you show me the way you use to graft young seedling to stok that are not peresk? im very interested but i've never tried this way because the lak of information(i have ever see the japanese growner made this tipe of graft but never tried it!)
thanks in advance Emanuele

Ohhh i can't wait to see what these turn out looking like Hanaz.

Thanks for sharing your hybridisation attempts here, very interesting stuff. Tinkering around with cactus genetics is always fun.

I found my caput-medusae in bloom when I came back from my business in the evening last Thursday.
Since sunlight was still remained, I could take a photo.
I did crossing. I believe I can collect some seeds.

That's quite a herd of caput-medusae that you have there. Very, very impressive!

Hanazono you do some amazing stuff very impressed.
I crossed ACM on myrio types and produced heaps of seed with poor viability. Grafted seedling all looked like myrio types. Also pollinated ACM with ONuka and other pollen set lots of viable seed. GRafted seedlings look vermuch like ACM but some have tubercles that are fat and heavy enough to fall off under their own weight.Now have f2 seeds off these ACM mother descendants. They should show a fair bit of variability if it is a hybrid but for now my money is on selfing. Hope they do cross as the potential for cultivars is mind blowing.
Many strange thing happen with ACM whem grafted. Pups from areole, multiple areoles on a single tubercle, multiple flowers from one areole (one had six!), tubercles from fruits, flowers growing out of the ends of tubercles and just when I thought it would no longer surprise me this happened! A crested flower! would be nice if this is followed by a crested offset growing fron the tubercle....
Also can confirm tubercles do root. not sure if plantlets will be produced though. Doesn't really matter though as they are prolific seed produces when mature.

cryptocarpa
Caput-medusae is quite new for me but it seems very different from other cactus.
I got seeds from a person, living in VIC last year. I sowed seeds on 24/08/08 and grafted some of seedlings. All my plants are same age and very young. I got information, as same as you mentioned, you could not expect any special things from f1 hybrid but it said f1 hybrid could cross with other genera. I have only 7 grafted f1 hybrid seedlings currently.
I hope it will happen sometings in next stage, f2.
Hanazono

Some really nice caput-medusae you have there Hanaz

Hybrids of caput-medusae have been growing very slowly as I got the information on the internet.
1. myriostigma cv fukuryu x caput-medusae
Same plant in the photo on 27th Feb, turned color becase of a hybrid

2. myriostigma v nudum cv khoyo, kikkou x caput-medusae
Although mother plant is nudum, thick flecking on body, assuming from caput-medusae.
Showing kikkou character in very early stage.

3. capricorne X caput-medusae

greath job hana realy nice seedling!
i hope it can evolve in someting realy nice
i have some seeds from a cross of asterias x digito i hopeit can be nice as yours!
greathings
emanuele

I can't wait to see the amount of variety that comes from hybridising caput-madusae with other Astrophytums.
I look forward to seeing these when they're older, especially the myriostigma v nudum cv khoyo, kikkou x caput-medusae.

I took photos of 3 hybrids on 21st this month, which were introduced once on 19th April, 6 months ago.
Hybrids of caput-medusae have been grown very slowly. They are around 3 cm diameter.
1.


2.


3.