Aberrant P skottsbergii?

[RJC]

I have about 100 seedlings up from sowings of Pterocactus seeds from bought from Elisabeth and Norbert Sarnes (thank you) at the TSG meeting a couple of weeks ago. Of all of those, two of the three of P skottsbergii SAR 2971 which have germinated have three cotyledons (the 'fourth' is actually the stem at an oblique angle). I'll obviously keep an eye on them; there's presumably a bit of genetic mutation going on, so it will be interesting to see how they develop. Or will it? Anyone else has this from these seeds?

[RayW]

Most of mine have three cotyledons must be a trait of the species.
I was quiet surprised by the quick germination for these and the Tephrocactus I bought at TSG.

[ralphrmartin]

Thee is an article in the latest (Summer 2023) CSSA Journal about Pterocacti doing this, by Root Groelick.

[RayW]

Thanks for that Ralph.