Hey Phil,

I am surprised to see the name. As far as I know it will be published in September KuaS which has not arrived here yet. Who told you?

Best regards Nobby

I will tell more after publication is official (in two or three days).

Hello Mike, This plant is often mistaken for P. araucanus, but it differs by several characteristics: e.g. flower, stem/segments, spination. If you look at the article of Roberto Kiesling "The genus Pterocactus" in the Cactus and Succulent Journal of Great Britain Volume 44 (3): p.51-56 (1...

Hallo Mike, if you want to see flowers it would be helpful to change some things in cuture. First of all your plant needs a really big pot. If the pot is too small for the tuberous root it will not be able to take up sufficient water and fertilizer. In nature (in the case of your plant this is near ...

Hallo Iann,
I am rather sure it is not Copiapoa tocopillana.
This plant looks more or less like a "normal" Copiapoa humilis.

This is the only living plant of Copiapoa tocopillana I saw in the field (compare tubercles and spination):
Greetings Nobby

But in a few years we will miss the British friends at ELK.
Nobby

Sorry Dave - I am still growing a "green"-stigma plant with an offset reserved for you!
Is that ok?
Nobby

PS: I did not count the plants but we have ~ 8 sqm of Pteros. Most are from self collected seed.

Diane - it is Pterocactus valentinii! I'am sure!

The picture below is from this year and shown by facebook too.
You see some of our Pterocactus hickenii.
In this year there are not so many flowers bur a lot of new offsets.
Greatings Nobby

That is interesting, but how long is a short day in the habitat.

About 10.50 to 11.5 hours.
Long day: 14.00 hours.

Nobby

Look here: http://www.solartopo.com/tageslaenge-jahresverlauf.htm

I have all typical Lobivia at 4°C in a greenhouse.

All Soehrensia up to -15°C in a rain protected cold house with fresh air (we call it Patagonium).

We are not talking about politics and economics. We are talking about CITES!
Greenland is Danish and Teneriffa is Spanish. Nevertheless you need CITES documents for importing/exporting plants.

But I believe the best is to wait and see.

Greetings Nobby