echinofossulocactus (w/ dark spines)

[ohugal]

Anyone any ideas on this Echinofossulocactus? Can't find a species with dark(ened) spines.

[mikethecactusguy]

you checked LLifle?

[ohugal]

you checked LLifle?

Yes. Also cactiguide.com and several books. I’ll check again, but am identifying several hundred species for the botanical garden here. When I really dont know I post it on the forum. A temporary guess is also good. When a cactus flowers i check again.

[Jangaudi]

A little hard yes, cause as usually there's variations in spine color and such. Luckily there not that many species around. After looking a bit, I think some pictures of Stenocactus rosasianus looks rather close, and I saw that "a famous Italian nursery" sells/sold this species with dark grey spines, and they're always present at ELK, which could explain how it got to Antwerp. They should have purplish flowers though it's called "pale to bright pink" in some places.

[arturo conan]

mira a ver Stenocactus Skrynkelkaktus crispatus
https://www.alamy.es/cerebro-cactus-ste ... 87844.html

[ohugal]

A little hard yes, cause as usually there's variations in spine color and such. Luckily there not that many species around. After looking a bit, I think some pictures of Stenocactus rosasianus looks rather close, and I saw that "a famous Italian nursery" sells/sold this species with dark grey spines, and they're always present at ELK, which could explain how it got to Antwerp. They should have purplish flowers though it's called "pale to bright pink" in some places.

Thanks! Are you referring to Giromagi's?

mira a ver Stenocactus Skrynkelkaktus crispatus
https://www.alamy.es/cerebro-cactus-ste ... 87844.html

They look very similar. I'll look into it. The amount of spines are a match, also 4 darker main spines and 4 lighter smaller spines. The main spines of the S. crispatus look a bit flatter, but that is maybe due to enviromental conditions? Also thanks!

[Jangaudi]

Thanks! Are you referring to Giromagi's?

Yes, now that you mentioned it, here's the one they sold : https://www.giromagi.com/en/shop/echino ... naus/45513

[arturo conan]

https://www.cactus-art.biz/schede/ECHIN ... sianus.htm

the thorns as black as his are not observed

[ohugal]

https://www.cactus-art.biz/schede/ECHIN ... sianus.htm

the thorns as black as his are not observed

Maybe it's age related? Young(er) specimens of the E. Crispatus also display lighter coloured spines.

[mikethecactusguy]

Echinofossulocactus hastatus

[ohugal]

Echinofossulocactus hastatus

Appears to be (by exclusion). E. ochoterenanus is too densily spined. The description of the spines of E. hastatus is a match (llifle). According to the website the accepted scientific name for E. hastatus is Stenocactus crispatus. How should interpret this?
Thanks by the way!

[mikethecactusguy]

The darkening of your spines could be from sun exposure or lack of sun exposure. But E. hastatus is described as having dark spines.
Glad to help