bocasana not hahniaana

Stefan, please explain the basis for your conclusions.

I posted the picture using the ID on a label. I realize they can be wrong.

Baja_Costero said:Stefan, please explain the basis for your conclusions.

Really?
-flower is bright pink instead of magenta, shape of petals also wrong
-small stems, wrong tubercules
- hooks
Labels can be wrong

skopjecollection said:Really?

I am asking this as a courtesy to the person who uploaded the image to the database, and as a way for others to assess your conclusion.

If you are convinced an image is filed in the wrong location, it's helpful to provide a rationale. That way everyone can learn the details about the plants that matter for an ID. What is obvious to you may be brand new to someone less experienced with cacti. Does that make sense? I'm trying to think of the common good here.

Here are the two entries we are comparing:
Powderpuff Cactus (Mammillaria bocasana)
Viejita (Mammillaria hahniana)

I have added a descriptive comment for both species. Please let me know if they can be improved.

skopjecollection said:
-flower is bright pink instead of magenta, shape of petals also wrong
-small stems, wrong tubercules
- hooks
Labels can be wrong

I agree about the small stems and the flower color, which is not typical for hahniana. I am seeing pointy and not rounded petals on both species, but hahniana is ultra-variable so maybe there's a form we don't have represented. In other words, I don't see any correspondence of petal shape with those 2 species, here or in either of my 2 reference books (Anderson, Pilbeam).

I agree that hooked spines are a feature of bocasana and not hahniana, unless there's some outlier variant involved.

skopjecollection said:Labels can be wrong

Indeed.

https://worldofsucculents.com/...

I think Stefan is right. I do not think the cactus in terms of appearance with small offsets is overly typical of bocasana, but it certainly is a pretty close match hooked spine and flower wise.

Image moved.