Another Eriosyce to ID

If you have a cactus plant and need help identifying it, this is the place to post it.
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Grimm
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Location: Lincolnshire, England

Another Eriosyce to ID

Post by Grimm »

I have another Eriosyce to ID please, this one is from seed collected in habitat, collected and grown by John Henshaw (Croston Cactus). He's not sure what it is, thinking it might be paucicostata, but I think it might be a long spined form of heinrichiana.

EDIT: It does have a substantial taproot.

Image

The collection point was a layby off the Panamericana Norte in the Coquimbo Region, Co-ords -29.3791981 -71.0909922

https://www.google.co.uk/maps/@-29.3791 ... 6656?hl=en

Here's photos of the parent plant and habitat:
Eriosyce sp P2114579.JPG
Eriosyce sp P2114579.JPG (28.45 KiB) Viewed 550 times
Eriosyce sp P2114566.JPG
Eriosyce sp P2114566.JPG (35.81 KiB) Viewed 550 times
Eriosyce sp P2114567.JPG
Eriosyce sp P2114567.JPG (44.25 KiB) Viewed 550 times
Eriosyce sp P2114578.JPG
Eriosyce sp P2114578.JPG (49.12 KiB) Viewed 550 times
Eriosyce sp P2114568.JPG
Eriosyce sp P2114568.JPG (115.01 KiB) Viewed 550 times
Eriosyce sp P2114569.JPG
Eriosyce sp P2114569.JPG (109.71 KiB) Viewed 550 times
Last edited by Grimm on Sun Nov 26, 2017 3:50 pm, edited 1 time in total.
stefan m.

Re: Another Eriosyce to ID

Post by stefan m. »

Id add eriosyce atroviridis to the possibilities. Also, those berries look tasty. edit But too big for the suggestion. Maybe Eriosyce taltalensis, esmeraldiana or napina seem to be a closer match fruit and spinewise. From what youve shown me in your on site photos, henirachiana has a different build in the wild(either taller, thiccker spines, or somewhat spineless-think theyre kinda unsure about ID).
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toson
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Re: Another Eriosyce to ID

Post by toson »

Pyrrhocactus heinrichiana is my best guess
DaveW
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Re: Another Eriosyce to ID

Post by DaveW »

E. esmeralda and napina are Thelocephala's, a quite different section from the above plant.

E. paucicostata and E. neohankeana come from much further north in the Taltal/Paposo region, as does E. taltalensis sensu stricto. I have not had time to check what comes from around your quoted region yet.
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Grimm
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Re: Another Eriosyce to ID

Post by Grimm »

I've finally got around to checking Katterman's maps, which I should have done in the first place instead of being lazy!

The closest Horridocacti on his maps to the coordinates (-29.3791979, -71.0909919) are heinrichiana and kunzei/eriosyzoides, nothing else seems to be close by. It certainly doesn't seem to be kunzei/eriosyzoides!
DaveW
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Re: Another Eriosyce to ID

Post by DaveW »

E. heinrichianus is fairly widespread in that area. In the past it used to be better known in cultivation as Pyrrhocactus jussieui, as Ritter called it at first and I think Knize did also, but Backeberg's name heinrichianus takes priority. If I remember correctly Knize's P. subikii is also part of the same population.

I have a job identifying a lot of these black spined Eriosyce (Horridocactus) since most look very similar in habitat and there is quite a range of variation in spination even in the same population. Also bodies can sometimes be greenish or blackish according to if they grow in shade or full sun. It's often "if its so and so locality it must be so and so species".

Scroll down the link to see heinrichiana:-

http://forum.bcss.org.uk/viewtopic.php? ... &start=100
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