The following specimen was acquired some time ago as a rather dried out, dehydrated stump which was potted, and after a bit of TLC they shot out a couple of pups. Presently the offshoots are almost 12 inches from stump to tip.
The person who gave it to me had sourced it from a person who simply advised that it was "San Pedro". Not enough information for my liking so I'm hoping someone can identify it for me. (I have asked this question before, but never got around to supplying photographs).
The only identification keys are confusing for me, as an amateur cacti keeper. The stump has seven ribs, while the offshoots have only five - you will observe from the first photograph that one of them morphed from six to five ribs at around the four inch point. The spines are typically three short spikes, but close observation reveals several smaller in the cluster, so overall up to seven.
My closest guess is that it's sp. pachanoi, but for the absence of 'v' shaped indentations above the areoles.
Any ideas ? Some explanations as to how you come to your conclusions would also be welcome.
Apologies for the less than perfect macro photos, my hands are a bit shaky and I have lost the quick release for my tripod. I think they are good enough for ID purposes though.
The following specimen was acquired some time ago as a rather dried out, dehydrated stump which was potted, and after a bit of TLC they shot out a couple of pups. Presently the offshoots are almost 12 inches from stump to tip.
The person who gave it to me had sourced it from a person who simply advised that it was "San Pedro". Not enough information for my liking so I'm hoping someone can identify it for me. (I have asked this question before, but never got around to supplying photographs).
The only identification keys are confusing for me, as an amateur cacti keeper. The stump has seven ribs, while the offshoots have only five - you will observe from the first photograph that one of them morphed from six to five ribs at around the four inch point. The spines are typically three short spikes, but close observation reveals several smaller in the cluster, so overall up to seven.
My closest guess is that it's sp. pachanoi, but for the absence of 'v' shaped indentations above the areoles.
Any ideas ? Some explanations as to how you come to your conclusions would also be welcome.
Apologies for the less than perfect macro photos, my hands are a bit shaky and I have lost the quick release for my tripod. I think they are good enough for ID purposes though.
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