These have been problematic for me for a while. This first one I had thought was either a
Mamm.or a
Cory. However, it has neither the typical
Mamm. wool between tubercles nor the usual shallow 'groove' on the upper side of the tubercle that denotes a
Cory. I was flipping through various genera searching for something unexpected yet possible. I'd like to know if this could be an
Echinomastus intertextus, whose nickname is a
'Pineapple cactus'. It looks more like these photos and fits the description more closely than anything else I've found. Anderson cites Britton and Rose noting that
Echinomastus resembles
Coryphanta. It's a slow grower. I've had it for about three years and last year was the first growth it showed, and it was lopsided...as if there had been an injury to the crown, but maybe that's just the way it grows. It's about two inches tall and two and a half inches diameter at the base.
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The second one certainly looks to me like a
Mamm.--perhaps either a
magnifica or a
dixanthocentron although the tubercles and areoles look much smaller and numberous on mine. It is about two inches tall and two and a quarter inches wide. If not these, can anyone suggest another possibility?
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After several attempts to ID the third one, I believe it is a
Peniocereus serpentinus--the former
Nyctocereus serpentinus. Can anyone verify?
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. The fourth one I had thought was something in the
Echinopsis genus, but the more I look at it and see similar pictures in other genera, I'm not so sure. I just bought it in late January. It's about two and a quarter inches tall. Help?
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