Is this an astrophytum nudum?

If you have a cactus plant and need help identifying it, this is the place to post it.
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romesion
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Is this an astrophytum nudum?

Post by romesion »

And what you think about the second plant?
Thank you!!
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Lucy_V
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Re: Is this an astrophytum nudum?

Post by Lucy_V »

I think it is Matucana aureiflora
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Tom in Tucson
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Re: Is this an astrophytum nudum?

Post by Tom in Tucson »

The pictures are so poor, I wouldn't hazard a guess. Try increasing the light level, and get closer if possible.
gillinger
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Re: Is this an astrophytum nudum?

Post by gillinger »

Number 1 looks like A. myriostigma. More light would help
"Once in a while you can get shown the light in the strangest of places if you look at it right"
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romesion
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Re: Is this an astrophytum nudum?

Post by romesion »

I hope these pics helps more
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DaveW
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Re: Is this an astrophytum nudum?

Post by DaveW »

If you are not photographing for backlit effects don't normally take pictures with the light behind the plant since it will make the side of he plant towards you too dark unless the exposure is corrected, something most snapshotters do not do. Take it with the light towards the rear of you so the nearside of the plant is being lit by the light. Even take it outside to photograph if needs be.

Looks like a nude form of Astrophytum, but these are not really varieties or subspecies, probably best just considered a "forma" or f. nudum since all of the Astrophytum species can vary in the amount of floccose spotting and produce fully nude forms.

https://www.bing.com/images/search?q=as ... HoverTitle

Simply variation in a species just like 3 ribbed Astrophytum myriostigma's which may retain this characteristic for a time but may eventually produce a fourth rib much to the owners annoyance!
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anttisepp
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Re: Is this an astrophytum nudum?

Post by anttisepp »

2nd is some Eriosyce on steroids IMHO.
But hope is always there where life still is.
Recommend to replant poor plant in normal cactus substrate, to pick off all pups and to give much sun.
Next year in good shape with flowers to show again.
:)
romesion
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Re: Is this an astrophytum nudum?

Post by romesion »

Thank you all for your help and your advices.
All my plants are now in new bigger pots and standing on their place that i made outside.
Thank you again!!
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jerrytheplater
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Re: Is this an astrophytum nudum?

Post by jerrytheplater »

romesion wrote: Wed Aug 31, 2022 1:02 pm All my plants are now in new bigger pots and standing on their place that i made outside.
If you have moved your plants from a low light area to full sun, beware you don't sunburn them. They need to adjust to increased light levels over a period of time. Increase the light intensity/duration a little bit each day for up to two weeks. Noon is the brightest.
Jerry Smith
Bloomingdale, NJ
45 inches (114 cm) rain equivalent per year, approx. evenly spread per month
2012 USDA Hardiness Zone 6b: -5F to OF (-20C to -18C) min.
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greenknight
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Re: Is this an astrophytum nudum?

Post by greenknight »

Agreed. Morning sun at first works well.
Spence :mrgreen:
romesion
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Re: Is this an astrophytum nudum?

Post by romesion »

I had them always outside but in a place with more shadow
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jerrytheplater
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Re: Is this an astrophytum nudum?

Post by jerrytheplater »

OK, but the caution still is there. It is easy to scar your plants. I've done it too many times.
Jerry Smith
Bloomingdale, NJ
45 inches (114 cm) rain equivalent per year, approx. evenly spread per month
2012 USDA Hardiness Zone 6b: -5F to OF (-20C to -18C) min.
romesion
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Re: Is this an astrophytum nudum?

Post by romesion »

I will start tomorrow a structure for protection. I will use it also for protection in the winter
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