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As nobody seems to be coming up with a new genus for April, (...)

had DaveW written and added real great pictures. July & August are already gone, we're nearing the middle of September. Some of us are starting to think about moving their cacti in (or out, depending on the hemisphere).

So I propose: What about Astrophytum myriostigma nudum? One of these won't stop flowering at ours.

The flowers open for two days; this is day one. On day one, they open yellow and silky. In contrast e.g. to Astro. capricorne or Astro. asterias, the inner part of the flower is not red. On day two, the flower has got a rose tinge and often a tousled look. This is the pair of buds from above, one or two days before opening. This is day one near the evening. On the first evening, they close nearly. By now, the outside has developed a rose tinge. This is day two of the pair. When the 2nd day is too cold or too rainy, they postpone flowering until the next day.

Nachtkrabb

Yes the nude forms are not limited to only one species of Astrophytum but have occurred in all the species.

Hallo DaveW,
could you post some picture of other "nude" cacti? Do you have some? -- I just know this Astro. myriostigma nudum.

I think there's difference between "nude" and "inermis" form, isn't?

DaveW wrote: ↑Sun Sep 11, 2022 10:21 am Yes the nude forms are not limited to only one species of Astrophytum but have occurred in all the species.

I've never seen a nude form of Astrophytum coahuilense. Can you post one?

You only need to Google for them Nachtkrabb.

See:-

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

Most cacti are nude in the botanical sense since they have smooth epidermises, it is usually only applied to those like Astrophytum's where the usual flocking on the epidermis is missing.

I have not seen a "nude" coahuilensis either, but no doubt if the Japanese selectively bread from less densely flocked plants, they could eventually produce some. Should have said "could occur in all the species". I don't know what percentage of "nude" forms exist in habitat, or what have been produced in cultivation by selective breeding. Producing Astrophytum cultivars is a favourite hobby for some Japanese.

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

Inermis = (Bot.) Unarmed; destitute of prickles or thorns. Or spineless for cacti, or largely so.

I show you my 5 species of astrophytum nudum forms except myriostigma.

Photo 1: nudum form of capricorne, capricorne v senill

Photo 2: nudum form of asterias, asterias cv ruri kabuto

Photo 3: nudum form of asterias, red floweirng asterias

Photo 4: nudum form of asterias, asterias cv kabuto nishiki

Photo 5: nudum form of hybrid, fukuryu banjyaku

There is a nudum form of ornatum but I lost.

Good looking nude A. asterias!

Interesting plants, Hanazono, although the last two look ... uncanny to me.
Never seen the like as healthy plants in 35years of cacti-love.
N.

G'day nachtkrabb,

although the last two look ... uncanny to me.

Last two are variegated Astrophytum.

Frank

anttisepp wrote: ↑Sun Sep 11, 2022 6:11 pm I think there's difference between "nude" and "inermis" form, isn't?

Wondering about the same . I belived ‘nude’/nudum was referring to no flecking and inermis was spineless?

Hallo Mrs.Green,
lat. inermis translates to "unarmed, defenceless, unarmed", i.e. spineless;
lat. nudus (nudum inneuter) is "naked, stripped", i.e. without flocks or similar.
N.