Ritter's colour descriptions  Solved

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Paul D
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Ritter's colour descriptions

Post by Paul D »

In some of Friedrich Ritter's plant descriptions in Latin, he mentions colour numbers. For example in the description of Rebutia rutiliflora he says "colore 4 ad 5" (colours 4 to 5) but I can't see a reference to what colours 4 and 5 are- can anyone advise?
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Re: Ritter's colour descriptions

Post by FredG »

Possibly the RHS Colour Chart? It appears to be an accepted standard for Botanists worldwide
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Re: Ritter's colour descriptions

Post by iann »

RHS "numbers" also have a letter. Even ignoring the letters, the difference between shades 5 and 6 is almost imperceptible. They are shades of yellow, although not the orange-yellow shades I'd have thought would be used for Rebutia rutiliflora. My guess is these numbers are something else.
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Re: Ritter's colour descriptions

Post by Paul D »

iann wrote: Tue May 04, 2021 11:41 am RHS "numbers" also have a letter. Even ignoring the letters, the difference between shades 5 and 6 is almost imperceptible. They are shades of yellow, although not the orange-yellow shades I'd have thought would be used for Rebutia rutiliflora. My guess is these numbers are something else.
That's what I thought Ian. Wondered if there was a German equivalent?
Paul in North-east Scotland (Grampian Branch BCSS)
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Re: Ritter's colour descriptions

Post by Detlev »

Ritter used the colour chart of E. Biesalski: "Pflanzenfarben-Atlas", which was published in 1957. The colour chart is based on the German standard DIN 6164.
Unfortunately it is no longer available. I got my copy many years ago from an old cactus friend.
Once it was offered by Schwarz, but now it is sold out there, too: https://www.kakteen-schwarz.de/content/ ... ch&id=1032
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Re: Ritter's colour descriptions  Solved

Post by Paul D »

Detlev wrote: Tue May 04, 2021 1:34 pm Ritter used the colour chart of E. Biesalski: "Pflanzenfarben-Atlas", which was published in 1957. The colour chart is based on the German standard DIN 6164.
Unfortunately it is no longer available. I got my copy many years ago from an old cactus friend.
Once it was offered by Schwarz, but now it is sold out there, too: https://www.kakteen-schwarz.de/content/ ... ch&id=1032
Aha! There is the answer. Thankyou!

I found an online version here https://dtpstudio.de/atlas/farbsysteme/ ... bs00_3.htm
Paul in North-east Scotland (Grampian Branch BCSS)
National Collection Rebutia, Aylostera & Weingartia (inc. Sulcorebutia). Also growing a mixture including Ferocactus, Gymnocalycium, Lobivia, Mammillaria, Lithops, Gasteria, Haworthia.
http://www.rebutia.org.uk
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Re: Ritter's colour descriptions

Post by Detlev »

I found an online version here https://dtpstudio.de/atlas/farbsysteme/ ... bs00_3.htm
Good tip, I didn't know that webpage yet.
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Re: Ritter's colour descriptions

Post by FredG »

Nice find. :grin:

So what is colore 4 ad 5 ?
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Re: Ritter's colour descriptions

Post by anders »

Ritter described them in Kakteen in Südamerika, vol. 1 as 4 = golden yellow, 5 = orange red.
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Re: Ritter's colour descriptions

Post by Paul D »

FredG wrote: Wed May 05, 2021 7:55 am Nice find. :grin:

So what is colore 4 ad 5 ?
There is also this colour wheel. Though it has been blown up from a tiny pic, and I don't think is a reliable guide to the colours! Imagine it brighter.
If anyone ever has one of these colour guide atlases to sell, please let me know.
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Paul in North-east Scotland (Grampian Branch BCSS)
National Collection Rebutia, Aylostera & Weingartia (inc. Sulcorebutia). Also growing a mixture including Ferocactus, Gymnocalycium, Lobivia, Mammillaria, Lithops, Gasteria, Haworthia.
http://www.rebutia.org.uk
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