Growing Pains: Citiosum

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Growing Pains

By valleylynn
January 1, 2010

A plant clinic for Sempervivum, Jovibarba and J. heuffelii. This is a companion article for the Sempervivum and Jovibarba forum.

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Name: Chris
Ripon, Wisconsin
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Sages Forum moderator Garden Ideas: Master Level Plant Database Moderator
Seller of Garden Stuff I sent a postcard to Randy! Sempervivums Sedums Region: Wisconsin Hosted a Not-A-Raffle-Raffle
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goldfinch4
Jul 2, 2010 9:41 AM CST
Hey Dr. Houseleaks, can you help me find some information on the semp S. 'Citiosum'? Lynn is helping me add this to the database and we can't find any info on it other than what's on North Hills website. Thank you!

(It's a little dirty from shipping in this picture.) Very cool plant - little chicks all around the base almost seem to lift the hen up.



Thumb of 2010-07-03/goldfinch4/1ecc0e
Cubits Store: The Sempervivum Patch - plants, containers, accessories!
Also stop by Timber Treasures and Garden Buddies on Cubits
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
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valleylynn
Jul 3, 2010 12:35 PM CST
Do you have a picture Chris that you can post in your first post? Would love to see what it looks like. Thumbs up

Charter ATP Member I was one of the first 300 contributors to the plant database!
twitcher
Jul 3, 2010 9:36 PM CST
Chris,

Even though North Hills lists this on their web site, I think it likely that this was a misspelling of "ciliosum" or "cilliosum". Formal names of plants appearing in print is "magically significant" to professionals working in the field of biology. It's serious business who gets to name what plant and what constitutes a new plant that is "name-able", especially concerning species names. Careers can depend on it.

As hobbyists, we have a responsibility to try to maintain correct names on what we grow, if we share with others. Thus, if NH called your plant "Citiosum", then you should use that name, unless an "authority" or NH tells you otherwise. However, it is important for them to let you know if their source used the capitalized or lower case form of the name. Why is this? Well by convention, species names are lower cased, and hybrid varieties (or ones named by non-professionals), called varietal names, appear in caps in quotes.

"Ciliosum" is a species name for a species of Sempervivum (capitalized here because it is at the beginning of the sentence), so its formal plant name would be "Sempervivum ciliosum". Within the species "Sempervivum ciliosum", you can have multiple subspecies such as Sempervium ciliosum ssp borissi or potentially varietal named cultivars such as Sempervivium ciliosum 'Twit' (I just made that name up, it is not a real variety).

So since the original name was capitalized Sempervivum 'Citiosum' this should be treated as a varietal name until we can learn otherwise.

To add to the confusion on this case, the NH picture of S. 'Citiosum' looks a lot like S. ciliosum! Confused And, they (NH) have plants named "cilliosum" used as a species name. Perhaps NH misspelled the name on their web site or alternatively they are using the name given to them.

This name confusion is actually more common then you may suppose. As people try to keep track of names and tag their plants, its inevitable that mistakes will happen. When the mistake gets passed on to others, uncertainty regarding the original name occurs. And there are always those that just don't care about the real names of their plants, as astounding as that appears to be! Blinking

I tip my hat to you.
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
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valleylynn
Jul 3, 2010 10:15 PM CST
Chris that is an awesome photo. I think Dr. Houseleeks is correct. For now we will leave it as S. Citiosum. The link I have you will help ID it when it blooms.
Thank you so much Dr. Houseleeks, it all makes sense the way you explained it. Thumbs up
Name: Chris
Ripon, Wisconsin
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Sages Forum moderator Garden Ideas: Master Level Plant Database Moderator
Seller of Garden Stuff I sent a postcard to Randy! Sempervivums Sedums Region: Wisconsin Hosted a Not-A-Raffle-Raffle
Image
goldfinch4
Jul 4, 2010 4:05 AM CST
Thanks Doc for the information. That really helped me understand the naming of plants. It will remain 'Citiosum' until proved otherwise. Smiling
Cubits Store: The Sempervivum Patch - plants, containers, accessories!
Also stop by Timber Treasures and Garden Buddies on Cubits

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