I have some chamaecyparis nomenclature questions

mrgpagAugust 29, 2011

I volunteer at a local arboretum and have been asked to go through our collections database and look for errors, conflicting information and the like. In doing so I have questions about chamaecyparis cultivar 'Sullivan'.

When new plants arrive, the names are added into the database as received. Dirr's manual on woody plants has been the source for info pertaining to nomenclatures and authority, but he is incomplete and not accurate in many cases. And Dirr does not provide much if any cultivar info on chamaecyparis.

In 1997 we received a number plants labeled chamaecyparis nookatensis 'Sullivan' and in 2004 we received plants labeled chamaecyparis lawsoniana 'Sullivan'. Both accessions resemble each other in physical appearance.

So was c.nookatenis 'Sullivan' changed at some point to be c. lawsoniana 'Sullivan' or is there still a Sullivan cultivar for both species.

I appreciate any discussion along with any authority that was responsible for the changes.

Also, does anyone know if the 2011 International Botanical Congress changed the name of Callitropsis to Xanthocyparis?

Thanks Marshall

Thank you for reporting this comment. Undo
tsugajunkie z5 SE WI

I don't know about 'Sullivan' but I thought DNA testing had the powers that be settling on Cupressus nootkatensis, but I did not hear the official word.

tj

    Bookmark   August 29, 2011 at 4:56PM
Thank you for reporting this comment. Undo
coniferjoy(z7 The Netherlands)

Hi Marshall, Chamaecyparis nootkatensis was renamed in Xanthocyparis nootkatensis.
By some it should be Cupressus nootkatensis or Callitropsis.
For me it's still Xanthocyparis nootkatensis but I think it will take a couple of years before I'll rename it into Cupressus nootkatensis.
For mew as a nurseryman all this renaming is a very big confusion...

The 'Sullivan' is a Chamaecyparis lawsoniana cultivar because of it's typical lawsoniana foliage and cones...

Here is a link that might be useful: 'Sullivan' pics

    Bookmark   August 29, 2011 at 5:05PM
Thank you for reporting this comment. Undo
pineresin

Can you post some photos of the plant? Include cones if it has any. That'll help determine what species your specimen is (in case it isn't correctly labelled).

Yep, Cupressus nootkatensis for Nootka Cypress. See e.g. here (pdf file; scroll down to Cupressus [# 11.24.] and note synonymy includes Xanthocyparis).

Resin

    Bookmark   August 29, 2011 at 7:29PM
Thank you for reporting this comment. Undo
mrgpag

My question remains - is there a "whatever" nootkatensis 'Sullivan'? I'll be more concerned about the proper genus when that question is answered. Pictures may be available but not for several days.
Marshall

    Bookmark   August 29, 2011 at 8:37PM
Thank you for reporting this comment. Undo
coniferjoy(z7 The Netherlands)

Marshall, there's no 'Sullivan' cultivar for both species, it's a Chamaecyparis lawsoniana for sure.
I received my plant under Chamaecyparis nootkatensis but I saw immediatly that it was a Chamaecyparis lawsoniana...
These are some pics of the one I received.

    Bookmark   August 30, 2011 at 1:52AM
Thank you for reporting this comment. Undo
pineresin

"My question remains - is there a "whatever" nootkatensis 'Sullivan'? I'll be more concerned about the proper genus when that question is answered"

There's no Nootka cultivar 'Sullivan'. But what we can't know without pics, is whether you have a plant of Chamaecyparis lawsoniana 'Sullivan', or a plant of Cupressus nootkatensis mis-labelled as 'Sullivan'.

Resin

    Bookmark   August 30, 2011 at 5:25AM
Thank you for reporting this comment. Undo
coniferjoy(z7 The Netherlands)

That's right, pictures please!
(but I think I know the answer :0) )

    Bookmark   August 30, 2011 at 6:34AM
Thank you for reporting this comment. Undo
mrgpag

Thanks - that answers one question. I'll post some pictures in a day or two to try and determine what we really have.
Marshall

    Bookmark   August 30, 2011 at 8:25AM
Thank you for reporting this comment. Undo
ken_adrian Adrian MI cold Z5

14 of 15 laws .. tiny bargain plants from stanley.. way back when.. all died in my z5 ... alum being the only exception ...

depending on your micro climate.. you should be able to tell if it is a law.. after the first z5 winter.. lol ...

ken

    Bookmark   August 30, 2011 at 8:45AM
Thank you for reporting this comment. Undo
mrgpag

OK, here's some images - Whatcha think?

    Bookmark   August 30, 2011 at 8:37PM
Thank you for reporting this comment. Undo
coniferjoy(z7 The Netherlands)

Chamaecyparis lawsoniana 'Sullivan' :0)
Typical foliage and cones for this species.

    Bookmark   August 31, 2011 at 12:50AM
Thank you for reporting this comment. Undo
mrgpag

Thanks - that's what I thought as well but needed some confirmation.
Marshall

    Bookmark   August 31, 2011 at 2:38AM
Thank you for reporting this comment. Undo
ken_adrian Adrian MI cold Z5

is it some secret which local arb???

ken

    Bookmark   August 31, 2011 at 8:54AM
Thank you for reporting this comment. Undo
deltaohio

Ken there is a row of them growing at Hidden Lake close to the parking area.

Frank

    Bookmark   August 31, 2011 at 9:14AM
Sign Up to comment
More Discussions
will Juniperus virginiana 'Grey Owl' cones germinate?
The grey owl juniper has horizontal spreading branches...
tlbean2004
Growing Conifers from cutting.
Hi, I recently took some conifer cuttings ( cedar,...
Joshua Hughes
Utah conifer grafters?
I live in Salt Lake and am wanting to try grafting....
treeforme
A question for the grafters among you
Hi,with experience,I've realised the main hurdle to...
gary77788
Test
Test
bamboo_nuts
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™