RE: [Aroid-l] Philodendron glaucophyllum

To Wit:
Well Steve, per our private discussion as to the true identity of the elusive species P. mandaianum, or hybrid P. X 'Mandaianum', the latter of which is pictured and described in Exotica and Tropica (Graf), and other sources as well, Tom's reply of 'no such name' is most interesting.
 
So can we call this plant Philodendron hastatum 'Glaucophyllum'? It differs from the regular ph. hastatum in blueish leaves.
 
The governing codes are the International Code of Botanical Nomenclature for taxa and the International Code of Nomenclature for Cultivated Plants for culta (cultivars). If a species name is not published according to the ICBN rules, it is not accepted. To extablish cultivar names, proper orthography has to be used. As in the above hybrid P. X 'Mandaianum' can not be established, because Art. 13.3 of the ICNCP does not permit the use of the multiplication sign (X) in a cultivar name. If he correct cultivar name formulation should be P. 'Mandaianum', if such a name has been established in the Aroid cultivar registry.
 
Philodendron hastatum 'Glaucophyllum' would be an acceptable cultivar name only if P. glaucophyllum was published before 1 January 1959. If it was published after this date (either validly or invalidly under the ICBN)), this Latin formulation can not be used as a cultivar name and a name in a modern language must be selected under the ICNCP and established in the Aroid cultivar registry.
 
Best, George
 
W. George Schmid
Hosta Hill R. G.
USDA Zone 7a - 1188 feet (361m) AMSL
84-12'-30" W 33-51' N
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From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Hermine
Sent: Tuesday, 16 May, 2006 2:55
To: Discussion of aroids
Subject: Re: [Aroid-l] Philodendron glaucophyllum

At 09:21 PM 5/15/2006, you wrote:
Well Steve, per our private discussion as to the true identity of the elusive species P. mandaianum, or hybrid P. X 'Mandaianum', the latter of which is pictured and described in Exotica and Tropica (Graf), and other sources as well, Tom's reply of 'no such name' is most interesting.

Mr Graf took peoples' names and wrote them down, and as far as I know did not take it any further than that. In no way to I criticize him, i think EXOTICA is the mother of the interest in RARE PLANTS in the USA. I also knew immediately what you meant by phil glaucophyllum since i had heard it applied to THAT PLANT for ages. When graf came here to photograph some bamboo, we told him this name on it was just what it was being called NOW, and we fully expected it to be a temporary name, and due to be changed in the very near future, and he did not seem concerned, concerned ONLY with getting the grove on film.

NOBODY worships accurate taxonomy more than I do, by the way. My greatest contribution to it is removing wrong labels, since i do not name species. i am relieved to report that this is NOT MY JOB! I do use various punctuation marks to indicate a name in current usage has not been thoroughly vetted.  The one thing I do not do is go on the warpath every time i see a wrong name, unless it is something like a person putting a patent and a new name on a plant previously published by my good self. because that is just plain ICKY.

And I will follow up on the latest news in taxonomy and change my labels.

Of all the plants I grow, i know least about the names of Aroids than all the others. I am totally dependent on youse guys.

hermine
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