Washingtonia filifera or W. robusta or W. filibusta?

neonrider(USDA 8A ^ Sunset 31 ^ Mid-SC)July 22, 2011

Hi,

I invite hobbyists and professionals who have knowledge of Washingtonia species - California and Mexican Fan palms and their hybrids, to discuss and identify these and many others amnd post your own photos identifying trunks, fronds, petioles, hastulas of a variety of Washingtonias to help us identify these palms better in the future.

Are these Washingtonia filifera or W. robusta or W. filibusta?

1. Grows in Columbia, South Carolina:

http://www.equay.com/palm63.jpg

2. Grows in Lexington-Columbia, South Carolina on a Sunset Blvd.:

http://www.equay.com/palm66.jpg

3. Grows (many) in Barnwell, South Carolina (next to some inn):

http://www.equay.com/palm31.jpg

4. Grows in North,SC:

http://www.equay.com/Palms080.jpg

http://www.equay.com/Palms083.jpg

http://www.equay.com/Palms084.jpg

http://www.equay.com/Palms085.jpg

http://www.equay.com/Palms087.jpg

http://www.equay.com/Palms088.jpg

http://www.equay.com/Palms090.jpg

http://www.equay.com/Palms092.jpg

http://www.equay.com/Palms093.jpg

I include photos of hastulas, petioles and fronds of this palm to be ablew to identify it better. These (#4) I believe are probably W. filibusta hybrids. Or they could be W. robusta? Correct me if I'm wrong.

Here is a link that might be useful:

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mastiffhoo(7)

I can't help but think that there is something eerily familiar about the format of this post... hmmm?

    Bookmark   July 22, 2011 at 7:37PM
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neonrider(USDA 8A ^ Sunset 31 ^ Mid-SC)

Excuse me?

    Bookmark   July 23, 2011 at 1:05AM
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DwayneSC

All of the ones in your pictures are Washingtonia robusta, except for number 2, which I believe is a W. filibusta with exceptional hybrid vigor. I've been watching the filibusta since its planting sometime around 2000-2001(It was planted by a now defunct palm nursery). The only true W. filifera that I'm aware of above the Midlands are located at Greenville Technical College.

Here are some pics.

Greenville Tech Washingtonia filifera-July 2, 2011.

Greenville Tech Washingtonia filifera-July 2, 2011.

Greenville Tech Washingtonia filifera-October 23,2010.

Greenville Tech Washingtonia filifera-October 23, 2010.

Washingtonia filibusta 2007(?)

Washingtonia robusta in Sumter,SC.

Washingtonia robusta in Abbeville,SC.

Btw, the W. filifera at Greenville Tech have been there for about six years, and have survived a low of 11 degrees, both in 2010 and 2011.

    Bookmark   July 23, 2011 at 1:45PM
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neonrider(USDA 8A ^ Sunset 31 ^ Mid-SC)

Thanks for the beautiful photos, the identification and the info! A Washingtonia robusta in Abbeville! Who knew.

    Bookmark   August 7, 2011 at 6:29PM
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neonrider(USDA 8A ^ Sunset 31 ^ Mid-SC)

I was trying to find a Washingtonia filifera (California Fan Palm) in SC and all I could find to buy was this one with a clear trunk of just over a foot. As far as I know the ones safe to plant in the ground must have at least 2 feet of clear trunk. Do you think this is definitely a Washingtonia filifera?

http://www.equay.com/Palms172.jpg
http://www.equay.com/Palms173.jpg
http://www.equay.com/Palms174.jpg
http://www.equay.com/Palms175.jpg
http://www.equay.com/Palms176.jpg

Thanks a lot for your help! I hope this thread stays on and helps others to identify their palms as well.

Here is a link that might be useful:

    Bookmark   August 7, 2011 at 6:47PM
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tropicalzone7(7b)

The palm in the planter in your last post looks like robusta to me. Filifera is very thready and usually a bit fatter, even at a young age.
-Alex

    Bookmark   August 7, 2011 at 7:06PM
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neonrider(USDA 8A ^ Sunset 31 ^ Mid-SC)

If the one above is a W. robusta that would be very disappointing after buying it marked as W. filifera. Same as the seller I too thought it is W. filifera because the petioles and the "teeth" have yellow color to them. I am attaching a link to another palm that's got over 2 feet of clear trunk and that's been offered to me as definitely a W. filifera. What do you guys think?

Here is a link that might be useful:

    Bookmark   August 7, 2011 at 7:33PM
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earthworm73(WA z8)

neonrider I'm no expert but I have one at home now that looks pretty much like that one in your last pic except mine has a little bit of burgandy blushing on some of the frond base. It was sold as a robusta but I think it is a hybrid filibusta leaning more towards a robusa. And with that I believe yours is a hybrid that leans towards filifera. Don't stress hybrids are the best of both worlds - more cold tolerance with faster growth. I'm happy mine is a hybrid I just wish it leaned more towards a filifera.

    Bookmark   August 7, 2011 at 8:01PM
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don_licuala(10a)

Washingtonia is monotypic. The two "species" commonly called out are merely phenotypes unsupported by genotyping. If what you want is "filifera", you should check out west. Maybe Yuccado has some. Be aware that this palm is less tolerant of moisture when young than "robusta".

    Bookmark   August 7, 2011 at 8:08PM
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