Plant ID forum: Rose Acacia (Robinia hispida)

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Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
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Shadegardener
Jun 2, 2015 7:52 AM CST
In total shade in a back border my sister discovered this small blooming tree. There are a few of them close together here in NW IN. We think it's a locust of some sort but hoping for a more definitive identification. Sis had issues getting a decent photo and they turned out pretty grainy.
Thumb of 2015-06-02/Shadegardener/b55389


Thumb of 2015-06-02/Shadegardener/6b3e57


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bamira
Jun 2, 2015 8:52 AM CST
Maybe Thumbs down
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jun 2, 2015 9:19 AM CST
Wow - I never would have thought of wisteria. It's growing pretty much upright with no support although you can't see that from the picture. My dad (who's now gone) might have planted it but he was always about keeping the wild stuff. The flower color is pretty close but does wisteria have hairy stems?
Kentucky 😔 (Zone 6a)
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Swayback
Jun 2, 2015 11:49 AM CST
I don't think they do, I'd even say that looks bristled it's so hairy! I thought it was fine thorns like a rose gets on the bloom stem.

The pic is awfully grainy, your right, and my screen is tiny! So I can't see it well enough to say for sure but I think you have something else there.

I'd say legume family ( peas and locusts) the leaves look the part and I think if I see the flowers right they look like legume flowers too...

I'll be watching!
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Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Jun 2, 2015 1:00 PM CST
Could it be Robinia hispida, rose acacia/bristly locust?

Edited to add links:
http://www.illinoiswildflowers.info/trees/plants/bristly_loc...
https://www.uwgb.edu/biodiversity/herbarium/trees/robhis01.h...
[Last edited by sooby - Jun 2, 2015 2:14 PM (+)]
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Name: Clint Brown
Medina, TN (Zone 7b)
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clintbrown
Jun 2, 2015 2:10 PM CST
Our American Wisteria has much longer bloom clusters than that. Are you sure that's it? The American Wisteria won't stand on its own like that without support. My dad's has been attached to a support for 5 years and still won't stay up without support.
Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
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Horntoad
Jun 2, 2015 2:19 PM CST
clintbrown said:Our American Wisteria has much longer bloom clusters than that. Are you sure that's it? The American Wisteria won't stand on its own like that without support. My dad's has been attached to a support for 5 years and still won't stay up without support.


bamira did not say that it was American Wisteria, only offering a suggestion as a possibility. But I agree with you that it is not American Wisteria.

wildflowersoftexas.com
texasnatureonline.com


Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jun 2, 2015 2:50 PM CST
Boy, those stems on the plants in the links sure look the same. I do know that it wasn't planted recently and has probably been there for years - just never saw it in bloom before. While it's located in oak/hickory woodland, we're only 20 miles or so from the IN dunes where it's considered an invasive. I'd say the height of the tree is probably around 8 to 10 feet. Or it's possible my dad dug it up down around the Kankakee River where he had property.
Should I consider this one solved?

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bamira
Jun 2, 2015 2:51 PM CST
on the second picture is seeing a broken stem, such as Robinia hispida
the leaves are rounded, I don't know if she is hairy Whistling

Thumb of 2015-06-02/bamira/a853a2

[Last edited by bamira - Jun 2, 2015 3:05 PM (+)]
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Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jun 2, 2015 2:53 PM CST
Second pic - it's hard to tell if the stems are hairy because the pic gets really grainy when I enlarge it.
Kentucky 😔 (Zone 6a)
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Swayback
Jun 2, 2015 4:09 PM CST
[quote="sooby"]Could it be Robinia hispida, rose acacia/bristly locust?

Edited to add links:
http://www.illinoiswildflowers.info/trees/plants/bristly_loc...
]https://www.uwgb.edu/biodiversity/herbarium/trees/robhis01.h...

Just on the common names alone, if guess that right, seem to describe it well!
It does appear to match the pics too, or close, but the name seems very apt.
Please tree mail me for trades, I'm ALWAYS actively looking for more new plants, and love to trade!
springfield MO area (Zone 6a)
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Frillylily
Jun 2, 2015 4:23 PM CST
https://www.google.com/search?q=locust+tree+with+pink+flower...
Name: Clint Brown
Medina, TN (Zone 7b)
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clintbrown
Jun 2, 2015 4:42 PM CST
That looks like it! I tip my hat to you.
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jun 2, 2015 4:43 PM CST
Thanks for the link, Frilly. I'll get dizzy checking out all of the pics. I never thought that a locust could bloom so beautifully.
I did email the links for the bristly locust to my sister so she can check it against the actual tree but I think we've got a match. Has to be a native of some sort as my dad would never spend the money on shrubs, trees or perennials.
Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
Celebrating Gardening: 2015 Plant Identifier Tip Photographer Garden Sages Garden Ideas: Master Level Hibiscus
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Horntoad
Jun 2, 2015 4:54 PM CST
According to BONAP it does grow wild in Indiana, but it is considered adventive.

http://bonap.net/MapGallery/County/Robinia%20hispida.png

wildflowersoftexas.com
texasnatureonline.com


Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jun 2, 2015 5:59 PM CST
Yep - it would seem so.

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