Plant ID forum: Commelina diffusa

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Name: Tiffany
Opp, AL (Zone 8b)
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purpleinopp
Aug 31, 2015 10:53 AM CST
Volunteer, tiny flowers. Very succulent (takes forever to shrivel & finish dying after being pulled.) TIA!



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Name: Porkpal
Richmond, TX
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porkpal
Aug 31, 2015 11:51 AM CST
Wandering Jew (Tradescantia sillamontana), perhaps?
Porkpal
Name: Lin
Florida (Zone 9b)
Region: United States of America Morning Glories Region: Florida Houseplants Charter ATP Member I was one of the first 300 contributors to the plant database!
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plantladylin
Aug 31, 2015 11:55 AM CST
Not White Velvet (Tradescantia sillamontana) but it does look to be Commelina of some type, perhaps Virginia dayflower (Commelina virginica) ?
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Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Bulbs Foliage Fan Tropicals Butterflies Garden Sages Cactus and Succulents
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purpleinopp
Aug 31, 2015 12:41 PM CST
TY for the reply, Porkpal & Lin! Appreciate trying to help very much!

I've narrowed it down to one of those 2 species mentioned in subject line (I think,) but can't see the diff between those from other peoples' pics. Was hoping to maybe hear from someone who has an ID key (and unlike me) understands enough plant anatomy words to use it. I can't find one to try to muddle through.

More pics available if needed, just need to know what to capture.

Remembered I took this pic of it when I started growing.


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Name: Janet Super Sleuth
Near Lincoln UK
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JRsbugs
Aug 31, 2015 12:46 PM CST
I think you need to look at finer details, e.g. the leaf sheath and spathe on Commelina virginica ..

http://www.missouriplants.com/Bluealt/Commelina_virginica_pa...

C. communis ..

http://www.missouriplants.com/Bluealt/Commelina_communis_pag...

http://www.southeasternflora.com/view_flora.asp?plantid=206

C. diffusa ..

http://www.missouriplants.com/Bluealt/Commelina_diffusa_page...

C. erecta ..

http://www.wildflowersoftexas.com/commelina-erecta.html

C. caroliniana is difficult to find except on Japanese sites.

The list for Alabama ..

http://luirig.altervista.org/flora/taxa/north-america.php?st...
Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
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purpleinopp
Aug 31, 2015 1:04 PM CST
TYVM, Janet. I will take more pics in the morning. This plant looks like it's dying all afternoon, no flowers open.

I've given up using luirig.altervista as a resource at all, found so many inaccurate pics over the yrs. The top 3 pics at that link page don't look like C. communis because there's no brown dot on the big yellow things, and the white wisker-like things end in blue balls. The missouriplants pic shows C. communis so well, much bigger flowers. C. erecta also has much bigger blooms.

USDA plants also mentions C. caroliniana but if it's so rare that nobody can get a pic of it to put on reliable databases, it's probably not what sprouted in my yard in about 4 places. I'd discounted that species also for that reason.
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Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Aug 31, 2015 1:16 PM CST
I have Commelina growing wild here but the blue is more intense.
Name: Janet Super Sleuth
Near Lincoln UK
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JRsbugs
Aug 31, 2015 1:29 PM CST
Commelina flowers usually only open in the morning.

I only use lurig. altervista to get a list of plants for a particular state, and if there's line drawings which might help.
Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
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purpleinopp
Aug 31, 2015 1:31 PM CST
Hi Cindy! I was really hoping this would be C. erecta, which I would welcome, but then it bloomed... I don't think anybody not looking for the bloom of this plant would ever notice it.

If you look at the links Janet provided you can see wonderful pics of C. communis & erecta. There are some great pics of both in the DB here also. Both have significantly sized flowers, and are reportedly present in your state on USDA plants. If you can't decide, take some pics & start a discussion for it. Look for open blooms in the mornings.
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Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Aug 31, 2015 4:49 PM CST
The flower color of C. communis is pretty much the same color as my native one here. I'll have to hunt some down to check.
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
Aug 31, 2015 9:05 PM CST
I'm almost positive it is either C. diffusa or C. caroliniana. Without closer inspection I couldn't guess which.
I have C. erecta, C. virginica and C. diffusa.

This is C. diffusa
Thumb of 2015-09-01/Horntoad/395693 Thumb of 2015-09-01/Horntoad/1be704

Thumb of 2015-09-01/Horntoad/222519

wildflowersoftexas.com
texasnatureonline.com


Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Bulbs Foliage Fan Tropicals Butterflies Garden Sages Cactus and Succulents
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purpleinopp
Sep 13, 2015 3:03 PM CST
TY! Finally was able to catch the blooms open when I was home & not raining.








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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
Sep 13, 2015 4:47 PM CST
The spathe on your plant is distinct (open from end to end) so that rules out everything except Commelina communis, C. dianthifolia, C. caroliniana, and C. diffusa. The closest record of C. dianthifolia to you is in West Texas. The spathe is the wrong color and the flower is the wrong color and structure for C. communis, which leaves only C. caroliniana and C. diffusa. The closest C. caroliniana is recorded to you is Baldwin County. Although C. diffusa is not recorded in your county, it is recorded in every county surrounding you including those in Florida, so it is likely in your county also. The only thing I can positively see that makes me think it is C. diffusa is the spathe shape. Flora of North America say the the spathe of C. caroliniana is "not at all to slightly falcate" (sickle shaped), C. diffusa is "usually distinctly falcate". Yours to me appears to be distinctly falcate.
wildflowersoftexas.com
texasnatureonline.com


Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Bulbs Foliage Fan Tropicals Butterflies Garden Sages Cactus and Succulents
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purpleinopp
Sep 14, 2015 3:43 PM CST
TY so much for your efforts! Took some more pics. Going to call it diffusa, barring any objections.






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