Plant ID forum: Helianthus sp

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Name: Myriam
Ghent, Belgium (Zone 8a)
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bonitin
Nov 20, 2011 4:48 AM CST
I have been breaking my head what specie this Helianthus could be.
Since a couple of years it grows in the local nature reserve.
It is one of the latest flowers to bloom making it a valuable food source for insects..
It grows very tall 1,5 to 1,8 m, the leaves feel very coarse.
Flowers are big (7-8cm)
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Name: Dave Whitinger
Jacksonville, Texas (Zone 8b)
Charter ATP Member Region: Texas Master Gardener: Texas Permaculture Raises cows I was one of the first 300 contributors to the plant database!
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dave
Nov 20, 2011 8:36 AM CST

Garden.org Admin

Well, the stem and foliage sure look like "Long leaf sunflowers" or Helianthus longifolius.

http://alabamaplants.com/Yellowopp/Helianthus_longifolius_pa...
Name: Myriam
Ghent, Belgium (Zone 8a)
Charter ATP Member Ferns Native Plants and Wildflowers Cat Lover Birds Bee Lover
Organic Gardener I was one of the first 300 contributors to the plant database! Frogs and Toads Plant Identifier
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bonitin
Nov 20, 2011 9:59 AM CST
Thanks Dave, but I have the impression that the leaves on mine are broader and bigger, hairier too, the flowers on mine look bigger and fuller and have dark centres, so I'm not sure..maybe it is a natural crossing with another Helianthus sp..or maybe Helianthus longifolius is very variable..
Name: Ginger
Fountain, Florida (Zone 8b)
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gingin
Nov 20, 2011 11:34 AM CST
how about helianthus angustifolius
Each cloud has a silver lineing if only you look for it.
Name: Dave Whitinger
Jacksonville, Texas (Zone 8b)
Charter ATP Member Region: Texas Master Gardener: Texas Permaculture Raises cows I was one of the first 300 contributors to the plant database!
Garden Ideas: Master Level Beekeeper Garden Sages Avid Green Pages Reviewer Celebrating Gardening: 2015 Plant Identifier
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dave
Nov 20, 2011 12:48 PM CST

Garden.org Admin

We had a couple other H. augustifolia ids:

The thread "Swamp Sunflower (Helianthus angustifolius)" in Plant ID forum
The thread "Mexican sunflower???" in Plant ID forum
Name: Myriam
Ghent, Belgium (Zone 8a)
Charter ATP Member Ferns Native Plants and Wildflowers Cat Lover Birds Bee Lover
Organic Gardener I was one of the first 300 contributors to the plant database! Frogs and Toads Plant Identifier
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bonitin
Nov 20, 2011 1:30 PM CST
Thanks Ginger and Dave! Smiling
Yes, Helianthus angustifolia looks a closer match in the flowers, also its habitat, 'mine' were growing on damp soil, the leaves feel like sandpaper indeed, but then I still think the leaves on mine look bigger and broader than on the pics of H.angustifolia...
Name: Janet Super Sleuth
Near Lincoln UK
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JRsbugs
Nov 20, 2011 3:06 PM CST
Helianthus pauciflorus is possible? The petals and leaves are not quite a match I think, or don't think..

http://homepage.mac.com/chpeirce/wildflowers/compositae/prai...

http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=HELPAU

http://luirig.altervista.org/flora/taxa/floraspecie.php?gene...

Name: Myriam
Ghent, Belgium (Zone 8a)
Charter ATP Member Ferns Native Plants and Wildflowers Cat Lover Birds Bee Lover
Organic Gardener I was one of the first 300 contributors to the plant database! Frogs and Toads Plant Identifier
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bonitin
Nov 20, 2011 3:28 PM CST
Janet, that looks a perfect match!! I feel it, it is the right one! Hurray!
Name: Janet Super Sleuth
Near Lincoln UK
Charter ATP Member Organic Gardener Garden Photography Bee Lover Dragonflies Cat Lover
Butterflies Birds Plant Identifier I was one of the first 300 contributors to the plant database! Spiders!
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JRsbugs
Nov 20, 2011 3:58 PM CST
Well it does look as close as you can get I think!

I found that because I had saved the Italian site and searched all the species they had listed. Big Grin
Name: Myriam
Ghent, Belgium (Zone 8a)
Charter ATP Member Ferns Native Plants and Wildflowers Cat Lover Birds Bee Lover
Organic Gardener I was one of the first 300 contributors to the plant database! Frogs and Toads Plant Identifier
Image
bonitin
Nov 20, 2011 5:20 PM CST
Thanks, Janet, The English popular name; 'Stiff Sunflower' is a perfect description too of its growing habit! Smiling

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