Plant ID forum→Tall grass

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Poland
Garden Photography
ajzcidelg
Sep 11, 2019 6:08 PM CST
Warsaw, Poland. I'm now not sure if that fluffy stuff in the fifth picture is the same plant as in the others. If anyone is not happy with me starting so many threads say something.

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[Last edited by ajzcidelg - Sep 11, 2019 6:12 PM (+)]
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Name: Porkpal
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porkpal
Sep 11, 2019 7:26 PM CST
I am enjoying all your plant questions, although I am no help. The leaves look like Johnson Grass, but the bloom, seed head does not.
Porkpal
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Sep 11, 2019 9:44 PM CST
I'm enjoying your posts also. Keep posting. Smiling

#1 - #4 and #6 are grass but photo #5 is not the same plant.
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Name: Tofi
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tofitropic
Sep 11, 2019 11:12 PM CST
Looks like a Mischanthus..?
Poland
Garden Photography
ajzcidelg
Sep 12, 2019 3:07 AM CST
@tofitropic @DaisyI I browsed some pictures and it looks like Mischanthus. And probably Miscanthus sinensis at that. If it is then #5 would actually be the same plant as the rest. Look at the picture of dehiscing seeds - https://www.eddmaps.org/ipane/...
Could someone tell me any tips on how to differentiate this genus morphologically? Is that white line on the leaf a characteristic?
Name: Rick R.
Minneapolis, MN, USA zone 4
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Leftwood
Sep 12, 2019 8:25 AM CST
Miscanthus sacchariflorus:
-- does not form clumps and spreads aggressively underground by rhizomes (roots)
-- seed head does not curl at maturity as in your pic #5
Miscanthus sinensis:
-- grows in clumps that get slowly get larger in time, but does not spread aggressively
-- seed head does curl at maturity as in your pic #5
Miscanthus floridulus
-- spread undrground, 2-3 or more meters tall.

the center white line in the leaf blade is not significant for identification.

There are many types (cultivars) of M. sinensis, and they are extremely difficult to tell apart from photographs.
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Poland
Garden Photography
ajzcidelg
Sep 12, 2019 9:43 AM CST
@Leftwood Thanks that's helpful but I wanted to know how to differentiate Miscanthus from other genera in Poaceae as I've never identified a plant from this family or even order before. I think in these terms the white line is a characteristic.
[Last edited by ajzcidelg - Sep 12, 2019 9:45 AM (+)]
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Poland
Garden Photography
ajzcidelg
Sep 12, 2019 12:39 PM CST
OK, I browsed for a considerable time in different Polish Poaceae genera and I think I'm confident that this is Miscanthus.
Name: Rick R.
Minneapolis, MN, USA zone 4
I was one of the first 300 contributors to the plant database! Garden Sages The WITWIT Badge Garden Photography Region: Minnesota Hybridizer
Seed Starter Plant Identifier Million Pollinator Garden Challenge
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Leftwood
Sep 12, 2019 12:48 PM CST
Perhaps yes, the white midrib might be helpful with the genus differentiation. In the middle USA where I am, at least, there are no other grasses that could be mistaken for a Misscanthus species. But in Europe? I can't be possitive. I would first narrow your choices by the shape of the structure of the flower head (seed head) and shape and placement of the seeds on the flower head.

I would still bet money that it is a Miscanthus, though. Smiling
When the debate is lost, slander becomes the tool of the losers. - Socrates
Poland
Garden Photography
ajzcidelg
Sep 12, 2019 1:23 PM CST
I found a couple of genera with species that have white midrib and can be found in Poland. In my list there's 14 species.

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