Plant ID forum: Lanceleaf Arrowhead (Sagittaria lancifolia); growing in water

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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
Apr 24, 2015 5:32 PM CST
Does anyone recognize this plant? It's growing in fresh water behind a neighbors house across from my backyard. I zoomed as close as I could get and cropped a couple of pictures for (hopefully) a better view. I've lived here four years and never noticed blooms but it may just be that I missed them cause I don't often pay much attention to that particular area. These plants seem to be @ 3 feet above the water line ... water level is probably about 1 foot right there.
Thumb of 2015-04-24/plantladylin/503f3b

My first thought was possibly Yellow Flag (Iris pseudacorus) but I really don't have a clue.

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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!
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Horntoad
Apr 24, 2015 6:02 PM CST
Lanceleaf Arrowhead (Sagittaria lancifolia)


https://www.google.com/search?q=sagittaria+lancifolia&rlz=1C...
wildflowersoftexas.com
texasnatureonline.com


Name: Jean
Prairieville, LA (Zone 9a)
Charter ATP Member Plant Identifier The WITWIT Badge Garden Sages Celebrating Gardening: 2015
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Moonhowl
Apr 24, 2015 8:52 PM CST
I agree, Jay. Lin it is considered invasive.

http://plants.ifas.ufl.edu/node/388
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
Apr 24, 2015 9:02 PM CST
Hmmm... I have had it in my rain garden for a couple of years with no problem. Now I have one of the smaller species that seems a bit aggressive.
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Name: Jean
Prairieville, LA (Zone 9a)
Charter ATP Member Plant Identifier The WITWIT Badge Garden Sages Celebrating Gardening: 2015
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Moonhowl
Apr 24, 2015 9:23 PM CST
I think the genus as a whole may be considered an aquatic invasive in open waterways Jay. Maybe it is only if disturbed that it tends to spread?

http://www.invasive.org/browse/TaxThumb.cfm?fam=15&genus=Sag...
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
Apr 24, 2015 9:54 PM CST
Neither of those sources are showing Sagittaria as an invasive. The first one ( University of Florida) is a list aquatics "and invasive". Not all the plants listed are invasive.
The page you reference at invasives.org is just a list a Sagittaria. If you go to this page and click on either Federal Noxious Weeds or Aquatics you will only see Sagittaria sagittifolia list. It is not a US native. If you click on State Noxious Weeds you will see that one plus Sagittaria graminea, which is only listed as noxious in Washington State.

http://www.invasive.org/species/weeds.cfm

Thats not to say that other species are not aggressive, they are just not considered invasive, which is a term used to describe species (usually not native to a particular area) which disrupt the natural ecosystem.
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[Last edited by Horntoad - Apr 24, 2015 9:59 PM (+)]
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Name: Jean
Prairieville, LA (Zone 9a)
Charter ATP Member Plant Identifier The WITWIT Badge Garden Sages Celebrating Gardening: 2015
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Moonhowl
Apr 24, 2015 10:05 PM CST
Thank you for clearing that up. My bad. *Blush*
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!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
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plantladylin
Apr 25, 2015 7:51 AM CST
Thumbs up Thanks for the input y'all ... I had no clue of this plant's identity. Apparently there are a few Sagittaria that are native to Florida; S. lancifolia, S. graminea and S. latifolia: http://plants.ifas.ufl.edu/node/389 and the one in my photo sure looks to be and fits the description of S. lancifolia.

~ Eat, Sleep .... Play in the dirt ~
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
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eclayne
Apr 28, 2015 4:34 PM CST

Moderator

Very cool plant. Do the leaves always become sagittate as they mature or are there different forms?
Evan
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
Image
Horntoad
Apr 28, 2015 5:31 PM CST
Every one I have ever seen both wild and in my garden look like the one in the photos.
wildflowersoftexas.com
texasnatureonline.com


Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
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eclayne
Apr 28, 2015 5:39 PM CST

Moderator

Oops, lance *Blush* I was looking at pics of S. latifolia. Thanks Jay!
Evan

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