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Sagittaria Species

Posted by jekeesl Central AR Z7 (My Page) on
Thu, Aug 23, 12 at 17:09

I found an unusual Sagittaria specimen this morning along a slough. It was standing just out of the water, and was growing in fairly heavy shade. Leaves were to 8.5 inches tall, with blades averaging 2 inches wide by 3.5 inches long. The inflorescence was 19 inches tall, with compound umbels starting 10 inches above the ground. Lateral peduncles were up to 6 inches long. All peduncles were triangular in cross-section. Each of the 6 lateral branches off the inflorescence had three bracts underneath. The tiny flowers had three white petals, three green bracts, and were only 0.150 inch across.

Photobucket

Photobucket

Photobucket


Follow-Up Postings:

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RE: Sagittaria Species

Are you sure it is Sagittaria and not perhaps Alisma?

Here is a link that might be useful: Options to look at.


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RE: Sagittaria Species

I didn't have a clue where to start looking, and was starting to think it was some odd Sagittaria form that pops up once a century. It looks like this specimen is Alisma subcordatum. Thanks for the nudge in the right direction, deejaus, and for the link to a really good support article.


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RE: Sagittaria Species

You're welcome J.
You seem to take a lot of good photos of interesting subject matter. Do you have a website or a blog? I would love to see it if you do. ;o)

Dee.


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RE: Sagittaria Species

Thanks, deejaus. I don't have anything published, except for unlabeled pictures at Photobucket. About 2 years ago, I started walking 5-10 miles a day. In order to break up the chore, I began taking photos of wildflowers. Then, I ordered a book on Arkansas Wildflowers, and that started me down the path. Now, I've got more than 2 dozen books, plus several keys, and am trying to identify all of the wildflowers in our area (mostly within 10 miles of home). I've got a bit under 900 species on the list, and now am considering whether to branch out to the Graminoids, etc. I do press specimens to document the more rare species with our state Botanists, but mostly just share info and photos with family. It's a great hobby. I did consider blogs, photo sites, etc., but decided there's already way too many mislabeled photos and inaccurate descriptions on the Internet.


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RE: Sagittaria Species

A healthy and fun way to spend some time outdoors.
Don't give away the idea of a blog or something completely though, I think you have something valuable to offer with your nice clear photos.


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RE: Sagittaria Species

A thanks from me as well, deejaus. I spotted a very similar plant recently and first thought a Sagittaria. But upon closer inspection I knew it was something else. I hadn't been back to thinking about what it was until seeing this. I'm pretty sure it too is an Alisma. Many thanks!

FataMorgana


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RE: Sagittaria Species

There's a happy coincidence FataMorgana. This forum works in mysterious ways. LOL.


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RE: Sagittaria Species

Certainly does! ;)

FataMorgana


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