5191615898_bbcf9b906e
Photo © Ken-ichi Ueda some rights reserved
Pepperwood Preserve, Sonoma County, CA, USA (Google, OSM)
38.5825004578, -122.6975021362
open

Description

Maybe quillwort, maybe pillwort, but it doesn't seem to have that thickened base I'm seeing in other pictures. Growing at the edge of a cow pond, roots loose in the water.

Update: thanks to Tiggrx for the ID.

Nov. 20, 2010 00:10:31 -0800
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Comments & Identifications

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American pillwort - Photo (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
kueda's ID American pillwort (Pilularia americana)
Posted by kueda over 2 years ago (Flag)
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The Pepperwood plantlist has no pillwort and one quillwort: Isoetes howellii. I've never knowingly seen a pill or quillwort before though so I'm not sure eitherway....

Posted by loarie over 2 years ago (Flag)
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I wouldn't even have looked at it if you hadn't pointed it out, so I'm at a loss, too. The Flickrites pointed out that Isoetes is generally a lot larger, and this pic definitely makes it look that way, with the Mimulus guttatus for scale: http://calphotos.berkeley.edu/cgi/img_query?enlarge=0000+0000+1107+1020

Posted by kueda over 2 years ago (Flag)
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Identification Summary

American pillwort - Photo (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
kueda's ID American pillwort (Pilularia americana)
kueda would like some help identifying this

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Data Quality Assessment

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Observation © Ken-ichi Ueda
Cc-by_small some rights reserved

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