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- annual with erect stems usually 1 foot tall or less
- upper part of stem with glandular hairs
- leaves strap-shaped or broadly linear, up to 6 inches long
- flowers blue, with 6 lobes, in terminal spikes
- ranges from Yucatan Peninsula across northeastern Mexico to South Texas; disjunct on the Texas Panhandle
- occurs on mudflats around ponds and lakes, including resacas on the Rio Grande delta
- no recent reports from South Texas
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