| Physaria ludoviciana |
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Physaria
ludoviciana, formerly known as Lesquerella (Brassicaceae), silvery bladderpod, is an
Illinois-endangered perennial herb. It is found in south-central and
southwestern United States with disjuncts within Illinois and Minnesota. In
Illinois, L. ludoviciana is found in a dry sand prairie associated with a
blowout on a large dune in the Henry Allen Gleason Nature Preserve in Mason
County, Illinois. |
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| Images
and Distribution: |
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*Physaria
photos and distribution maps courtesy of PLANTS
National Database. |
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| Key Findings: |
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Colonies differ in
size and seed production, but vigor of seed is similar. |
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Seed maturity
affects vigor. |
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Seed vigor is
consistent between years. |
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Seed maintains
vigor for at least two years. |
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Can establish
flowering plants in greenhouse. |
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Photoperiod
influences flower development. |
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Preliminary
greenhouse studies suggest that cross-pollination is required. |
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Seeds do not
exhibit dormancy. |
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Large numbers of
seed are produced each year at Henry Allen Gleason Nature Preserve. |
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Comparisons are
being made between Illinois and western populations. |
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Students
Involved (Eastern Illinois University): |
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Jennifer Franklin
(1999) |
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Brent Todd
(2001-2002) |
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Students
Involved (University of Illinois): |
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Shannon Beach, University of Illinois (2000-2002) |
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Ann Claerbout, University of Illinois (2001-2003) |
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Christian Deters, University of Illinois
(2000) |
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