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"Bryophyta" .
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"Pottiales" .
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"Oxystegus spiralis" .
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"(Grout) H.A. Crum and L.E. Anderson" .
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"Spiral Oxystegus Moss" .
"Pottiaceae" .
"Oxystegus" .
"Bryopsida" .
"Oxystegus spiralis (Grout) H.A. Crum and L.E. Anderson" .
.
.
"Plantae" .