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of the botanical name. 
A plus sign after a Latin name indicates that the species is further divided into varieties or subspecies. 
Your search found 10 taxa.
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Common Name:
Southern Water-plantain
Three whitish petals & many ovaries in a circle on a flattened receptacle, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
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Common Name:
Creeping Burhead, Creeping Water-plantain
Flowers on slender 1" pedicels, in whorls of 5-15 at widely-spaced nodes, per Wildflowers of Tennessee.
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Common Name:
Grassleaf Arrowhead
Flowers to 2.3 cm diameter; filaments shorter than anthers, per Flora of North America.
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Common Name:
Bunched Arrowhead
Flowers usually in 2-4 whorls of 3, upper usually staminate, lower pistillate, per Vascular Flora of the Carolinas.
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Common Name:
Depression Meadow Arrowhead
Flowers to 1.3 cm diameter; filaments shorter than anthers, per Flora of North America.
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Common Name:
Duck Potato
Flowers to 3.3 cm diameter; filaments longer than anthers, per Flora of North America.
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Common Name:
Duck Potato
Flowers in whorls along the stem, the lower pistillate, per Wild Flowers of NC, 2nd edition.
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Common Name:
Broadleaf Arrowhead, Duck Potato
Showy white flowers with 3 petals, the lower flowers usually female, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
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Common Name:
Engelmann's arrowhead
Flowers 18-25mm across, in 2-4 whorls, female below, male above, per Wildflowers of the Sandhills Region.
Your search found 10 taxa. You are on page PAGE 1 out of 1 pages.