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Photographer: National Park Service, Yellowstone
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Family Violaceae
Viola nephrophylla Greene
northern bog violet
Viola: a classical Latin name for violets
nephrophylla: from Greek nephros, "kidney," and phyllon, "leaf," thus, with kidney-shaped leaves
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| Status: | Native |
| Plant: | erect, annual/perennial forb, basically stemless; short rhizomes with no stolons |
| Flower: | blue to purple, 5-parted, 3/4"-1 1/4" wide, not widely open, side petals angled forward and bearded, spur petal sometimes bearded; solitary, basal, long-stalked, usually somewhat taller than the leaves; blooms May-June |
| Fruit: | capsule |
| Leaf: | hairless, with heart-shaped base, rounded teeth, main blades wider than long, stalks rising at an angle |
| Habitat: | wet; cold, usually acidic places |
| Notes: | very similar to V. sororia except that the flowers are not widely open |
| (Glossary) |
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