Wildflowers Identified: Marsh St. Johnswort
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Marsh St. Johnswort has these characteristics:
- 5 petals
- several flowers on stem
- 3/8 to 5/8 inches flower width
- whitish flower color
- pink to red flower color
- blue to purple flower color
- blooms in July
- blooms in August
- blooms in September or later
- plant height one foot or less
- plant height one foot to two feet
- plant height two feet or more
- leaf petiole absent (has no leafstalk)
- opposite one another leaf arrangement on the stem
- smooth leaf edges
- branched leaf veins
- simple leaves about 1 1/2 to 5 times as long as wide
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Eric Haines,
erich@acm.org