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Agalinis paupercula (small-flowered agalinis)
...6–10 mm long ).: Agalinis neoscotica petals 20-38 mm long and style 15-20 mm long (vs. A. paupercula, with petals mostly 10-20 mm long and style 6-10 mm long).: ...
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Hypericum majus (greater Canada St. John's-wort)
...mostly 1-4 mm wide, with 1 or 3 nerves, and narrow-tapering at base (vs. H,. majus, with leaf blades mostly 3-9 mm wide, with 5 or 7 nerves, and broad-tapering or rounded at base).: Hyperi...
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Ranunculus abortivus (kidney-leaved crowfoot, little-leaf buttercup)
... 1.0 mm–1.5 mm. Fruit length: 1.4 mm–1.6 mm. Leaf stalk attachment to leaf: the petiole a...
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Diapensia lapponica (cushion-plant, pincushion-plant)
... 1.0 None–1.0 None. Stamen number: 5. Leaf blade flatness: the edges of the leaf ar...
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Ranunculus flabellaris (greater yellow water crowfoot, yellow water buttercup)
... 19.0 mm–108.0 mm. Petal length: 7.0 mm–12.0 mm. Stamen number: 13 or more. ...
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Elatine americana (American waterwort)
... 1.0 NA–1.0 NA. Leaf-like branch segments: 0.0 NA–0.0 NA. Fruit length: 0.6 mm–1.2 mm....
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Erodium cicutarium (red-stemmed stork's-bill)
... 10.0 cm–100.0 cm. Sepal number: 5.0 NA–5.0 NA. Fusion of sepals and petals: both the pet...
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Viola sororia (woolly blue violet)
... 1.0 NA–1.0 NA. Staminodes: there are no staminodes on the flower. Leaf blade length: None ...
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Ludwigia palustris (common water-primrose)
...(pedicels 1–2.5 mm long) with sepals 2.5–3 mm long and petals 1.3–3 mm long (rarely the petals absent). Ludwigia palustris is characterized by sessile flowers with sepals 1.1–2 mm long and lack...
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Epigaea repens (trailing-arbutus)
...in 1918. The seeds are dispersed by ants that carry the soft placental tissue back to their nests with the seeds attached. Habitat: anthropogenic (man-made or disturbed habitats), forest edges, fore...