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Persicaria lapathifolia (dock-leaved smartweed)
...thicker, 10-15 mm wide, usually upright or slightly arched (vs. P. lapathifolia, flowers usually with 4 tepals, inflorescence slender, 5-11 mm wide, usually arched or drooping): Persicaria...
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Polemonium reptans (spreading Jacob's-ladder)
...with 19–29 leaflets, and corolla 15–20 mm long (vs. P. reptans, with many or all of the pedicels as long as or longer than the calyx at anthesis, larger leaves with 11–17 leaflets, and corolla 12–16 ...
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Lysimachia nummularia (creeping yellow-loosestrife)
... 1.0 None–1.0 None. Interior flower disk: the flower does not have an interior disc. Stipules: ...
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Chenopodium strictum (oval-seeded goosefoot)
... 17.0 mm–36.0 mm. Sap: the sap is clear and watery. Plant height: 45.0 cm–100.0 ...
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Pedicularis lanceolata (swamp lousewort)
... 1.0 None–1.0 None. Seeds comose: no hairs. Number of carpels: 2.0 NA–2.0 NA. ...
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Stachys byzantina (woolly hedge-nettle)
... 1.0 None–1.0 None. Leaf arrangement: opposite: there are two leaves per node along the stem. Stem hair distr...
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Persicaria pensylvanica (Pennsylvania smartweed)
...5-11 mm wide, usually arched or drooping (vs. P. pensylvanica, flowers with 5 tepals and inflorescence thicker, 10-15 mm wide, usually upright or slightly arched): Persicaria lapathifolia ...
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Trifolium fragiferum (strawberry clover)
... 1.0 None–1.0 None. Stipule shape: the stipules are lanceolate (lance-shaped; widest below the middle and tapering at both ends). ...
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Acalypha gracilens (slender three-seeded-Mercury)
... 11. Leaf blade length: 20.0 mm–50.0 mm. Hair between stem nodes: the stem has hairs between...
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Trifolium subterraneum (burrowing clover)
... 1.0 NA–1.0 NA. Reproductive system: all the flowers have both carpels and stamens (synoecious). Stipule shap...