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Euphorbia cyparissias (cypress spurge)
...stem 1-3 x 0.1-0.3 cm).: Euphorbia esula Synonyms: Galarhoeus cyparissias, Tithymalus cyparissias Fa...
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Symphyotrichum tradescantii (Tradescant's American-aster)
...8–15 x 0.3–3.5 cm, and capitula with 20–40 ray flowers, the rays 4.5-12 mm long (vs. S. tradescantii, with stems 1–6 dm tall, 1–3 mm thick at the base, leaf blades 3–10 x 0.3–1 cm, and capitula with 1...
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Hybanthus concolor (green-violet)
...cm–100.0 cm. Leaf stalk length: 10.0 mm–20.0 mm. Leaf spines: there are no spines on the leaf edges. ...
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Polygonum ramosissimum (yellow-flowered knotweed)
...… 12a. P. ramosissimum ssp. ramosissimum1b. Flowers barely or not exserted from their bracteoles, on pedicels 1–2 mm long; plants nearly homophyllous; leaf blades rounded to obtuse ...
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Symphyotrichum cordifolium (heart-leaved American-aster)
... 11-15. Ovary profile: in profile, the ovary is roughly elliptical (widest in the middle, tapering to both ends). ...
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Rumex obtusifolius (bitter dock)
... 1.2 mm–1.7 mm. Petal shape: the petal outline is roughly triangular. Petal tip shape: ...
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Ranunculus recurvatus (hooked buttercup, hooked crowfoot)
...to 1 mm long, achenes with a very short, straight beak ca. 0.1 mm long, and stems not thickened at the base (vs. R. recurvatus, with anthers longer than 1 mm, achenes with a hooked beak 1–1.4 mm long,...
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Capnoides sempervirens (pink-corydalis)
... 11.0 mm–18.0 mm. Hooked hairs on underside of leaf: no. Plant odor: the plant does...
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Salix humilis (prairie willow)
...0.7-1.2 cm, borne on leaf stalks 0.5-3 mm long, and fruiting catkins 10-18 mm long (vs. S. humilis, with leaf blades 3-10 x 1-2.5 cm, borne on leaf stalks 3-7 mm long, and fruiting catkins mostly 15-4...
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Polygala ambigua (alternate milkwort)
... 1.3 mm–1.7 mm. Plant odor: the plant does not have much of a smell. Leaves per node: ...