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Ipomoea lacunosa (white morning-glory)
...sepals 13–20 mm long, obtuse or rounded at the apex, eciliate (vs. I. lacunosa, with the corolla usually white, 10–23 mm long, and sepals 10–15 mm long, acuminate at the apex, often abrubtly so, hirsu...
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Iris domestica (blackberry-lily)
... 1.0 None–1.0 None. Leaf blade base: the leaf blade clasps the stem at the base, or the leaf blade goes all the way around the stem, s...
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Guizotia abyssinica (niger-seed)
... 11-15. Leaf blade length: 30.0 mm–100.0 mm. Disk flower reproductive parts: the disk flower...
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Platanthera huronensis (Lake Huron bog green orchid)
...5–12 mm long, anthers nearly parallel or slightly diverging basally, separated apically 0.6–1.5 mm, and spur 4–12 mm long, cylindric to slender-clavate).: Platanthera aquilonis ...
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Smilax hispida (bristly greenbrier)
...0.5–1.5 cm long, and berry glaucous (vs. S. hispida, with prickles thin, bristly, nearly black at maturity, peduncles 1.5–6.5 cm long, and berry not glaucous).: Smilax rotundifolia ...
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Agrostis exarata (spike bentgrass)
... 1.0 mm–11.2 mm. Inflorescence branch length: 1.0 cm–4.0 cm. Basal leaves: the plant has ...
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Hypericum frondosum (cedar glade St. John's-wort)
...and 10 mm long or shorter (vs. H. frondosum, with the inflorescence usually of solitary, terminal flowers, longer sepals 10–15 mm long, and petals 10–20 mm long).: Hypericum prolificum ...
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Euonymus atropurpureus (eastern spindle-tree)
...to 15 flower. Its leaves are hairy on the underside. This species is considered native to North America (even Endangered in Florida), but populations in New England are thought to be introduced. De...
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Vicia sepium (hedge vetch)
... 1.0 NA–1.0 NA. Leaf teeth and lobes: the edge of the leaf blade is entire (has no teeth or lobes). Hair betw...
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Ambrosia psilostachya (perennial ragweed)
... 11-20. Disk flower number: 1-5. Stem internode hairs: the stem has hairs between the ...