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Salix lucida (shining willow)
...7.5-17 mm wide, and capsules 3-5 mm tall (vs. S. lucida, which are shrubs to 6 m tall, leaf blades 11-43 mm wide, and capsules 5-7 mm tall).: Salix nigra leaf blades 3...
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Phaseolus coccineus (scarlet bean)
...corolla 10–15 mm long, pink-purple to nearly white, inflorescence often not exceeding the subtending leaves, and plants upright or twining (vs. P. coccineus, with the corolla 15–20 mm long, red or bri...
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Parthenium hysterophorus (Santa Maria feverfew)
... 10.0 NA–16.0 NA. Seed tuft type: the pappus is made of flat scales that are not split or frayed at the tips. ...
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Hymenoxys odorata (poison rubberweed)
... 11-15. Leaf blade shape: the leaf blade is linear (very narrow with more or less parallel sides). Style branche...
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Mikania scandens (climbing hempvine)
... 11 or more. Top of disk flower ovary: NA. Flower head profile: the disk is flat or ne...
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Ratibida pinnata (gray-headed Mexican-hat)
...cylindric, 10–50 x 7–12 mm, plants from a taproot, and pappus usually consisting of 1 or 2 tooth-like scales (vs. R. pinnata, with disk ellipsoid to spherical, 10–25 x 10–18 mm, plants from fibrous ro...
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Cryptotaenia canadensis (Canada honewort)
...S1), concern (code: C) Information from Dichotomous Key of Flora Novae Angliae: 1. Cryptota...
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Eleocharis tenuis (slender spikesedge)
...fields.1a. Achenes yellow, with 10–14 horizontal ridges through the length; stems sharply 4-angled, usually deeply sulcate, up to 0.8 mm wide; some or all of the upper leaf sheaths with a stout apica...
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Tagetes minuta (miniature marigold)
... 1-5. Plant odor: the plant has a pleasant odor, such as licorice, fruit or resin. Width of flower head base: ...
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Napaea dioica (glade-mallow)
... 13 or more. Plant height: 100.0 cm–200.0 cm. Plant color: the leaves or young stems of the ...