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Polygala verticillata (whorled milkwort)
... 1.2 mm–1.4 mm. Spur length: 0.0 mm–0.0 mm. Horns in hoods (Asclepias): NA. ...
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Armoracia rusticana (horse-radish)
... 1.0 None–1.0 None. Corona lobe length: 0.0 mm–0.0 mm. Septum in fruit (Brassicaceae): Th...
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Lythrum hyssopifolia (hyssop-leaved loosestrife)
... 1.0 None–1.0 None. Leaf blade base: the leaf has a distinct leaf stalk (petiole). Flower symmetry: ...
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Tribulus terrestris (puncture-vine)
... 1.0 None–1.0 None. Filament surface: the filament is smooth, with no hairs or scales. Hairs on flower stalk:...
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Solidago aestivalis (swamp wrinkle-leaved goldenrod)
... 11-15. Bract shape: the main bracts are linear (long and very narrow). Sap: the sap i...
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Erechtites hieraciifolius (American burnweed)
...marshes.1a. Cypsela body 2–3 mm long, with mostly 10–12 longitudinal ribs; inner (i.e., longer) series of involucral bracts attenuate at apex, 0.5–1.5 mm wide at the scarcely widened base; denuded re...
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Pterospora andromedea (pine-drops)
... 1.0 None–1.0 None. Fruit type (general): the fruit is dry and splits open when ripe. Leaf stalk length: ...
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Braya humilis (alpine northern-rockcress)
...S1), threatened (code: T) Information from Dichotomous Key of Flora Novae Angliae: 1. Bra...
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Menyanthes trifoliata (bog bean, buck-bean)
... 14.0 mm–17.0 mm. Petal length: 7.5 mm–10.0 mm. Stamen relative length: None NA–None N...
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Lupinus perennis (sundial lupine)
...mostly 11-17 leaflets and flowers 15-20 mm long (vs. L. perennis, with leaves with mostly 5-7 leaflets and flowers 12-16 mm long).: Lupinus polyphyllus Synony...