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Teucrium scorodonia (woodland germander)
...pedicels 1–3 mm long, and calyx scarcely saccate at the base).: Teucrium botrys corolla pink-purple, 11–18 mm long, verticillasters with 3 or more flowers, collectivel...
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Betula nigra (river birch)
... 1 or 2. Wings on fruit: the fruit has one or more wings on it. Twig winter color: red...
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Littorella americana (American shoreweed)
... 1.0 NA–3.0 NA. Seed number: 1.0 NA–1.0 NA. Leaf blade base: the leaf has no stalk. ...
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Bromus erectus (upright brome)
...0.6-1.5 mm long, and lobes at apex of lemma 0.6-1 mm long (vs. B. erectus, with lower glumes 1-veined, anthers 4-6.5 mm long, and lemma lobes shorter than 0.5 mm).: Bromus hordeaceus ...
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Anthemis arvensis (corn chamomile)
... 11-15. Ovary lines or ribs: there are three lines or ribs visible on the ovary. Ray flower color: ...
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Rumex violascens (violet dock)
...only 1 of the inner tepals with an enlarged tubercle on the midrib, with marginal teeth 0.8–1.5 mm long, and basal leaf blades usually truncate to cordate at the base (vs. R. violascens, with inner te...
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Taeniatherum caput-medusae (Medusa-head)
...30-110 mm long, and anthers 0.8-1 mm long).: Secale cereale Synonyms: Elymus caput-medusae Family: Poaceae Genus: Taenia...
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Potamogeton obtusifolius (blunt-leaved pondweed)
... 1.0 mm–3.5 mm. Underwater leaf blade width: 1.0 mm–3.5 mm. Staminate bract edge (Myriophyllum): ...
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Ailanthus altissima (tree-of-heaven)
...with 11-41 leaflets, and fruit with the seed +/- centered within the wing).: Fraxinus americana Synonyms: Ailanthus glandulosa ...
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Chorizanthe pungens (Monterey spineflower)
...3-13 x 1.1-12 cm, and carpellate flowers with the three outer tepals with a spine tip (vs. C. pungens, with leaf blades oblanceolate, mostly 1-5 x 0.4-0.7 cm, and flowers with a 6-parted involucre of ...