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Utricularia intermedia (flat-leaved bladderwort)
... 10.0 mm–16.0 mm. Stigma position: the stigmas are positioned at the tip of the style. Flower orientation: ...
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Viola pubescens (yellow forest violet)
...types.1a. Stems solitary, with 0 or 1 basal leaves; leaf blades densely pubescent; stipules broad-ovate, with an obtuse apex … 21a. V. pubescens var. pubescens1b. Stems 2 or...
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Oenothera pilosella (meadow evening-primrose)
...3–10 mm long, style 3–10 mm long, anthers 1.5–2.5 mm long, and inflorescence of scattered flowers, the axis and apex commonly drooping in bud (vs. O. pilosella, with petals 10–25 mm long, style 10–20 ...
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Impatiens capensis (jewelweed, spotted touch-me-not)
... 1.0 None–1.0 None. Sap: the sap is clear and watery. Leaf blade primary vein pattern: ...
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Polygonum aviculare (dooryard knotweed)
...(3.4–) 4.2–15 (–19) times as long as wide; flowers usually uniformly distributed along stems and branches, in 1- to 3 (–5)-flowered clusters; achenes often exserted from tepals at maturity4a. Sheathi...
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Chamaedaphne calyculata (leatherleaf)
...mm–17.0 mm. Leaf stalk shape: the leaf stalk is not flattened. Inflorescence position: the inflores...
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Bromus secalinus (rye brome)
...ligules 1-1.5 mm long, pubescent, and anthers 3-5 mm long (vs. B. secalinus, with ligules 2-3 mm long, glabrous, and anthers 1-2 mm long).: Bromus arvensis Sy...
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Sherardia arvensis (blue field-madder)
... 1. Flower symmetry: there are two or more ways to evenly divide the flower (the flower is radially symmetrical). ...
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Eriophorum gracile (slender cottongrass, slender cottonsedge)
... 1.0 mm–2.0 mm. Floral scale translucent: the floral scales are opaque. Inflorescence bracts: ...
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Ellisia nyctelea (Aunt Lucy)
... 1. Parasitism: the plant is not parasitic. Leaf blade base: the leaf has a distinct l...