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Group 7: Herbaceous angiosperms with superior ovaries and zygomorphic flowers: Dichotomous Key
...placentation free-central 2b. Plants not insectivorous; flowers with 4–6 stamens; placentation axile or parietal 3a. Stamens numerous; both the calyx and corolla spurred, the...
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Eutrochium dubium (coastal plain Joe-Pye weed)
...more free-standing stems. Height of flower head base: 6.5 mm–9.0 mm. Final leaf segment length (compound lvs only): 0...
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Lysimachia ciliata (fringed yellow-loosestrife)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Bracts in plantain (Plantago): ...
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Spergula arvensis (corn spurry)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Stipule shape: ...
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Oclemena nemoralis (bog aster, bog nodding-aster)
...more free-standing stems. Scale tip: NA. Flower head outer flowers: at the outer edge of the flowe...
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Comandra umbellata (bastard-toadflax)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Mericarp segment shape (Desmodium...
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Bidens pilosa (hairy beggar-ticks)
...more free-standing stems. Leaf blade flatness: the leaf is flat (planar) at the edges. Plant lifespan: ...
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Portulaca oleracea (common purslane)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Nectar spur: ...
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Saponaria officinalis (common soapwort)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Style petal-like: ...
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Symphyotrichum lanceolatum (lance-leaved American-aster)
...more free-standing stems. Leaf spines: there are no spines on the leaf edges. Final leaf segment length (compound lvs only):...