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Group 10: Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels: Dichotomous Key
...Plants free-floating, rootless, aquatic; leaves 2- to 4-times dichotomously forked [Fig. 51]; perianth composed of 7–15 basally connate sepals; fruit an achene with 2–15 marginal spines 1...
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Setaria viridis (green foxtail)
...falling free from the more persistent glumes, and mature caryopsis yellow to red or brown to black (vs. S. viridis, with the fertile lemma evidently transversely rugulose, dull, disarticulation below ...
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Hieracium robinsonii (Robinson's hawkweed)
...more free-standing stems. Flower head profile: the disk is flat or nearly flat across the top. Leaf blade length: ...
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Corrigiola litoralis (strapwort)
...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. Fruit locules: ...
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Hieracium murorum (wall hawkweed)
...more free-standing stems. Disk flower number: 0. Hairs on upper side of leaf blade: the upper side...
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Atriplex: Dichotomous Key
...branches free and not rejoining to form a reticulum) 4a. Fruiting bracteoles obovate-orbicular to obtriangular, with 3–5 (–7) apical teeth [Fig. 323]; lower leaf blades oval or broad-obl...
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Tussilago farfara (coltsfoot)
...more free-standing stems. Seed hair tuft color: the pappus hairs are white or off-white. Leaf arrangement: ...
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Thymophylla tenuiloba (Dahlburg-daisy)
...more free-standing stems. Bases of bract appendages: NA. Disk flower color: yellow. ...
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Calandrinia ciliata (fringed redmaids)
...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. Fruit locules: ...
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Hieracium maculatum (spotted hawkweed)
...more free-standing stems. Spines on plant: the plant has no spines. Disk flower color: NA. ...