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Actaea: Dichotomous Key
...(1998). 1a. Axis of inflorescence usually branched (i.e., the inflorescence a panicle); stigma borne on a short, stout style; fruit a follicle; petals represented by linear staminodes ...
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Micranthes: Dichotomous Key
...(5–) 10–20 (–30) cm long; stems 30–100 cm tall; sepals soon reflexed; petals green-white to purple; plants of wet, low ground 2b. Leaf blades (0.8–) 1–5 (–8) cm long; stems 5–40 cm tall; ...
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Koeleria macrantha (prairie Koeler's grass)
...than 1 mm in the distal portion of the segment (vs. K. macrantha, with panicle branches densely pubescent, apex of lemma entire, and rachilla segments glabrous or pubescent with hairs shorter than 1 m...
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Genus: Glyceria (manna grass)
...have 1 vein, and the veins on the lemmas are conspicuous. Torreyochloa has open leaf sheaths, 3-veined upper glumes, and conspicuous veins on its lemmas. Reference: Barkworth and Anderton (2007). Fam...
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Scirpus pendulus (rufous bulrush)
... 1.0 mm–1.2 mm. Floral bristle number: 5-7. Stem leaf blade ligules: the plant has ...
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Eleocharis aestuum (tidal spikesedge)
... 1. Floral bristle relative length: NA. Floral bristle number: 1-4. ...
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Montia fontana (water montia)
...white, 1-2 mm long).: Calandrinia ciliata sepals 3–7 mm long, petals 4–6.5 mm long, and leaves alternate (vs. M. fontana, with sepals 1–2 mm long, petals 1–2 mm long, ...
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Fraxinus excelsior (European ash)
...7–14 x 3–6.5 cm (vs. F. excelsior, with the leaf rachis glabrous to puberulent, but without patches of tomentum, and leaflets mostly 5–11 x 1–3 cm).: Fraxinus nigra ...
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Sporobolus cryptandrus (sand dropseed)
...(1999), based on George (1992); however, George (1999) stated this species could be in RI (i.e., the author is unaware of any collections). Native to North America? ...
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Rosa cinnamomea (cinnamon rose)
...hypanthium 1–2 mm wide, the stigmas exserted 1–2 mm beyond it, leaflets pale green abaxially, and sepals pinnatifid (vs. R. cinnamomea, with the orifice of the hypanthium mostly 2–4 mm wide, the stigm...