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Croton: Dichotomous Key
...branched 2 or 3 times; staminate flowers with 5 petals; plants monoecious
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Lotus: Dichotomous Key
...1–2 mm long; stipules inconspicuous glands; flowers solitary, borne on axillary peduncles; plants annual 1b. Corolla yellow, 10–14 mm long; basal connate portion of calyx 2.5–3.5 mm long;...
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Lupinus: Dichotomous Key
...leaflets 2–5 (–6) cm long; racemes usually 10–20 cm tall; corollas 12–16 mm long 1b. Leaves with (8–) 11–17 leaflets 7.5–13 cm long; racemes usually 20–40 cm tall; corollas 15–20 mm long ...
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Desmodium: Dichotomous Key
...(1–) 2 or 3 segments, each segment 3.5–5 mm long 9a. Petioles 12–25 (–27) mm long, those of the medial leaves approximately as long as the associated lateral leaflets; stems usually glabr...
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Ajuga: Dichotomous Key
...with 2 small, rounded teeth; stems usually pubescent on opposite faces in lines of decurrence from the leaves, alternating faces at each node; flowers in verticillasters of usually 6 at each node ...
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Sida: Dichotomous Key
...10–20 (–40) dm tall 1b. Leaf blades narrow-ovate to oblong or elliptic, unlobed; petals yellow; calyx angled at the base; gynoecium with 5 carpels; plants 2–6 (–10) dm tall
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Orobanche: Dichotomous Key
...5–25 cm long from near the ground; calyx 5-lobed, without closely subtending bracts; corolla 12–20 mm long, weakly zygomorphic, the 5 lobes subequal 1b. Flowers more than 3 per plant (usu...
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Sanguisorba: Dichotomous Key
...12 or more stamens and 2 carpels 1b. Leaflets mostly 25–80 (–100) mm long; flowers with 4 stamens and 1 carpel 2a. Sepals white, much shorter than the stamens; spikes 3–12 (–...
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Sighting: Sassafras albidum at 42.299, -72.580
...42.299, -72.580 Posted Oct. 24, 2014, 2:53 a.m. by Bio426student33 Description or comments: Leaf blade is simple (lobed or unlobed but not separated into leaflets) - One leaf per node along t...
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Spirodela polyrrhiza (common duck-meal)
...mostly 2–7, all perforating the small, membranous scale at thallus base (vs. S. polyrhiza, with thalli with mostly 7–16 veins, 1–1.5 times as long as wide, and roots numbering 7–21 per thallus, only 1...