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Quercus alba (eastern white oak)
... 11. Stamen number: 5. Bark texture: the bark of an adult plant is ridged or plated. ...
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Coreopsis palmata (stiff tickseed)
... 11-15. Leaf arrangement: opposite: there are two leaves per node along the stem. Hairs on upper side of leaf bl...
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Danthonia californica (California oatgrass)
...awns, 19–26 mm long, and glumes 5- to 11-veined (vs. D. californica, with spikelets, excluding the awns, up to 18 mm long, and glumes 1- to 5-veined).: Avena sativa sp...
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Sagittaria: Dichotomous Key
...or 1 facial wings; inflorescence with 2–10 whorls of pedicels 6a. Beak of the achene 0.1–0.5 mm long, erect; petals 7–10 mm long; achenes 1.8–2.6 mm long; floating leaves with sagittate-o...
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Lemna: Dichotomous Key
...with 10% sodium hypochlorite (NaOCl). 1a. Thalli (3–) 6–15 mm long, tapering to a long stalk, with distally denticulate margins; lateral thalli remaining attached to the parent thallus...
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Group 3: Monocots: Dichotomous Key
...[Figs. 164, 174, 176], with 1 or 2 stamens; pollen cohering in pollinia; seeds minute, dust-like 26b. Flowers actinomorphic [Figs. 136, 138], with 3 or 6 stamens; pollen separate, not coh...
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Luzula: Dichotomous Key
... 1b. Flowers clustered in glomerules of 3–12 (–20), the glomerules all at the tips of branches or 1 or 2 of the central ones sessile (rarely all congested) [Figs. 153, 154, 155] ...
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Cirsium: Dichotomous Key
...Involucre 10–15 (–20) mm tall; involucral bracts lacking spine tips or with short, vestigial spines up to 1 mm long; leaf blades adaxially with sparse, septate hairs 1b. Neither the stem ...
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Lepidium: Dichotomous Key
...(1993), but specimens are unknown. Reference: Al-Shehbaz and Gaskin (2010). 1a. Silicles with a wrinkled texture due to raised veins or reticulum; racemes borne laterally from the axil...
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Lycopus: Dichotomous Key
...(1.3–) 1.4–1.8 mm wide 4b. Leaf blades borne on evident petioles; rhizomes without tubers; mericarps 0.7–1.3 mm wide 5a. Leaf blades pubescent abaxially with hairs 0.01–0.5 ...