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Dichanthelium: Dichotomous Key
... 13a. Spikelets 0.8–1 (–1.1) mm long; stems 0.3–0.8 mm thick 13b. Spikelets 1.3–2.6 mm long; stems thicker than (0.8–) 1 mm 14a. Spikelets 1.3–2.1 mm long; sheaths gl...
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Euphorbia: Dichotomous Key
... 11a. Petaloid appendages 0.05–0.6 mm long, shorter than wide, usually green; stems 1.5–3 dm tall 11b. Petaloid appendages (0.5–) 1–4.4 mm long, as long as wide or longer, usually...
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Sparganium angustifolium (narrow-leaved bur-reed)
...0.9–1.2 mm long and stigmas 0.8–1.4 (–1.7) mm, whereas Sparganium angustifolium has anthers (0.8–) 0.9–1 (–1.2) mm long and stigmas (0.6–) 0.8–1 (–1.2) mm long, and S. emersum has anthe...
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Calamagrostis stricta (neglected reed grass)
... 1.0 NA–1.0 NA. Leaf sheath hairs: there are no hairs on the surface of the leaf sheath. Lemma awn base: ...
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Quercus coccinea (scarlet oak)
...covering 1/3 to 1/2 of the nut).: Quercus rubra sinuses of leaf blades usually extending less than 1/2 way from the tip of the lobes to the midrib and winter buds 7-10...
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Coreopsis tripteris (tall tickseed)
... 12.0 mm–22.0 mm. Number of bracts at flower head base: 13.0 NA–14.0 NA. Leaf disposition: ...
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Fabaceae: Dichotomous Key
... 11a. Plants lianas; petals blue, blue-purple, or purple (rarely white or pink) 11b. Plants trees or shrubs; petals largely or wholly white, yellow, or pink to red-purple ...
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Asteraceae Group 3: Dichotomous Key
... 11b. Staminate involucre of connate bracts; carpellate involucre with 1 or more series of tubercles or spines [Fig. 371], 3–10 mm tall (in part) 10b. Flowers bisexual or unisexua...
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Rumex: Dichotomous Key
...flowers 1.2–3.5 mm long in fruit, none of them developing tubercles; tepals of staminate flowers 1.5–2 mm long; achenes 0.9–1.5 mm long 3a. Inner tepals of carpellate flowers 1.2–1.7 (–2)...
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Juncus: Dichotomous Key
... 14a. Anthers 1.1–1.6 (–1.8) mm long, 2–4 times as long as the filament; capsules usually shorter than to equaling the length of the tepals; primary bract of the inflorescence mostly 1–5 cm lo...