Prenanthes altissima Linnaeus (Q6251)
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Prenanthes altissima is a synonym of Nabalus altissimus (Linnaeus) Hooker
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English |
Prenanthes altissima Linnaeus
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Prenanthes altissima is a synonym of Nabalus altissimus (Linnaeus) Hooker
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Statements
taxon/id/Prenanthes altissima Linnaeus
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50–800 m
50 meter
800 meter
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CA-NB
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CA-NS
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CA-ON
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CA-PE
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CA-QC
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US-AL
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US-AR
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US-CT
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US-DE
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US-GA
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US-IL
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US-IN
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US-KY
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US-LA
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US-ME
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US-MD
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US-MA
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US-MI
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US-MO
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US-NH
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US-NJ
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US-NY
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US-NC
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US-OH
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US-OK
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US-PA
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US-RI
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US-SC
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US-TN
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US-TX
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US-VT
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US-VA
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US-WV
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taproots thickened, knotty, tuberous.
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Stems erect, greenish to purplish, glabrous proximally, often tomentulose distally.
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Leaves: proximal present at flowering;
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blades usually ovate or triangular, 4–15 × 2–16 cm, thin, bases truncate to hastate or cordate, margins entire or shallowly dentate, often deeply 3-lobed, faces glabrous or with scattered hairs on veins;
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distal reduced in size and lobing.
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Involucres cylindric, 9–14 × 2–3 mm.
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Calyculi of 4–6, blackish, triangular bractlets 1–4 mm, glabrous.
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Phyllaries (4–) 5 (–6), pale green, often blackish at bases and apices, linear to lanceolate, 10–12 mm, glabrous or sparsely hairy.
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Florets (4–) 5 (–6);
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corollas pale-yellow to greenish yellow, 7–15 mm.
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Cypselae brown to tan, subcylindric, subterete, 4–5 mm, indistinctly 5–10-ribbed;
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pappi usually whitish or pale-yellow, sometimes reddish-brown, 5–6 mm. 2n = 16.
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