Vernonia noveboracensis |
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New York ironweed |
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Habit | Plants 8–12(–20) dm. |
Stems | puberulent, glabrescent. |
Leaves | mostly cauline; blades ± lanceolate, 9–15(–25+) cm × 15–45(–60+) mm, l/w = (3.3–)4–6+, abaxially scabrellous, tomentose, or pannose, resin-gland-dotted, adaxially scabrellous, often resin-gland-dotted. |
Peduncles | 2–35 mm. |
Involucres | ± hemispheric, 6–10 × 7–10 mm. |
Florets | 30–45(–65). |
Phyllaries | 35–60+ in 4–6+ series, sparsely tomentulose, glabrescent, margins ciliolate, the outer lanceolate to subulate, 1–3 mm, inner oblong, 7–9+ mm, tips subulate to filiform. |
Heads | in corymbiform to paniculiform arrays. |
Cypselae | 3.5–4+ mm; pappi fuscous to purplish, outer scales 20, 0.2–0.6+ mm, contrasting with 30–40+, 5–7+ mm inner bristles. |
2n | = 34. |
Vernonia noveboracensis |
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Phenology | Flowering Aug–Oct. |
Habitat | Abandoned fields, marshes, roadsides |
Elevation | 10–600 m (0–2000 ft) |
Distribution |
AL; CT; DC; DE; FL; GA; MA; MD; NC; NJ; NY; PA; RI; SC; TN; VA; WV
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Source | FNA vol. 19, p. 209. |
Parent taxa | Asteraceae > tribe Vernonieae > Vernonia |
Sibling taxa | |
Synonyms | Serratula noveboracensis, V. harperi, V. noveboracensis var. tomentosa |
Name authority | (Linnaeus) Michaux: Fl. Bor.-Amer. 2: 95. (1803) |
Web links |