Vernonia missurica |
Vernonia pulchella |
|
---|---|---|
Missouri ironweed |
Georgia ironweed |
|
Habit | Plants 6–12(–20+) dm. | Plants 4–7+ dm. |
Stems | puberulent. |
sparsely appressed-puberulent. |
Leaves | mostly cauline; blades elliptic to lance-ovate or lanceolate, 6–16(–20+) cm × 18–48+ mm, l/w = 2.5–4(–6+), abaxially usually puberulent to tomentose or pannose (hairs ± erect, ± curled), seldom glabrate, resin-gland-dotted, adaxially scabrellous, glabrescent, not resin-gland-dotted. |
mostly cauline; blades (mid stem) mostly oblanceolate to lance-linear, rarely ovate, 3–7 cm × (5–)10–20+ mm, l/w = (2.5–)3.5–6+ (bases rounded-truncate), abaxially scabrellous (hairs awl-shaped), resin-gland-dotted, adaxially scabrellous. |
Peduncles | 3–35 mm. |
5–35 mm. |
Involucres | broadly campanulate to urceolate, (6–)7–10+ × 5–9+ mm. |
± campanulate, 6–11 × 5–9 mm. |
Florets | 30–55+. |
14–25(–30+). |
Phyllaries | 50–70+ in 6–7 series, sparsely scabrellous, glabrescent (seldom resin-gland-dotted), margins ciliolate, the outer lanceolate, 1–2 mm, inner linear-oblong to oblong, 6–7(–9+) mm, tips acute or rounded-apiculate. |
40–50+ in 5–6 series, sparsely puberulent, margins arachno-ciliate, the outer subulate to filiform, 3–7 mm, inner lance-attenuate to filiform, 9–10+ mm, tips subulate to filiform. |
Heads | in corymbiform-scorpioid arrays. |
in ± corymbiform to paniculiform arrays. |
Cypselae | 3.5–4; pappi stramineous to whitish, outer scales 25–30, 0.5–1.1 mm, contrasting with 35–40+, 6–8+ mm inner bristles. |
3–3.5 mm; pappi stramineous, outer scales 25–30, 0.6–1.1 mm, contrasting with 30+, 6–7+ mm inner bristles. |
2n | = 34. |
= 34. |
Vernonia missurica |
Vernonia pulchella |
|
Phenology | Flowering Jul–Sep. | Flowering Jul–Sep. |
Habitat | Prairies, loamy to sandy soils | Low, wet places in pine woods |
Elevation | 30–200 m (100–700 ft) | 20–50 m (100–200 ft) |
Distribution |
AL; AR; GA; IA; IL; IN; KS; KY; LA; MI; MO; MS; OK; TN; TX
|
GA; SC |
Source | FNA vol. 19, p. 212. | FNA vol. 19, p. 209. |
Parent taxa | Asteraceae > tribe Vernonieae > Vernonia | Asteraceae > tribe Vernonieae > Vernonia |
Sibling taxa | ||
Name authority | Rafinesque: Herb. Raf., 28. (1833) | Small: Bull. Torrey Bot. Club 25: 145. (1898) |
Web links |