Vernonia angustifolia

Michaux

Fl. Bor.-Amer. 2: 94. 1803.

Endemic
Synonyms: Vernonia angustifolia subsp. mohrii (S. B. Jones) S. B. Jones & W. Z. Faust Vernonia angustifolia subsp. scaberrima (Nuttall) S. B. Jones & W. Z. Faust Vernonia angustifolia var. scaberrima (Nuttall) A. Gray Vernonia scaberrima
Treatment appears in FNA Volume 19. Treatment on page 209. Mentioned on page 207.

Plants 5–10+ dm. Stems sparsely appressed-puberulent, glabrescent. Leaves mostly cauline; blades (mid-stem) lance-linear to filiform, 5–12 cm × 2–4 (–8+) mm, l/w = (8–) 12–30 (–60+), abaxially glabrous but for scattered hairs on midribs or scabrellous (hairs awl-shaped), resin-gland-dotted or not, adaxially scabrellous. Heads in ± corymbiform to paniculiform arrays. Peduncles 8–25 mm. Involucres ± campanulate to obconic, 5–7 (–10) × 4–6 (–9) mm. Phyllaries 22–45+ in 5–6 series, sparsely scabrellous, glabrescent, margins ciliolate, the outer lanceolate to subulate, 1.5–3 mm, inner lanceovate to lanceolate, 5–9+ mm, tips acuminate to subulate. Florets 12–20 (–30). Cypselae 2.5–3 mm; pappi stramineous to purplish, outer scales 25–30, 0.5–1.2+ mm, contrasting with 35–40+, 5.5–6+ mm inner bristles. 2n = 34.


Phenology: Flowering Jun–Aug.
Habitat: Pine barrens, oak woodlands
Elevation: 10–50 m

Distribution

V19-253-distribution-map.gif

Ala., Fla., Ga., La., Miss., N.C., S.C.

Discussion

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Vernonia angustifolia"
resin-gland-dotted +, glabrous +, glabrate +, tomentose +  and pannose +
resin-gland-dotted +  and glabrate +
acute;attenuate +
scarious +
ovate +  and lanceolate +
less corymbiform +  and paniculiform +
indeterminate +  and determinate +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
John L. Strother +
Michaux +
cuneate +
compound +  and simple +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
not +, resin-gland-dotted +  and glabrous +
scabrellous +
lance-linear;filiform +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
ribbed;nerved;ribbed;nerved;smooth +
lance-linear;more or less lanceolate +
zygomorphic +, actinomorphic +  and (3-)5-merous +
pink +  and purplish +
resin-gland-dotted +, more or less strigillose +  and hirtellous +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +  and S.C. +
10–50 m +
gland-dotted +
sparsely strigillose +  and tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Pine barrens, oak woodlands +
pedunculate +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
less campanulate;obconic +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
petiolate +  and sessile +
lanceolate +  and subulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
2-carpellate +
stramineous +  and purplish +
persistent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering Jun–Aug. +
22 +  and 45 +
scabrellous +
Fl. Bor.-Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
subulate +  and setiform +
exalbuminous +
prostrate +  and ascending +
glabrescent +  and appressed-puberulent +
appendaged +  and truncate +
hirsutulous +
Vernonia angustifolia subsp. mohrii +, Vernonia angustifolia subsp. scaberrima +, Vernonia angustifolia var. scaberrima +  and Vernonia scaberrima +
Vernonia angustifolia +
Vernonia +
species +
acuminate +  and subulate +