Vernonia texana

(A. Gray) Small

Fl. S.E. U.S., 1338. 1903.

Endemic
Basionym: Vernonia angustifolia var. texana A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 91. 1884
Treatment appears in FNA Volume 19. Treatment on page 211. Mentioned on page 208.

Plants 4–8 (–10+) dm. Stems puberulent, glabrescent. Leaves basal and cauline; blades ovatelanceolate (basal) to narrowly lanceolate (distal), 5–12+ cm × (5–) 12–25+ mm, l/w = 3–5 (basal) or 8–17 (distal), abaxially glabrate (pitted, awl-shaped hairs in pits), adaxially puberulent and/or scabrellous. Heads in open, paniculiform-scorpioid arrays. Peduncles 1–35 mm. Involucres ± obconic to hemispheric, 4.5–6 × 5–7 mm. Phyllaries 35–45+ in 5–6+ series, glabrescent, margins arachno-ciliolate, the outer lance-deltate, 1–32 mm, inner oblong to linear, 4–5 (–6) mm, tips acute or rounded-apiculate. Florets 12–24+. Cypselae 2–3 mm; pappi usually whitish to stramineous (rarely purplish), outer scales or bristles 20+, 0.3–1+ mm, contrasting or intergrading with 20+, 6–7+ mm inner subulate scales or bristles. 2n = 34.


Phenology: Flowering Jun–Aug.
Habitat: Pinelands, scrub oak woodlands, sandy or sandy-clay soils
Elevation: 60–200 m

Distribution

V19-259-distribution-map.gif

Ark., La., Miss., Okla., Tex.

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

... more about "Vernonia texana"
resin-gland-dotted +, glabrous +, glabrate +, tomentose +  and pannose +
resin-gland-dotted +  and glabrate +
acute;attenuate +
scarious +
ovate +  and lanceolate +
indeterminate +  and determinate +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
paniculiform-scorpioid +
John L. Strother +
(A. Gray) Small +
cuneate +
Vernonia angustifolia var. texana +
compound +  and simple +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
puberulent +  and glabrate +
scabrellous +
ovatelanceolate;narrowly lanceolate +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 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 +
Ark. +, La. +, Miss. +, Okla. +  and Tex. +
60–200 m +
gland-dotted +
sparsely strigillose +  and tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Pinelands, scrub oak woodlands, sandy or sandy-clay soils +
pedunculate +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
less obconic;hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
arachno-ciliolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
lance-deltate +
0.1 cm1 mm <br />0.001 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
2-carpellate +
usually whitish +  and stramineous +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Jun–Aug. +
35 +  and 45 +
Fl. S.E. U.S., +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
subulate +  and setiform +
exalbuminous +
prostrate +  and ascending +
glabrescent +  and puberulent +
appendaged +  and truncate +
hirsutulous +
Compositae +
Vernonia texana +
Vernonia +
species +
rounded-apiculate +  and acute +