Vernonia larseniae

B. L. King & S. B. Jones

Brittonia 27: 84. 1975.

Basionym: Vernonia lindheimeri var. leucophylla Larsen Ann. Missouri Bot. Gard. 15: 333, plate 45. 1928
Treatment appears in FNA Volume 19. Treatment on page 210.

Plants 7–10+ dm. Stems tomentose to pannose. Leaves mostly cauline; blades linear, 5–9 (–12+) cm × 3–5 (–8+) mm, l/w = 16–32, abaxially tomentose, adaxially densely sericeo-tomentose. Heads in corymbiform arrays. Peduncles 10–60 mm. Involucres ± hemispheric, 8–12 × 7–12 mm. Phyllaries 50–60+ in 5–6+ series, sericeo-tomentose to pannose, including margins, the outer lance-deltate, 1–3 mm, the inner lanceolate, 7–11+ mm, tips acute. Florets 40–50+. Cypselae 3.5–4+ mm; pappi stramineous, outer subulate scales or bristles 20+, 0.6–1.5+ mm, intergrading with 30+, 6–7+ mm inner subulate scales or bristles. 2n = 34.


Phenology: Flowering Jun.
Habitat: Arroyos, on limestone
Elevation: 800–900 m

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 larseniae"
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 />) +
John L. Strother +
B. L. King & S. B. Jones +
cuneate +
Vernonia lindheimeri var. leucophylla +
compound +  and simple +
9 cm90 mm <br />0.09 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
sericeo-tomentose +  and tomentose +
filiform;linear;filiform;linear;spatulate;oblanceolate;lanceolate;elliptic;ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 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 +
Tex. +  and Mexico (Coahuila) +
800–900 m +
gland-dotted +
sparsely strigillose +  and tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Arroyos, on limestone +
pedunculate +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
petiolate +  and sessile +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
lance-deltate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
2-carpellate +
persistent +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Jun. +
sericeo-tomentose +  and pannose +
50 +  and 60 +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
subulate +  and setiform +
exalbuminous +
prostrate +  and ascending +
tomentose +  and pannose +
appendaged +  and truncate +
hirsutulous +
Compositae +
Vernonia larseniae +
Vernonia +
species +