Helenium campestre

Small

Fl. S.E. U.S., 1291, 1341. 1903.

Common names: Oldfield sneezeweed
Endemic
Treatment appears in FNA Volume 21. Treatment on page 430. Mentioned on page 427.

Perennials, 40–100 cm. Stems usually 1, branched distally, moderately to strongly winged, densely (the proximal) to moderately hairy. Leaves moderately to densely hairy; basal blades oblanceolate to obovate to spatulate, entire or undulate-serrate; proximal and mid-blades oblanceolate to lanceolate, usually entire, sometimes undulate-serrate; distal blades lanceolate to lance-linear, entire. Heads 3–20 per plant, in paniculiform to corymbiform arrays. Peduncles 3–11 cm, moderately to densely hairy. Involucres globoid to ovoid, 9–17 × 10–20 mm. Phyllaries (barely connate proximally) moderately to densely hairy. Ray-florets 9–15, neuter; corollas yellow, 20–30 × 8–15 mm. Disc-florets 150–500 (–700+); corollas yellow proximally, reddish-brown to purple distally, 3–5 mm, lobes 5. Cypselae 1–1.4 mm, sparsely to moderately hairy; pappi of 6–7, entire, non-aristate scales 0.3–0.5 mm. 2n = 28.


Phenology: Flowering May–Jun(–Jul).
Habitat: Ditches, fields, in washes, along streams
Elevation: 100–200 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Helenium campestre"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Mark W. Bierner +
oblanceolate +  and obovate +
decurrent +
compound +  and simple +
pinnatifid;lobed;spatulate;ovate;spatulate;ovate;oblong;oblanceolate;linear;lanceolate;elliptic +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Oldfield sneezeweed +
reddish-brown +  and purple +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
4-5-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
lanceolate;lance-linear +
100–200 m +
gland-dotted +
glabrous or +  and sparsely densely hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ditches, fields, in washes, along streams +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
2-carpellate +
persistent +
3 cm30 mm <br />0.03 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Flowering May–Jun(–Jul). +
9 +  and 34 +
Fl. S.E. U.S., +
bearing subulate enations +, hairy +  and bristly +
ovoid;hemispheric;ovoid;hemispheric;globose;conic +
6 +  and 7 +
non-aristate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
exalbuminous +
winged +  and branched +
1 (?) +  and 10 (?) +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Helenium campestre +
Helenium +
species +
urceolate +  and campanulate +
dilated +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
shrub +  and subshrub +