Helenium vernale

Walter

Fl. Carol., 210. 1788.

Common names: Savanna or spring sneezeweed
IllustratedEndemic
Treatment appears in FNA Volume 21. Treatment on page 429. Mentioned on page 427.

Perennials, 30–80 cm. Stems usually 1, usually unbranched distally, weakly winged, glabrous proximally, glabrous or sparsely hairy distally. Leaves usually glabrous, rarely sparsely hairy; basal blades obovate to narrowly oblanceolate, usually entire or undulate to undulate-serrate; proximal and mid-blades usually narrowly lanceolate to narrowly oblanceolate, usually entire, sometimes toothed; distal blades lance-linear, entire. Heads 1 (–3) per plant, usually borne singly. Peduncles 2–23 cm, usually glabrous, sometimes sparsely hairy. Involucres hemispheric, 10–17 × 15–27 mm. Phyllaries glabrous or sparsely hairy. Ray-florets 13–30, neuter; corollas yellow, 15–21 × 5–10 mm. Disc-florets 150–650 (–800+); corollas yellow proximally, yellow to yellowbrown distally, 4.6–6 mm, lobes 5. Cypselae 1–1.5 mm, glabrous; pappi of usually 8 entire or lacerate, non-aristate scales 1.5–2 mm. 2n = 34.


Phenology: Flowering Mar–May.
Habitat: Ditches, other moist areas such as wet woods, bogs, and swamp edges
Elevation: 10–50 m

Distribution

V21-1072-distribution-map.gif

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

Discussion

The name Helenium nuttallii A. Gray is illegitimate; it has been applied to plants treated here as H. vernale.

Selected References

None.

Lower Taxa

None.
... more about "Helenium vernale"
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 +
Walter +
obovate +  and narrowly oblanceolate usually entire or undulate +
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 +
Savanna or spring sneezeweed +
yellow +  and yellowbrown +
1.5 cm15 mm <br />0.015 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0.46 cm4.6 mm <br />0.0046 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
4-5-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +  and S.C. +
10–50 m +
gland-dotted +
glabrous or +  and sparsely densely hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ditches, other moist areas such as wet woods, bogs, and swamp edges +
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 />) +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
hemispheric +
1.5 cm15 mm <br />0.015 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
sessile +  and petiolate +
hairy +  and glabrous +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
2-carpellate +
persistent +
lacerate +  and entire +
hairy +  and glabrous +
2 cm20 mm <br />0.02 m <br /> (23 cm230 mm <br />0.23 m <br />) +
Flowering Mar–May. +
hairy +  and glabrous +
9 +  and 34 +
Fl. Carol., +
bearing subulate enations +, hairy +  and bristly +
ovoid;hemispheric;ovoid;hemispheric;globose;conic +
5 +  and 12 +
non-aristate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
exalbuminous +
Illustrated +  and Endemic +
winged +  and unbranched +
1 (?) +  and 10 (?) +
hairy +  and glabrous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Helenium vernale +
Helenium +
species +
urceolate +  and campanulate +
dilated +
toothed +  and entire +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +