Helenium amarum var. badium

(A. Gray ex S. Watson) Waterfall

Rhodora 62: 321. 1960.

Common names: Basin sneezeweed
Basionym: Helenium tenuifolium var. badium A. Gray ex S. Watson Proc. Amer. Acad. Arts 18: 108. 1883
Synonyms: Helenium badium (A. Gray ex S. Watson) Greene
Treatment appears in FNA Volume 21. Treatment on page 428.

Plants 10–50 (–80) cm. Leaves: basal and proximal often present at, sometimes withered by, flowering; basal blades pinnatifid; proximal blades entire or pinnately toothed or lobed to pinnatifid. Ray corollas 4.5–14 × 2–9 mm. Disc-florets 100–250+; corollas purple distally, 1.6–2.5 mm. Cypselae 0.7–1 mm; pappi of usually 6 scales 1–1.5 mm. 2n = 30.


Phenology: Flowering (Mar–)Apr–Jul(–Nov).
Habitat: Roadsides and fields
Elevation: 200–1500 m

Distribution

V21-1069-distribution-map.gif

Okla., Tex., Mexico (Chihuahua), Mexico (Coahuila)

Discussion

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
Mark W. Bierner +
(A. Gray ex S. Watson) Waterfall +
decurrent +
Helenium tenuifolium var. badium +
compound +  and simple +
pinnatifid;lobed;spatulate;ovate;spatulate;ovate;oblong;oblanceolate;linear;lanceolate;elliptic +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Basin sneezeweed +
yellow +  and yellowbrown or purple +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
4-5-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Okla. +, Tex. +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
200–1500 m +
gland-dotted +
glabrous or +  and sparsely densely hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Roadsides and fields +
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 />) +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
globoid;hemispheric;globose +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sessile +  and petiolate +
flowering +  and withered +
proximal +  and basal +
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 +
3 cm30 mm <br />0.03 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Flowering (Mar–)Apr–Jul(–Nov). +
9 +  and 34 +
pinnately toothed or lobed +  and pinnatifid +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
bearing subulate enations +, hairy +  and bristly +
ovoid;hemispheric;ovoid;hemispheric;globose;conic +
6 +  and 8 +
aristate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
exalbuminous +
not winged +  and branched +
3 (?) +  and 15 (?) +
1 +  and 3 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Helenium badium +
Helenium amarum var. badium +
Helenium amarum +
variety +
urceolate +  and campanulate +
dilated +
toothed +  and entire +
10 cm100 mm <br />0.1 m <br /> (100 cm1,000 mm <br />1 m <br />) +