Contains 9 accepted taxa overall.
Characteristics
Classification
Citation
HELENIUM Linnaeus, Sp. Pl. 886. 1753.
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TYPE: Helenium autumnale Linnaeus
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Helenium amarum | Bitterweed | |||
| Helenium autumnale | Common Sneezeweed | |||
| Helenium badium | ||||
| Helenium brevifolium | Shortleaf Sneezeweed | |||
| Helenium elegans | ||||
| Helenium flexuosum | Southern Sneezweed | |||
| Helenium pinnatifidum | Southeastern Sneezeweed | |||
| Helenium quadridentatum | ||||
| Helenium vernale | Savannah Sneezeweed |
Identification Key
1. Leaves filiform to linear, 1-4 mm wide, 15-150 times longer than wide, the bases not decurrent along the stem
1. Leaves lanceolate, (2)5-40 mm wide, 2-20 times longer than wide, the base decurrent along the stem
2
2. Heads 5-100 per stem, the arrays with numerous branches
3
2. Heads 1-5(10) per stem, branches none to few
4
3. Cauline leaves usually dentate, 0.8-3 cm wide; ray flower pistillate, fertile; disc corollas yellow to yellow-brown
3. Cauline leaves entire to subtly toothed, 0.2-1.4 cm wide; ray flower neuter; disc corollas reddish or purplish
4. Disc corolla lobes reddish, purplish, to yellow-brown
4. Disc corolla lobes mostly yellow
5
5. Pappus scales fimbriate-fringed or deeply lacerate 1/2 or more of their length; leaves of basal rosettes entire, undulate, to subtly toothed; peduncles glabrate to sparsely hairy; cypselae hairy
5. Pappus scales entire to slighly lacerate; leaves of basal rosettes entire, undulate, subtly to coarsely toothed, or pinnatifid; peduncles glabrate to densely hairy; cypselae glabrous or hairy
6
6. Leaves of basal rosettes undulate, subtly to coarsely toothed, or pinnatifid; peduncles moderately to densely hairy; cypselae hairy
6. Leaves of basal rosettes entire, undulate, to subtly toothed; peduncles glabrous to sparsely hairy; cypselae glabrous
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||