Contains 9 accepted taxa overall.
Characteristics
Classification
Citation
VERNONIA Schreber, Gen. Pl. 541. 1791, nom. cons. vs. Behen Hill 1762.
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TYPE: Vernonia noveboracensis (Linnaeus) Willdenow, typ. cons. (Serratula noveboracensis Linnaeus)
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Vernonia ×georgiana | Georgia Ironweed | |||
| Vernonia acaulis | Stemless Ironweed | |||
| Vernonia angustifolia var. angustifolia | Tall Ironweed | |||
| Vernonia angustifolia var. scaberrima | Tall Ironweed | |||
| Vernonia gigantea | Common Ironweed | |||
| Vernonia glauca | Appalachian Ironweed, Tawny Ironweed | |||
| Vernonia noveboracensis | New York Ironweed | |||
| Vernonia ovalifolia | ||||
| Vernonia pulchella | Georgia Ironweed |
Identification Key
1. Leaves entire or toothed, lateral veins obscure to evident, at mid-stem the leaves 2-15 mm wide
2
1. Leaves toothed, lateral veins distinct, at mid-stem the leaves 13-40 mm wide
4
2. Leaves toothed, lateral veins slightly distinct, at mid-stem the leaves 9-15 mm wide
2. Leaves entire or very faintly toothed, lateral veins obscure, at mid-stem the leaves 2-9 mm wide
3
3. Leaves narrowly lanceolate to linear, mostly 10-50 times longer than wide, upper surface typically scabrellous
3. Leaves narrowly elliptic to linear-elliptic, mostly 8-18 times longer than wide, the upper surface smooth or nearly so
4. Middle and inner phyllaries filiform to linear-lanceolate
4. Middle and inner phyllaries ovate to oblong-lanceolate
5
5. Leaf lower surface usually scabrellous (with appressed, awl-shaped hairs), sometimes glabrescent, not or sparsely resin-gland-dotted; heads with 9-25(30) flowers
5. Leaf lower surface usually puberulous to tomentose or pannose (with erect or curled hairs), seldom glabrescent, conspicuously resin-gland-dotted; heads with 30-60 flowers
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||