Contains 11 accepted taxa overall.
Characteristics
Classification
Citation
RUDBECKIA Linnaeus, Sp. Pl. 906. 1753.
-
TYPE: Rudbeckia hirta Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 3: 469. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Rudbeckia heliopsidis | Sunfacing Coneflower, Pineywoods Coneflower | |||
| Rudbeckia hirta var. angustifolia | Coastal Plain Black-eyed Susan | |||
| Rudbeckia hirta var. hirta | Woodland Black-eyed Susan | |||
| Rudbeckia hirta var. pulcherrima | Weedy Black-eyed Susan | |||
| Rudbeckia laciniata var. digitata | Coastal Plain Cutleaf Coneflower | |||
| Rudbeckia laciniata var. humilis | Blue Ridge Cutleaf Coneflower | |||
| Rudbeckia laciniata var. laciniata | Common Cutleaf Coneflower, Goldenglow | |||
| Rudbeckia maxima | Giant Coneflower | |||
| Rudbeckia mollis | Woolly Coneflower | |||
| Rudbeckia spathulata | ||||
| Rudbeckia triloba var. triloba | Common Three-lobed Coneflower |
Identification Key
1. Basal and proximal leaves 0.5-1 cm wide, linear to linear-lanceolate
2
1. Basal and proximal leaves 1.3-12 cm wide, not linear
3
2. Stems strigose; heads 1-3; ray corolla laminae orange-red to dark purplish red
2. Stems glabrate; heads 3-15; ray corolla laminae yellow
3. Basal and proximal leaves lobed
4
3. Basal and proximal leaves unlobed
5
4. Disc corollas yellow (drying brownish); pappi coroniform or of 4 scales to 1.5 mm long; cypselae 3-5 mm long
4. Disc corollas primarily brown-purple (drying blackish); pappi coroniform to 0.2 mm long; cypselae 2-3 mm long
5. Mid-cauline leaves petiolate or the blade base cuneate to attenuate
6
5. Mid-cauline leaves sessile, the blade base clasping to truncate
7
6. Mid-cauline leaves petiolate, the blade base cordate to abruptly short-cuneate
6. Mid-cauline leaves sessile to short-petiolate, the blade base cuneate to attenuate
7. Stem and leaves glabrate
8
7. Stem and leaves pubescent, strigose to hirsute
9
8. Annual; pappus absent; disc longer than to subequal to width; cypselae 1.8-2.5 mm long
8. Rhizomatous; disc wider than or subequal to length; pappus of 4-6 unequal scales; cypselae 3.5-5 mm long
9. Stem and leaves softly pilose to woolly
9. Stem and leaves glabrate, strigose to coarsely hispid or hirsute
10
10. Stem and leaves glabrate to strigose, occasionally partly hirsute near the base; pappus coroniform to 0.2 mm long; cypselae 2.2-4 mm long
10. Stem and leaves copiously hispid or hirsute; pappus absent; cypselae 1.5-2.7 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||