Contains 10 accepted taxa overall.
Characteristics
Classification
Citation
RUDBECKIA Linnaeus, Sp. Pl. 906. 1753.
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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 amplexicaulis | CLASPING CONEFLOWER | Native FAC (NWPL) | ||
| Rudbeckia auriculata | EARED CONEFLOWER | Native Rare-State FACW (NWPL) | ||
| Rudbeckia fulgida | ORANGE CONEFLOWER | Native FAC (NWPL) FACW (DEP) | ||
| Rudbeckia graminifolia | GRASSLEAF CONEFLOWER | Native FACW (NWPL) FACW (DEP) | ||
| Rudbeckia hirta | BLACKEYED SUSAN | Native FACU (NWPL) | ||
| Rudbeckia laciniata | CUTLEAF CONEFLOWER | Native FACW (NWPL) FACW (DEP) | ||
| Rudbeckia mohrii | MOHR'S CONEFLOWER | Native OBL (NWPL) OBL (DEP) | ||
| Rudbeckia mollis | SOFTHAIR CONEFLOWER | Native | ||
| Rudbeckia nitida | SHINY CONEFLOWER; ST. JOHN'S SUSAN | Native Rare-State FACW (NWPL) FACW (DEP) | ||
| Rudbeckia triloba | BROWNEYED SUSAN | Native Rare-State FACU (NWPL) |
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 |
|---|---|---|---|
| Centrocarpha | Centrocarpha D. Don, in Sweet, Brit. Fl. Gard., ser. 2. 4: 87. 1831. | TYPE: = Rudbeckia Linnaeus 1753. | |
| Dracopis | Dracopis (Cassini) Cassini, in Cuvier, Dict. Sci. Nat. 38: 17. 1825. | BASIONYM: Rudbeckia Linnaeus, subg. Dracopis Cassini, in Cuvier, Dict. Sci. Nat. 35: 273. 1825. | TYPE: Dracopis amplexicaulis (Vahl) Cassini ex Lessing 1832. (Rudbeckia amplexicaulis Vahl 1793.) |
| Obeliscotheca | Obeliscotheca Adanson, Fam. Pl. 2: 128, 583. 1763. | TYPE: = Rudbeckia Linnaeus 1753. | |
| Peramibus | Peramibus Rafinesque, Ann. Nat. 1: 14. 1820. | TYPE: Peramibus hirtus Rafinesque 1820. |