Sweet coneflower
Rudbeckia subtomentosa Pursh
Images
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Morphology
- Stem
- Erect, usually branched above, densely hirsute above, not glaucous.
- Leaves
- Basal and cauline, alternate; blade ovate to elliptic, 1.2 to 12 inches long, .4 to 6 inches wide, base truncate to cuneate, margins usually 3-5-lobed, ultimate margins coarsely toothed, tip obtuse to acute or acuminate, surfaces densely hirsute, not glaucous.
- Inflorescence
- Heads 8-25, radiate, solitary or in corymb-like or panicle-like arrays.
- Flower
- Phyllaries 15-23, lanceolate to linear, .2 to .6 inch. Receptacles hemispheric to broadly ovoid. Ray florets 12-21, neuter; corolla yellow, ligule spreading, .8 to 1.6 inch long, .2 to .3 inch wide. Disk florets 200-400, bisexual, fertile; corolla brownish purple, .12 to .16 inch, tubular, lobes 5.
- Fruit
- Achenes black, obpyramidal, 4-angled, glabrous, .1 to .14 inch; pappus of minute teeth.
Ecology
- Habitat
- Mesic tallgrass prairies and ravines, moist thickets and pastures, river and stream banks, ditches.
- Distribution
- East 1/5 of Kansas
Additional Notes
Comments
Rudbeckia, for Olaus Johannes Rudbeck and his son Olaus Olai Rudbeck, Swedish botanists, and subtomentosa, slightly woolly, alluding to the downy hairs on the stems and under surfaces of the leaves. Rudbeckia subtomentosa occurs in drainage areas where moisture is available near the surface.
Quick Facts
- Plant Type
- Wildflower
- Family
- Asteraceae - Sunflower Family
- Life Span
- Perennial
- Height
- 40-80 inches
- Origin
- Native
- Last Updated
- 2014-01-20
Color Groups
Yellow Wildflowers
Flowering Period
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Blooms: July, August, September