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Brown-eyed susan

Rudbeckia triloba L. var. triloba

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Brown-eyed susan leaf
Brown-eyed susan inflorescence
Brown-eyed susan disk and ray florets
Brown-eyed susan
Brown-eyed susan stem
Brown-eyed susan leaf
Brown-eyed susan leaf

Morphology

Stem
Erect, branched, stiff-hairy to nearly glabrous.
Leaves
Alternate, simple when young, often becoming 3-lobed; margins toothed; tips pointed to tapering pointed; surfaces stiff-hairy; lower blades broadly ovate, seldom more than 2 inches long, some 3-lobed or 3-parted, long-stalked; middle and upper leaves smaller, narrowly ovate to elliptic, often undivided, short-stalked to nearly sessile.
Inflorescence
Solitary heads terminating branches, forming panicle-like inflorescence.
Flower
Bracts narrow, nearly equal, green, spreading or reflexed; ray florets 6-12, 1/3 to 1.2 inch long, yellow to yellow-orange, disk 2/5 to 3/5 inch across, hemispheric to egg-shaped; disk florets 150-300, dark purple.
Fruit
Achene, 4-angled, glabrous, tipped with minute crown, enclosing small seed.

Ecology

Habitat
Low wooded areas, roadsides, stream banks; moist, often shaded sites.
Distribution
East 1/4 of Kansas.
Quick Facts
Plant Type
Wildflower
Family
Asteraceae - Sunflower Family
Life Span
Perennial
Height
20-60 inches
Last Updated
2008-02-10
Color Groups
Yellow Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: July, August, September, October