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Mullein foxglove

Dasistoma macrophylla (Nutt.) Raf.

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Mullein foxglove
Mullein foxglove inflorescence
Mullein foxglove corolla and calyx
Mullein foxglove
Mullein foxglove
Mullein foxglove leaves
Mullein foxglove
Mullein foxglove calyx

Morphology

Stem
Erect, branched, finely-pubescent.
Leaves
Opposite, lower broadly ovate in outline, 6 to 14 inches long, 3.2 to 8.8 inches wide, deeply pinnately cleft or twice pinnately-compound; divisions broadly lanceolate, margins toothed; upper leaves reduced in size, becoming lanceolate, sometimes entire.
Inflorescence
Raceme, elongate, spike-like; flowers in leaf axils, stalks short, club-shaped; bracts leaf-like, opposite.
Flower
Calyx bell-shaped, 1/4 to 2/5 inch long, 5-lobed; lobes egg-shaped, to 1/5 inch long; corolla narrowly bell-shaped, 3/5 inch long, yellow, weakly 2-lipped, tube densely soft-hairy within; lobes 5, nearly equal, widely spreading, broadly rounded, 1/5 to 1/4 inch long; stamens 4, arranged in 2 sets; filaments bearded; stigma 2-lobed.
Fruit
Capsule, rounded, 1/4 to 1/2 inch long, veiny, dark brown; seeds numerous, angular, 1/10 inch long, dark brown.

Ecology

Habitat
Rich, moist woodlands, stream banks, thickets, and rocky slopes.
Distribution
East 1/3 of Kansas.

Additional Notes

Comments

The corolla usually lasts only about a day. Mullein foxglove is partially parasitic on the roots of elm, buckeye and other trees.

Quick Facts
Plant Type
Wildflower
Family
Orobanchaceae - Broomrape Family
Life Span
Perennial
Height
3-7 feet
Last Updated
2025-02-15
Color Groups
Yellow Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: July, August, September