Coreopsis pubescens Ell.

Family - Asteraceae

Stems - To 1m tall, erect, with fibrous roots, multiple from base, branching in apical 1/2, hirsute, slightly scabrous, herbaceous. Hairs of the stem multicellular.

Leaves - Opposite, petiolate. Petioles to +/-1.5cm long, hirsute, minutely winged with decurrent leaf tissue. Blades ovate-lanceolate, entire, acuminate, to +/-8cm long, +/-3.5cm broad, pubescent abaxially (slightly scabrous), mostly glabrous adaxially, lighter green abaxially, often with two small lateral lobes at base.

Inflorescence - Single flower heads terminating long peduncles. Peduncles to +15cm long, pubescent near base, glabrous near apex.

Involucre - Phyllaries in two series. Outer phyllaries 8, green, subulate to lanceolate, to 7mm long, 1.7mm broad, spreading, glabrous, with scarious margins, with some short cilia at apex. Inner phyllaries yellow-green, erect and spreading in apical 1/2, lanceolate, 9mm long, +/-3mm broad, glabrous.

Involucre.

Ray flowers - Typically 8 per flower head, sterile. Ligules to 1.5cm long, 8-9mm broad, glabrous, distinctly notched or lobed at apex. Achenes (in flower) 1.3mm long, .9mm broad, compressed, white. Pappus absent.

Disk flowers - Disk 6-8mm broad. Flowers yellow, 5-lobed. Corolla tube 4mm long, glabrous. Achenes with two small scales as pappus, compressed, glabrous, winged, tuberculate, 2.5-3mm long in fruit, black when mature, greenish-white in flower. Receptacle convex. Chaff 6mm long, compressed, whitish at base, becoming thin and yellow at apex.

Flowering - May - October.

Habitat - Rocky open woods, base of wooded bluffs, low ground, gravel stream beds, alluvial thickets, railroads.

Origin - Native to U.S.

Other info. - This species can be found mainly in the lower 1/2 of Missouri. A small population also occurs in the northeast corner of the state. This plant can be easy to ID because of its pubescent stems and leaves, distinctive leaf shape, and deeply notched ray ligules. The plant does well in cultivation and grows well from seed.

Photographs taken at Alley Spring, Shannon County, MO., 6-16-03 and 6-12-04.


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