- Prairies, glades, dry open woods, thickets, open ground.
- Native to U.S.
- This species can be found in the southern half of Missouri. The plant is easy to ID in the field because of its habitat, finely divided leaves, and big, all-yellow flowers.
There are two varieties of the plant in Missouri. Variety
can be found in the southeastern portion of the state. This variety has very finely divided leaves with filiform segments no more than 1.5mm broad. Variety
has leaf segments which range from 1-5mm broad. This variety is found in the southwestern portion of Missouri and also in a few scattered locations along the Missouri river.
is a showy species which does well in cultivation.
Photographs taken at Dave Rock Conservation Area, St. Claire County, MO., 6-7-03 and 6-16-05, and at the Lonesome Prairie Conservation Area, Benton County, MO., 5-15-04.
Following modified from Plants Database, United States Department of Agriculture
(A. Gray) Sherff;
(Hooker) Torrey & A. Gray;
(Alexander) E. B. Smith;
proximal to first peduncle usually 6—10+, distalmost 1—3 internodes 4—7+ cm.
mostly cauline on proximal
/8 of plant heights; petioles 0 or 10—35+ mm; blades usually 1(—2)-irregularly pinnately or ± pedately lobed with (3—)5—9+ lobes, rarely simple, simple blades or terminal lobes narrowly lanceolate to linear or filiform, 15—45(—90+) × (0.5—)2—8(—12+) mm.
of lanceolate to linear bractlets 3.5—9+ mm.
lance-ovate, 7—9(—12) mm.
yellow, 12—25+ mm.
3.3—4.8 mm, apices yellow.
2—3+ mm, wings spreading, ± chartaceous, entire or irregularly toothed to pectinate.
= 26 (+ 0—2B).
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