Euthamia graminifolia (L.) Nutt.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - Glabrous to densely spreading-hirtellous, 3–15 dm; lvs 4–13 cm × 3–12 mm, evidently 3-nerved, the larger ones ordinarily with 1 or 2 additional pairs of fainter lateral nerves; heads mostly sessile or subsessile in small glomerules, mostly 20–35(–45)-fld, with 15–25(–35) rays and (4)5–10(–13) disk-fls; invol turbinate, 3–5 mm; rays minute and often scarcely spreading, ca 1 mm; 2n=18. Open, usually moist ground; Nf. and Que. to B.C., s. to N.C., Mo., and N.M. (Solidago g.) The common form in our range is var. graminifolia, with relatively narrow lvs, the middle cauline ones 11–20 times as long as wide, acuminate. Typical var. graminifolia is essentially glabrous. Similar plants with evidently spreading-hirtellous herbage have been called var. nuttallii (Greene) W. Stone, but do not form an ecogeographically distinctive population. The var. major (Michx.) Moldenke is northern, entering our range only in n. Minn.; it has broader lvs, the middle cauline ones mostly 7–11 times as long as wide, merely acute, and is often smaller, with less ample infl.
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Common Names
common flat-topped goldenrod