Compilation
Euthamia graminifolia

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Name

Identification
Euthamia graminifolia Nutt. [family ASTERACEAE ] Solidago graminifolia (L.) Salisb. [family ASTERACEAE ] (stored under name);
Related name
  • Euthamia fastigiata
  • Euthamia glutinosa
  • Euthamia graminifolia
  • Solidago lanceolata
  • Solidago graminifolia
Common name
  • Common goldentop, Flora of North America Vol. 20
  • verge d’or à feuilles de graminées, Flora of North America Vol. 20

Flora

Entry for Euthamia graminifolia (Linnaeus) Nuttall [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Euthamia graminifolia (Linnaeus) Nuttall [family COMPOSITAE], Trans. Amer. Philos. Soc., n. s., 7: 325. 1840
Chrysocoma graminifolia Linnaeus [family COMPOSITAE], Sp. Pl., 2: 841. 1753
Euthamia fastigiata Bush [family COMPOSITAE]
Euthamia floribunda Greene [family COMPOSITAE]
Euthamia graminifolia var. major (Michaux) Moldenke [family COMPOSITAE]
Euthamia graminifolia var. nuttallii (Greene) Sieren [family COMPOSITAE]
Euthamia hirtipes (Fernald) Sieren [family COMPOSITAE]
Solidago camporum Greene var. tricostata Lunell [family COMPOSITAE]
Solidago graminifolia (Linnaeus) Salisbury var. major (Michaux) Fernald [family COMPOSITAE]
Solidago graminifolia var. septentrionalis Fernald [family COMPOSITAE]
Solidago hirtipes Fernald [family COMPOSITAE]
Solidago lanceolata Linnaeus [family COMPOSITAE]
Treatment Author(s)
Arthur Haines
Information
Perennials, 30–150 cm. Stems (commonly branched in distal 1/4) glabrous or densely spreading-hirtellous, not glaucous. Leaves spreading to ascending; blades 3- or 5-nerved, linear to lanceolate, 37–130 × (2.1–)3–12 mm, lengths 7–20 times widths, abruptly to gradually reduced distally, herbaceous to firm-herbaceous, margins scabro-ciliate, apices obtuse to acuminate, faces usually little and obscurely gland-dotted (26–47 dots per mm²), barely viscid (more so on exposed shores), glabrous or densely spreading-hirtellous. Heads glomerulate, usually in flat-topped arrays (1.5–28 cm diam.), 10–28% of plant heights (branches unequal, giving irregular, broken appearance). Involucres broadly campanulate to campanulate, 3–5.3 mm. Phyllaries often ± yellow basally, outer (at least) usually green-tipped, outer ovate, inner oblong, apices obtuse or broadly acute. Ray florets (7–)17–22(–35). Disc florets (3–)5–7(–13); corollas 2.6–3.4 mm. 2n = 18.
Phenology
jul-aug (summer), sep-oct (fall)
Altitude range
0–900 m;
Distribution
St. Pierre and Miquelonintroduced in EuropeAsia.USA Ala.USA Colo.USA Conn.USA Del.USA Ill.USA Ind.USA IowaUSA Ky.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Miss.USA Mo.USA Mont.USA N.H.USA N.J.USA N.Y.USA N.C.USA OhioUSA Okla.USA Oreg.USA Pa.USA R.I.USA S.C.USA S.Dak.USA Tenn.USA Vt.USA Va.USA Wash.USA Wis.USA W.Va.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada Nfld. and Labr. (Nfld.)Canada N.W.T.Canada N.S.Canada Ont.Canada P.E.ICanada Que.Canada Sask.
Discussion
Plants with densely hairy leaves and stems have been called var. nuttallii. Though extremes are distinct, the plants cannot be reliably separated rangewide from typical Euthamia graminifolia. Plants called var. major have been distinguished primarily on the basis of leaf dimensions (lengths 8–11 times widths in var. major versus 11–20 in typical E. graminifolia). Overlap is extensive; no discrete boundaries can be drawn.
Euthamia hirtipes was described as a putative hybrid involving a hairy E. graminifolia and a small-headed E. caroliniana (M. L. Fernald 1946d). It combines broad, hairy leaf blades with few-flowered heads, a condition that is not intermediate between the putative parents. D. J. Sieren and J. F. Merrit (1980) and C. E. Taylor (1975) reviewed the plants. Until evidence can be supplied to the contrary, E. hirtipes should be considered a synonym of E. graminifolia.

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