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Euthamia caroliniana

Euthamia caroliniana (L.) Greene ex Porter & Britton

Euthamia microcephala Greene

Euthamia microphylla Greene

Euthamia minor (Michx.) Greene

Euthamia tenuifolia (Pursh) Nutt.

Euthamia tenuifolia (Pursh) Nutt. var. tenuifolia

Solidago caroliniana (L.) Britton Sterns & Poggenb.

Solidago microcephala (Greene) Bush

Solidago microphylla (Greene) Bush

Solidago minor (Michx.) Fernald

Solidago tenuifolia Pursh

Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderAsteralesFlowering plants with a central disk flower and surrounding petals, like daisies
FamilyAsteraceaeThe aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
GenusEuthamiaGreek for “well-crowded,” from the dense flowerheads
Speciescaroliniana“From the Carolinas”

About plant names...

Slender goldentop, also known as coastal plain flat-topped goldenrod, is a North American native. It is not, however, a true goldenrod, though it is often classified as such. For a comparison table of goldenrods and similar species, see Solidago.

Identification: Plants are 10-39" (25-100 cm) in height. Stems are branched partway up, smooth, without a waxy bluish coating (technically, glabrous or glabrate, not glaucous). Leaves are linear, like grass blades, abundant, and typically bent downward or backward (deflexed). They are ⅞-2½" (2.4-7 cm) long and ¹/₃₂-⅛" (1-3 mm) wide, rarely up to ⅛" (6 mm) wide and smooth, especially at maturity. Leaves have resinous dots. The flowerheads are flat-topped or rounded, often multiply layered, with tiny yellow flowers, blooming from Aug-Dec.

Some Euthamias are listed below. This genus is in taxonomic flux, so the names are likely to change:

 

Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, NH
≈ 8 × 5" (19 × 13 cm) ID is uncertain

Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, NH
≈ 8 × 5" (20 × 13 cm) ID is uncertain

Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, NH
≈ 8 × 5" (19 × 13 cm) ID is uncertain

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Euthamia caroliniana

Euthamia graminifolia
Common Name

Slender Goldentop

Flat-top Goldentop
Plant 10-39" (25-100 cm) in height. 12-48" (30-121 cm) tall, often branched only slightly, sometimes heavily-branched and bushy.
Flowers Flowerheads are flat-topped or rounded, often multiply layered, with tiny yellow flowers, blooming from Aug-Dec. Large, flat-topped or umbrella-shaped yellow flower clusters. Each flower in the flowerhead is ⅛" (3.2 mm) across. Flowerheads tend to bloom gradually, not all at once, emitting a modest, sweet scent.
Leaves

 

Linear, like grass blades, abundant, typically bent downward or backward (deflexed). ⅞-2½" (2.4-7 cm) long and ¹/₃₂-⅛" (1-3 mm) wide, (up to ⅛" (6 mm)) and smooth. Leaves have resinous dots.
Lance-shaped leaves contain 3 veins running along the length of the vein. Sometimes there is 1 or 5 veins, depending on leaf size. Leaves are 3-6" (7.6-15 cm) × ⅛-⅝" (3.2-15 mm), resembling grass blades, and attached directly to the stem (“sessile”). Leaves have resinous dots.
Stem Stems are branched partway up, smooth, without a waxy bluish coating (technically, glabrous or glabrate, not glaucous). Stems typically have rows of fine white hairs.
Range/ Zones

Type Wild Wild

 

Online References:

Euthamia remota/E. caroliniana on michiganflora.net

Euthamia caroliniana at the Lady Bird Johnson Wildflower Center

Euthamia caroliniana on eFloras

References:

Clemants, Steven; Gracie, Carol, Wildflowers in the Field and Forest, Oxford University Press, 2006, p, 158

Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, MA
≈ 14 × 9" (35 × 23 cm) ID is uncertain

Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, MA
≈ 20 × 13" (50 × 33 cm) ID is uncertain

Euthamia caroliniana description by Thomas H. Kent, last updated 6 Sep 2013.

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Euthamia caroliniana (Slender Goldentop, Slender Fragrant Goldenrod, Coastal Plain Flat-topped Goldenrod)

8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, MA
≈ 16 × 11" (40 × 26 cm) ID is uncertain

Range:

About this map...