Euthamia caroliniana (L.) Greene ex Porter & Britton
Slender goldentop, slender fragrant goldenrod, coastal plain flat-topped goldenrod
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.
Plants: 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: Linear, like grass blades, abundant, and typically bent downward or backward (deflexed). They are ⅞–2½″ long ⨉ 1/32–⅛″ wide (2.4–7 cm ⨉ 1–3 mm), rarely up to ⅛″ (6 mm) wide, and smooth, especially at maturity. Leaves have black resinous dots on leaf undersides.
Flowers: The flowerheads are flat-topped or rounded, often multiply layered, with tiny yellow flowers. Each flower has 7-17 ray florets, and 3-22 disc florets. They bloom from August to December.
Fruits: Seeds are 1/32″ (0.5 mm) long, hard, pubescent, one-seeded, indehiscent white nutlets, with attached to hair-like bristles (pappus) for wind distribution.
Habitats: Open sandy areas, such as powerline cuts in pine barrens, river or lakeshores, wetland margins.
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Some Euthamias. |
Online References:
References:
Clemants, Steven; Gracie, Carol, Wildflowers in the Field and Forest, Oxford University Press, 2006, p, 158
The beetle is Typocerus velutinus, the banded longhorn or cerambycid beetle · 8/4/2025 · Tarbox Preserve, Topsham, Maine · ≈ 3 × 2½″ (7.9 × 6.4 cm) 
8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, New Hampshire · ≈ 5 × 5″ (13 × 13 cm) 
ID is uncertain 
7/31/2021 · Otter Brrok Preserve, Harpswell Heritage Land Trust, Harpswell, Maine · ≈ 7 × 6″ (17 × 14 cm) 
8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, New Hampshire · ≈ 8 × 6″ (20 × 14 cm) ID is uncertain 
8/25/2013 · Casalis State Forest, Elm Hill Rd, Peterborough, New Hampshire · ≈ 8 × 5″ (19 × 13 cm) ID is uncertain 
8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts · ≈ 8 × 9″ (21 × 23 cm) ID is uncertain 
8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts ID is uncertain 
8/7/2010 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts · ≈ 12 × 11″ (30 × 26 cm) ID is uncertain 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Magnoliopsida | Dicotyledons—plants with two initial seed leaves |
| Subclass | Asteridae | A large class that encompasses asters |
| Order | Asterales | Flowering plants with a central disk flower and surrounding petals, like daisies |
| Family | Asteraceae | The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers |
| Genus | Euthamia | Greek for “well-crowded,” from the dense flowerheads |
| Species | caroliniana | “From the Carolinas” |
Euthamia caroliniana description by Thomas H. Kent, not updated.
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