The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

dune tansy

Habit Plants 1.5–5+ dm.
Leaves

oblanceolate or elliptic in outline, 3–35 × 2–10 cm;

margins often curled, 2–3-times pinnately lobed;

surfaces villous to woolly, sometimes glabrous;

primary lobes in 6–24 pairs; secondary lobes linear to ovate or obovate.

Involucres

4–5 × 8–22+ mm.

Ray florets

0–25;

rays 1–6 mm, yellow.

Disc florets

corollas 2–2.5 mm, yellow.

Phyllaries

with membranous margins; inner not membranetipped.

Fruits

2–3 mm, tan;

gland-dotted, 3–5-ribbed, pappi of low crowns or a ring of scales.

Heads

2–20+;

peduncles 0.3–12 cm, villous.

2n

=54.

Tanacetum bipinnatum

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Dunes, sandy flats, bluffs, grassy slopes. Flowering May–Aug. 0–100 m. Est. CA, WA; north to AK, northeast to New­foundland; Asia, Europe. Native.

Formerly treated as T. camphoratum, this taxon, as well as the related T. huronense, has been combined into T. bipinnatum.

Source Flora of Oregon, volume 2, page 360
Kenton Chambers
Sibling taxa
T. balsamita, T. parthenium, T. vulgare
Synonyms Tanacetum camphoratum, Tanacetum douglasii
Web links