Tanacetum balsamita

Linnaeus
Sp. Pl. 2: 845. 1753.
Common names: Costmary chrysanthème balsamique
Introduced
Synonyms: Balsamita major Desfontaines Chrysanthemum balsamita (Linnaeus) Baillon Chrysanthemum balsamita var. tanacetoides Boissier Pyrethrum majus
Treatment appears in FNA Volume 19. Treatment on page 490. Mentioned on page 489.

Perennials, 30–80(–120) cm. Stems 1, erect, simple or branched (strigose, glabrate). Leaves basal and cauline; petiolate (proximal) or sessile (distal); blades (basal and proximal cauline) mostly elliptic to oblong, 10–20 × 2–8 cm, usually not pinnately lobed (sometimes with 1–4+ lateral lobes near bases), margins ± crenate, faces usually silvery strigose or sericeous (at least when young), glabrescent, ± gland-dotted. Heads (3–)10–60+ in corymbiform arrays. Involucres (3–)5–8(–10) mm diam. (phyllaries 40–60+ in 3–4+ series, tips usually ± dilated). Receptacles flat to convex. Ray florets usually 0 [sometimes 12–15, pistillate, fertile; corollas white, laminae 4–6+ mm]. Disc corollas ca. 2 mm. Cypselae ± columnar, 1.5–2 mm, 5–8-ribbed (with non-mucilaginous glands); pappi coroniform, 0.1–0.4 mm (entire or ± toothed). 2n = 18, 54.


Phenology: Flowering Aug–Sep.
Habitat: Disturbed sites, abandoned plantings
Elevation: 0–1800 m

Distribution

V19-817-distribution-map.gif

Introduced; N.S., Ont., Que., Sask., Calif., Colo., Conn., Del., Idaho, Ill., Ind., Kans., Maine, Md., Mass., Mich., Mo., Mont., Nev., N.H., N.Y., Ohio, Oreg., Pa., R.I., S.Dak., Utah, Vt., Wash., Wis., Wyo., Asia.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Tanacetum balsamita"
Linda E. Watson +
Linnaeus +
Costmary +  and chrysanthème balsamique +
N.S. +, Ont. +, Que. +, Sask. +, Calif. +, Colo. +, Conn. +, Del. +, Idaho +, Ill. +, Ind. +, Kans. +, Maine +, Md. +, Mass. +, Mich. +, Mo. +, Mont. +, Nev. +, N.H. +, N.Y. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +  and Asia. +
0–1800 m +
Disturbed sites, abandoned plantings +
Flowering Aug–Sep. +
Introduced +
Balsamita major +, Chrysanthemum balsamita +, Chrysanthemum balsamita var. tanacetoides +  and Pyrethrum majus +
Tanacetum balsamita +
Tanacetum +
species +