Galinsoga parviflora

Cavanilles

Icon. 3: 41, plate 281. 1795.

WeedyIllustrated
Treatment appears in FNA Volume 21. Treatment on page 181.

Plants 4–60 cm. Leaf blades 7–110 × 3–70(–80) mm. Peduncles 1–40 mm. Involucres campanulate, 2.5–5 mm diam. Phyllaries persistent. Paleae: outer persistent with distal phyllaries or falling, elliptic to obovate; inner usually persistent, lanceolate to ovate or obovate, 2–3.5 mm, 3-lobed, lobes to 1/3+ total lengths, acute. Ray florets (3–)5(–8); corollas usually dull white (pink), laminae 0.5–1.8 × 0.7–1.5 mm. Disc florets 15–50. Cypselae: rays 1.5–2.5 mm; discs 1.3–2.5 mm, glabrous or strigose; pappi: rays 0 or of 5–10, laciniate scales 0.5–1 mm; discs 0, or of 15–20 white or gray, linear, fimbriate, obtuse (acute) scales 0.5–2 mm.

Distribution

V21-443-distribution-map.gif

B.C., Man., N.B., Ont., Que., Ariz., Calif., Colo., Conn., D.C., Ill., Ind., Iowa, Kans., Ky., Mass., Md., Mich., Minn., Mo., N.Dak., N.J., N.Mex., N.Y., Nebr., Ohio, Oreg., Pa., R.I., Tex., Va., Vt., W.Va., Wis., West Indies, Central America, South America, introduced in Europe, Asia, Africa, Australia.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades lanceolate to broadly ovate, margins serrulate to serrate; arrays of heads loose; axillary peduncles longer than subtending bractlets Galinsoga parviflora var. parviflora
1 Leaf blades lanceolate, oblong, or ovate, margins usually entire or serrulate, sometimes serrate; arrays of heads congested; axillary peduncles shorter than subtending bractlets Galinsoga parviflora var. semicalva
... more about "Galinsoga parviflora"
Judith M. Canne-Hilliker +
Cavanilles +
B.C. +, Man. +, N.B. +, Ont. +, Que. +, Ariz. +, Calif. +, Colo. +, Conn. +, D.C. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Mass. +, Md. +, Mich. +, Minn. +, Mo. +, N.Dak. +, N.J. +, N.Mex. +, N.Y. +, Nebr. +, Ohio +, Oreg. +, Pa. +, R.I. +, Tex. +, Va. +, Vt. +, W.Va. +, Wis. +, West Indies +, Central America +, South America +, introduced in Europe +, Asia +, Africa +  and Australia. +
Weedy +  and Illustrated +
Compositae +
Galinsoga parviflora +
Galinsoga +
species +