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Compilation
Galinsoga bicolorata

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Holotype of Galinsoga bicolorata H. St. John & D. White [family ASTERACEAE]

Isotype of Galinsoga bicolorata St. John, H. & White, D. 1920 [family ASTERACEAE]

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Name

Identification

Galinsoga bicolorata H. St. John & D. White [family ASTERACEAE ] (stored under name); Verified by 185076, 1920 Galinsoga quadriradiata Ruiz & Pav. [family ASTERACEAE ] Verified by J. M. Canne (OS), Galinsoga hispida Benth. [family ASTERACEAE ] Verified by Not on Sheet, Galinsoga bicolorata H. St. John & D. White [family ASTERACEAE ] Verified by H. St. John & D. White, 1919

Flora

Entry for Galinsoga quadriradiata Ruiz & Pavón [family COMPOSITAE]

Flora of North America (FNA)

Flora of North America

Reference Sources

Flora of North America, Vol 21,

Galinsoga quadriradiata Ruiz & Pavón [family COMPOSITAE], Syst. Veg. Fl. Peruv. Chil., 1: 198. 1798

Galinsoga bicolorata H. St. John & D. White [family COMPOSITAE]

Galinsoga caracasana (de Candolle) Schultz-Bipontinus [family COMPOSITAE]

Galinsoga ciliata (Rafinesque) S. F. Blake [family COMPOSITAE]

Treatment Author(s)

Judith M. Canne-Hilliker

Plants 8–62 cm. Leaf blades 20–60 × 15–45 mm. Peduncles 5–20 mm. Involucres hemispheric to campanulate, 3–6 mm diam. Phyllaries falling. Paleae: outer falling, broadly elliptic to obovate, 2–3 mm; inner falling, linear to lanceolate, 2–3 mm, entire or 2- or 3-lobed, lobes to 1/3 total lengths, blunt. Ray florets (4–)5(–8); corollas usually white, sometimes pink, laminae 0.9–2.5 × 0.9–2 mm. Disc florets 15–35. Cypselae: rays 1.5–2 mm; discs 1.3–1.8 mm; pappi: rays of 6–15 fimbriate scales 0.5–1 mm; discs 0, or of usually 14–20, rarely 1–5, white, lanceolate to oblanceolate, fimbriate, sometimes aristate, scales 0.2–1.7 mm. 2n = 32 [48, 64].

jun-aug (summer), sep-nov (fall)

MexicoWest IndiesCentral AmericaSouth Americaintroduced in EuropeAsiaAfricaPacific Islands.USA Ala.USA Ark.USA Colo.USA Conn.USA Del.USA D.C.USA Fla.USA Ga.USA Ill.USA Ind.USA IowaUSA Kans.USA Ky.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Mo.USA Nebr.USA N.H.USA N.J.USA N.Y.USA N.C.USA N.Dak.USA OhioUSA Pa.USA R.I.USA S.C.USA Tenn.USA Vt.USA Va.USA Wash.USA W.Va.USA Wis.Canada Alta.Canada B.C.Canada Man.Canada N.B.Canada N.S.Canada Ont.Canada P.E.I.Canada Que.Canada Sask.

Tetraploids of Galinsoga quadriradiata are native to Mexico. Higher polyploids are found in South America and differ from the tetraploids by their coarsely crenate-serrate leaves, cylindro-campanulate involucres, and usually reddish purple limbs of ray corollas that extend at right angles to involucres.

Native/Introduced