Flora of North America species comparison

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Dyssodia papposa

dogweed, fetid-marigold, prairie dogweed
Leaves

15–50 × 10–40 mm overall, ultimate lobes (7–)11–15, 5–20 × 1–3 mm, glabrous or sparsely hairy, dotted with oil-glands.
Peduncles

1–5(–10) mm.
Involucres

6–10 mm.
Ray laminae

1.5–2.5 × 1–2 mm.
Disc corollas

ca. 3 mm.
Phyllaries

each bearing 1–7 oil-glands.
Cypselae3

–3.5 mm;

pappi 1–3 mm.
2n

= 26.

Dyssodia papposa
Phenology Flowering summer–fall.
Habitat Grasslands, open woodlands, often ruderal, fields, along roadways
Elevation 0–2000 m (0–6600 ft)
Distribution
from FNA
AR; AZ; CA; CO; IA; IL; IN; KS; KY; LA; MA; ME; MI; MN; MO; MT; ND; NE; NH; NM; NV; NY; OH; OK; PA; SD; TN; TX; UT; VT; WI; WV; WY; ON; Mexico; Central America [Introduced in South America]
[WildflowerSearch map]
[BONAP county map]
Discussion

Records of Dyssodia papposa from Ontario and from California, Maine, Massachusetts, New Hampshire, New York, and Vermont evidently document local, probably ephemeral, introductions. In 1837, C. W. Short noted of D. papposa on a specimen label, “This plant is so abundant, and exhales an odor so unpleasant as to sicken the traveler over the western prairies of Illinois, in autumn.”

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 231.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Pectidinae > Dyssodia
Synonyms Tagetes papposa
Name authority (Ventenant) A. Hitchcock: Trans. Acad. Sci. St. Louis 5: 503. (1891)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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