Amphiachyris dracunculoides

(de Candolle) Nuttall

Trans. Amer. Philos. Soc., n. s.7: 313. 1840

Common names: Prairie broomweed
Synonyms: Gutierrezia dracunculoides Xanthocephalum amoenum intermedium
Basionyms: Brachyris dracunculoides
Found in FNA Volume 20. Treatment on page 88.
FNA20 P08 Neonesomia palmeri.jpeg
Plants 30–100(–200) cm. Primary stems 0.3–1(–2) mm diam. Leaf blades narrowly to broadly lanceolate, 5–60 × 0.5–6 mm. Heads in crowded corymbiform arrays. Phyllaries 2–3 × 1–2 mm. Receptacles deeply pitted, glabrous. Cypselae 1.2–2.2 mm, 7–9-ribbed, short-setulose. 2n = 10 (rarely 8).

Phenology: Flowering Jul–Nov.
Habitat: Calcareous, clay, or sandy soils, disturbed habitats
Elevation: 0–500 m


Ala., Ark., Ill., Ind., Iowa, Kans., Ky., La., Miss., Mo., Nebr., N.Mex., Okla., Ohio, Pa., S.C., Tenn., Va.


Amphiachyris dracunculoides is common in the south-central states, often in relatively large populations.



AuthorGuy L. Nesom +
BasionymBrachyris dracunculoides +
Common namePrairie broomweed +
Elevation0–500 m +
HabitatCalcareous, clay, or sandy soils, disturbed habitats +
IllustratorBarbara Alongi +
PhenologyFlowering Jul–Nov. +
ReferenceNone +
SynonymGutierrezia dracunculoides + and Xanthocephalum amoenum intermedium +
Taxon nameAmphiachyris dracunculoides +
Taxon parentAmphiachyris +
Taxon rankspecies +
VolumeVolume 20 +