Amphiachyris dracunculoides

(de Candolle) Nuttall

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

Common names: Prairie broomweed
Synonyms: Gutierrezia dracunculoides (de Candolle) S. F. BlakeXanthocephalum amoenum var. intermedium Shinners
Basionyms: Brachyris dracunculoides de Candolle
Treatment appears in FNA Volume 20. Treatment on page 88.
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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

Distribution

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

Discussion

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

References

None.

Lower Taxa

No lower taxa listed.