Hedosyne ambrosiifolia
Madroño 47: 204. 2001.
Basionym: Euphrosyne ambrosiifolia A. Gray Smithsonian Contr. Knowl. 3(5): 102. 1852 (as ambrosiaefolia)
Synonyms: Cyclachaena ambrosiifolia (A. Gray) Rydberg Iva ambrosiifolia (A. Gray) A. Gray
Treatment appears in FNA Volume 21. Treatment on page 31.
Leaves: petioles 5–12(–45) mm; blades 3–5(–9) × 4–5(–8) cm overall, lobes 1–3 mm wide. Peduncles 3–12+ mm. Involucres 2–3+ mm. Phyllaries: outer 5 sparsely strigose or glabrous. Paleae 1–1.5 mm. Functionally staminate florets: corollas 1.5–2 mm. Cypselae 1.4–1.7 mm. 2n = 36.
Phenology: Flowering Jul–Sep.
Habitat: Disturbed sites (roadsides, washes, etc.), in sandy, gypseous, or calcareous soils
Elevation: 1000–2000 m
Distribution
Ariz., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sonora, Zacatecas).
Discussion
Selected References
None.
Lower Taxa
None.