Aphanostephus ramosissimus var. humilis
Phytologia 45: 501. 1980.
Basionym: Leucopsidium humile Bentham
Synonyms: Aphanostephus arizonicus A. GrayAphanostephus humilis (Bentham) A. Gray
Treatment appears in FNA Volume 20. Treatment on page 353.
Revision as of 00:45, 27 July 2019 by FNA>Volume Importer
Plants 6–15 cm. Involucres 4.7–7.5 mm. Ray florets 26-–35. Cypselae (1.1–)1.4–1.6 mm; pappi 0 or minutely ciliate rings 0.1–0.2 mm, sometimes nearly smooth. 2n = 8.
Phenology: Flowering Apr–Jun(–Oct).
Habitat: Sand and gravel bars, limestone soils, Larrea flats, mesquite savannas, roadsides, disturbed sites
Elevation: 700–1600 m
Distribution
Ariz., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, Nuevo León, Tamaulipas, Zacatecas).
Discussion
Selected References
None.
Lower Taxa
None.