Palafoxia callosa
Fl. N. Amer. 2: 369. 1842.
Basionym: Stevia callosa Nuttall J. Acad. Nat. Sci. Philadelphia 2: 121. 1821
Revision as of 21:15, 5 November 2020 by imported>Volume Importer
Annuals, 20–60 cm. Stems scabrous to glabrate, not stipitate-glandular. Leaf blades linear, 20–70 × 1–4 mm. Involucres ± turbinate. Phyllaries 3–5 × 1+ mm, ± equal, ± strigillose, not stipitate-glandular. Ray florets 0. Disc florets 5–30; corollas actinomorphic, 5–6 mm, throats ± funnelform, shorter than lobes. Cypselae 3–5 mm; pappus scales of inner cypselae 0.3–1 mm. 2n = 20.
Phenology: Flowering summer–fall.
Habitat: Rocky, calcareous soils
Elevation: 50–300 m
Distribution
![V21-984-distribution-map.gif](/w/images/8/8b/V21-984-distribution-map.gif)
Ark., Mo., Tex., Mexico (Coahuila).
Discussion
Some depauperate specimens of Palafoxia rosea (e.g., Oklahoma, Beckham Co., 17 Oct 1936, Eskero 1502, US) closely resemble P. callosa.
Selected References
None.
Lower Taxa
None.