Palafoxia riograndensis
Rhodora 48: 84. 1946.
Revision as of 15:38, 18 September 2019 by FNA>Volume Importer
Annuals, 30–60 cm. Stems scabrous to glabrate, not stipitate-glandular. Leaf blades lance-linear, 30–70 × 2–8 mm. Involucres ± cylindric. Phyllaries 10–15 × 1–2 mm, ± equal, ± scabrous, not stipitate-glandular. Ray florets 0. Disc florets 8–25; corollas zygomorphic (outer) to actinomorphic (inner), 6–9 mm, throats ± funnelform, shorter than lobes. Cypselae 7–12 mm; pappus scales of inner cypselae 5–8 mm. 2n = 24.
Phenology: Flowering (spring–)late summer–fall.
Habitat: Sandy or silty soils
Elevation: 50–200+ m
Distribution
Tex., Mexico (Chihuahua, Coahuila).
Discussion
Selected References
None.
Lower Taxa
None.