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3. Pseudobahia peirsonii Munz, Aliso. 2: 84, plate 12, fig. F, plate 13, fig. D. 1949.
San Joaquin adobe sunburst
Plants to 70 cm. Leaves 20–60 mm, mostly 2-pinnately (1-pinnately in smaller plants) lobed (lobes 1–5 mm wide). Peduncles 20–80 mm. Phyllaries ± 8, connate at bases, oblanceolate. Ray florets ± 8. Disc florets 25+; tubes cylindro-funnelform, gradually dilated, lobes with glandular hairs. Cypselae ± 3 mm. 2n = 16.
Flowering Mar–May. Bare, clayey areas in grasslands; of conservation concern; 100–900 m; Calif.
Within populations, some individuals of Pseudobahia peirsonii have ray corollas with ultraviolet-reflective tips, others not.
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