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1. Picris rhagadioloides (Linnaeus) Desfontaines, Tabl. École Bot. 89. 1804.
Crepis rhagadioloides Linnaeus, Syst. Nat. ed. 12, 2: 527. 1767; Mant. Pl., 108. 1767
Annuals. Leaf blades 20–60(–90) × 5–20+ mm. Involucres 8–12+ × 6–9+ mm, larger in fruit. Phyllaries proximally navicular, each enfolding its subtended floret, usually bristly and/or tomentulose abaxially. Cypselae (outer often arcuate) 2.5–3 mm; pappi 1–1.5 (outer cypselae) or 5–6 mm (inner cypselae). 2n = 10.
Flowering Jun. Disturbed sites; 100–200 m; introduced; Mo.; Europe.
The single report of Picris rhagadioloides for the flora area (as P. sprengerana from St. Louis; G. Yatskievych, pers. comm.) was confirmed for this study. Picris sprengerana (Linnaeus) Poiret has been misapplied to plants here called P. rhagadioloides (see W. Greuter 2003).
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