Hasteola robertiorum L.C.Anderson

Plants (50–)60–100(–150) cm. Leaves: basal 25–54 cm, proximal cauline 25–32 cm, proximal cauline blades deltate (distal appearing sessile, petioles prominently winged). Involucres cylindric, 8–12.5 mm. Phyllaries 7–9. Florets 10–14; corollas pale greenish white, 9–10 mm; anthers 1.5–2 mm. Cypselae light golden brown with darker brown veins, 6–9 mm; pappi 4–6 mm. 2n = 40.