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Senecio ertterae
T.M. Barkley
Family:
Asteraceae
Ertter's Ragwort
FNA
Resources
Theodore M. Barkley+ in Flora of North America (vol. 20)
Annuals,
20-50(-60+) cm (taproots relatively thin, twisted).
Herbage
(± turgid or subsucculent) unevenly villous-tomentose, glabrescent.
Stems
usually single, rarely clustered.
Leaves
progressively reduced distally (basal usually withering before flowering); petiolate (petioles winged); blades oblanceolate to spatulate, 4-7 × 1.5-3 cm, bases tapered, margins incised (distal leaves sessile, bractlike).
Heads
6-10(-20) in cymiform arrays.
Calyculi
of 1-5+ linear to subulate bractlets (to 4 mm).
Phyllaries
± 13, 6-7 mm, tips green.
Ray florets
± 8 (± 13-); corolla laminae 5-6 mm.
Cypselae
usually hairy (especially on angles), sometimes glabrous.
2
n
= 40.
Flowering late summer-early fall. Talus slopes of greenish yellow ash tuff; of conservation concern; 900-1200 m; Oreg.
Senecio erterrae
is in the Center for Plant Conservation´s National Collection of Endangered Plants.
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