Agoseris aurantiaca
mountain agoseris, mountain dandelion, orange agoseris, orange false dandelion, orange flower agoseris, slender agoseris
0.
erect to decumbent;
petioles purplish, petiole margins ciliate to hairy;
blades 7–38 cm, linear-lanceolate to oblanceolate, margins entire or laciniately pinnatifid, lobes 2–4 pairs, linear to lanceolate, spreading to antrorse, lobules usually inconspicuous to subequaling lobes, rarely lacking, faces glabrous and ± glaucous or sparsely villous.
± elongating after flowering, 8–40(–80) cm, glabrate, or apically villous to lanate, eglandular.
cylindric to obconic or campanulate, 2.5–3 cm at maturity.
epaleate.
15–100;
corollas usually orange, sometimes yellow, pink, red, purple, or white, tubes (4–)7–9 mm, ligules 4–12 × 1–3 mm;
anthers 2–5 mm.
in 2–3 series, green or medially rosy purple, often with purple-black spots, blotches, and/or midstripes, or nearly all black, subequal to unequal, margins ciliate, faces glabrous or villous, eglandular;
outer mostly spreading, adaxially glabrous or villous;
inner erect, elongating after flowering.
± dimorphic, 8–18 mm, bodies cylindric to fusiform or obconic, 6–9(–11) mm, abruptly or gradually tapered to slender beaks (2–)5–10 mm, lengths mostly equaling bodies;
ribs strongly ridged, straight, glabrous or scabrous;
pappi in 2–3 series, 9–15 mm.
= 18, 36.
Agoseris aurantiaca
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Phyllaries ± lanceolate (± herbaceous throughout), margins ± ciliate proximally, usually villous, sometimes glabrous; corollas usually orange, sometimes pinkish or yellow, rarely white; cypselae ± abruptly tapered to beaks, ribs often thicker distally | var. aurantiaca |
1. Phyllaries ± ovate or obovate (somewhat stramineous proximally), margins ± ciliate distally, usually glabrous, rarely villous; corollas usually orange or yellow, sometimes pinkish; cypselae ± gradually tapered to beaks, ribs not thicker distally | var. purpurea |
BC
OR
WA
CalFlora
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
