Agoseris parviflora
Agoseris aurantiaca
false dandelion, sagebrush agoseris, steppe agoseris
mountain agoseris, mountain dandelion, orange agoseris, orange false dandelion, orange flower agoseris, slender agoseris
0.
0.
erect to decumbent;
petioles sometimes purplish, margins usually ± hairy, sometimes glabrous or ciliate;
blades linear-lanceolate to oblanceolate, (5–)10–20(–32) cm, margins usually lobed, sometimes entire (variable within plants, e.g., outer entire, inner lobed), rarely all entire;
lobes (3–)5–8 pairs, linear to lanceolate, mostly retrorse, sometimes spreading;
lobules often present, faces glabrous and glaucous or densely tomentose.
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.
not notably elongating after flowering, [(6–)10–25(–45) cm in fruit], glabrate, or apically hairy to lanate, eglandular.
± elongating after flowering, 8–40(–80) cm, glabrate, or apically villous to lanate, eglandular.
obconic to hemispheric, 2–3.5 cm in fruit.
cylindric to obconic or campanulate, 2.5–3 cm at maturity.
epaleate.
epaleate.
30–100;
corollas yellow, tubes (4–)6–15 mm, ligules 10–20 × 2–4 mm;
anthers 3–5 mm.
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, usually medially rosy purple, rarely all green or spotted, margins ciliate or lanate, faces glabrous or sparsely villous, eglandular;
outer erect or spreading, adaxially ± tomentose (sometimes glabrous);
inner erect, not notably elongating after flowering.
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.
9–18 mm, bodies terete or narrowly conic to obconic, 5–9 mm, beaks 3–10 mm, lengths (1/2–)2 times bodies;
pappus bristles in ca. 3 series, 10–20 mm.
± 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.
= 18, 36.
Agoseris parviflora
Agoseris aurantiaca
Agoseris parviflora is found in drier habitats from western Great Plains to eastern foothills of the Cascade Mountains and Sierra Nevada. This is A. glauca var. laciniata of recent authors. The inclusion of A. parviflora within an expanded A. glauca is based partly on the mistaken perception that those two species readily intergrade and that A. parviflora is a xeric variant of the more mesic A. glauca. Although hybrids between the two species occur, frequency of intermediates is no greater than that of any other species in the genus. Agoseris parviflora is known to form intermediates with A. aurantiaca, A. monticola, and A. retrorsa as well. This species exhibits some regional variations. In their extremes, these phases appear more or less distinct but they so completely intergrade that their separation becomes arbitrary.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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 |
CA
OR
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
BC
WA
