Agoseris aurantiaca

(Hooker) Greene

Pittonia 2: 177. 1891.

Common names: Orange or mountain agoseris
IllustratedEndemic
Basionyms: Troximon aurantiacum Hooker Fl. Bor.-Amer. 1: 300, plate 104. 1833
Treatment appears in FNA Volume 19. Treatment on page 327. Mentioned on page 324, 325, 328, 329, 333, 3.

Stems 0. Leaves 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. Peduncles ± elongating after flowering, 8–40 (–80) cm, glabrate, or apically villous to lanate, eglandular. Involucres cylindric to obconic or campanulate, 2.5–3 cm at maturity. Phyllaries 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. Receptacles epaleate. Florets 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. Cypselae ± 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. 2n = 18, 36.

Distribution

V19-497-distribution-map.gif

Alta., B.C., N.W.T., Que., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mont., N.Mex., Nev., Oreg., S.Dak., Utah, Wash., Wyo.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

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 Agoseris aurantiaca 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 Agoseris aurantiaca var. purpurea

"fine" is not a number."elongating" is not a number.

... more about "Agoseris aurantiaca"
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
Gary I. Baird +
(Hooker) Greene +
decurrent +
Troximon aurantiacum +
compound +  and simple +
linear-lanceolate;oblanceolate +
7 cm70 mm <br />0.07 m <br /> (38 cm380 mm <br />0.38 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
tapered;cylindric;fusiform or obconic +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
filiform +
2 (?) +  and 6 (?) +
acute +, linear-lanceolate +  and cuneate-oblanceolate +
Orange or mountain agoseris +
pistillate +  and staminate +
white +, purple +, red +, pink +, yellow +  and orange +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
papillate +
tapered +, beaked +, flattened +, obcompressed +, compressed +, prismatic +, fusiform +, ellipsoid +, columnar +  and clavate +
Alta. +, B.C. +, N.W.T. +, Que. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, N.Mex. +, Nev. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
villous +, glabrous +  and glaucous +
winged +  and beaked +
dispersed +
indeterminate +
each +  and sessile +
pistillate +  and staminate +
cylindric;obconic or campanulate +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
spreading;antrorse +
linear +  and lanceolate +
inconspicuous +
pinnatifid +  and entire +
blotches +  and purple-black spots +
villous +  and glabrous +
2-carpellate +
pistillate +  and staminate +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
apically villous +  and lanate +
ciliate +  and hairy +
connate +  and distinct +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
straight +
scabrous +  and glabrous +
ridged +
exalbuminous +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Illustrated +  and Endemic +
prostrate +  and ascending +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Agoseris aurantiaca +
Agoseris +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
perennial +, biennial +  and annual +