Agoseris aurantiaca var. aurantiaca

IllustratedEndemic
Synonyms: Agoseris angustissima Greene Agoseris arachnoidea Rydberg Agoseris carnea Rydberg Agoseris gaspensis Fernald Agoseris gracilens (A. Gray) Greene Agoseris gracilens var. greenei Agoseris greenei Greene Agoseris howellii Douglas M. Henderson & R. K. Moseley Agoseris lackschewitzii Rydberg Agoseris nana J. Rousseau & Raymond Agoseris naskapensis Greene Agoseris prionophylla G. N. Jones Agoseris subalpina Greene Agoseris vulcanica
Treatment appears in FNA Volume 19. Treatment on page 327. Mentioned on page 328.

Leaf-blades: margins entire, dentate, or laciniately pinnatifid, faces glabrous or sparsely villous, mostly not glaucous. Peduncles: lengths mostly shorter than leaves at flowering, glabrate, or apically villous. Phyllaries green or medially rosy purple, often purple-black spotted or blotched, with or without purple-black midstripes, narrowly to broadly lanceolate, mostly subequal at flowering, or outer longer than inner, herbaceous, faces usually villous, sometimes glabrous, margins ciliate, especially proximally; outer adaxially ± villous. Corollas usually orange, sometimes pinkish or yellow, rarely white, mostly subequal to inner phyllaries. Cypselae: bodies ± abruptly contracted to beaks, ribs often more strongly ridged distally than proximally, mostly hirsutellous. 2n = 18.


Phenology: Flowering Jun–Sep.
Habitat: Wet meadows, bogs, muskegs, stream and lake margins, montane to alpine habitats, or ± drier sites of open forests and mountain slopes, various soils, often disturbed areas, roadsides
Elevation: 200–3600 m

Distribution

V19-498-distribution-map.gif

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

Discussion

Variety aurantiaca is widespread in the western cordillera and is disjunct in Quebec. Two morphologic trends occur within this variety. Plants of wetter habitats represent the typical var. aurantiaca; those of drier habitats resemble what past authors have called Agoseris gracilens (including A. gracilens var. greenei). There is a weak geographic trend to this variation, with the aurantiaca phase occurring mostly along the Rocky Mountains axis and the gracilens phase mostly along the Cascade Mountains-Sierra Nevada axis. In their extremes they appear distinct, but their intergradation is so complete that separation becomes arbitrary. Putative hybrids between var. aurantiaca and A. glauca, A. grandiflora, A. monticola, and A. parviflora have been collected.

Corolla color in var. aurantiaca is variable but most commonly orange. Pink-flowered forms occur sporadically. They have been recognized as Agoseris lackschewitzii. Recognition of pink forms is unmerited; if it were, the older name A. carnea would have priority.

Selected References

None.

Lower Taxa

None.

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

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 +
pistillate +  and staminate +
white +, yellow +, pinkish +  and orange +
subequal +
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 +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
200–3600 m +
purple-black +
glaucous +, villous +  and glabrous +
winged +  and beaked +
dispersed +
Wet meadows, bogs, muskegs, stream and lake margins, montane to alpine habitats, or ± drier sites of open forests and mountain slopes, various soils, often disturbed areas, roadsides +
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 +
purple-black +
pinnatifid +  and dentate +
2-carpellate +
pistillate +  and staminate +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
villous +, glabrate +  and mostly shorter +
villous +  and glabrate +
ciliate +  and hairy +
Flowering Jun–Sep. +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
connate +  and distinct +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
with or without purple-black midstripes , narrowly to broadly lanceolate , mostly subequal at flowering , or outer phyllaries longer than inner phyllaries , herbaceous , faces usually villous , sometimes glabrous , margins ciliate , especially proximally +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
straight +
hirsutellous +
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 +
Agoseris angustissima +, Agoseris arachnoidea +, Agoseris carnea +, Agoseris gaspensis +, Agoseris gracilens +, Agoseris gracilens var. greenei +, Agoseris greenei +, Agoseris howellii +, Agoseris lackschewitzii +, Agoseris nana +, Agoseris naskapensis +, Agoseris prionophylla +, Agoseris subalpina +  and Agoseris vulcanica +
Agoseris aurantiaca var. aurantiaca +
Agoseris aurantiaca +
variety +
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 +