Agoseris grandiflora var. grandiflora

Endemic
Synonyms: Agoseris cinerea Greene Agoseris grandiflora var. intermedia (Greene) G. L. Wittrock Agoseris grandiflora var. plebeia Agoseris intermedia (Suksdorf) Rydberg Agoseris marshallii (Greene) Greene Agoseris obtusifolia Agoseris plebeia
Treatment appears in FNA Volume 19. Treatment on page 330. Mentioned on page 331, 332.

Leaves: blades oblanceolate to spatulate, 10–50 cm × 10–35 mm (excluding lobes), margins dentate to lobed or pinnatifid, lobes linear-lanceolate to lanceolate. Involucres campanulate to hemispheric, 3–5.5 cm in fruit. Phyllaries medially rosy purple, rarely green, rarely spotted, lanceolate to ovate or obovate; outer often surpassing inner at flowering, margins sometimes dentate. Florets (100–) 150–300 (–500). 2n = 18


Phenology: Flowering Mar–Oct.
Habitat: Mesic to dry meadows, grasslands, sagebrush steppes, open oak or coniferous woodlands, chaparral
Elevation: 300–2500 m

Distribution

V19-503-distribution-map.gif

Calif., Idaho, Mont., Nev., Oreg., Utah, Wash.

Discussion

Variety grandiflora is most commonly found east of the Cascade Mountains and southward into California and occurs primarily in grassland, steppe, or chaparral. It has regional phases, especially southward in its range. These appear more or less distinct but they so completely intergrade that their separation becomes arbitrary. Variety grandiflora rarely forms intermediates with other species; putative hybrids with A. apargioides have been collected. It is one of the suspected parental taxa of A. ×elata, especially the Sierra Nevada populations.

Selected References

None.

Lower Taxa

None.

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

0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
Gary I. Baird +
(Nuttall) Greene +
decurrent +
Stylopappus grandiflorus +
3-4 times bodies +
0.9 cm9 mm <br />0.009 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
compound +  and simple +
40 cm400 mm <br />0.4 m <br /> (50 cm500 mm <br />0.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
oblanceolate;spatulate +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
10mm;35mm +
tuberculate +, rugose +, muricate +  and smooth +
fusiform +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
filiform +
2 (?) +  and 6 (?) +
acute +, linear-lanceolate +  and cuneate-oblanceolate +
pistillate +  and staminate +
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 +
Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +  and Wash. +
300–2500 m +
hairy +, glabrous +, less villous +  and canescent +
winged +  and beaked +
dispersed +
Mesic to dry meadows, grasslands, sagebrush steppes, open oak or coniferous woodlands, chaparral +
indeterminate +
each +  and sessile +
pistillate +  and staminate +
campanulate;hemispheric +
3 cm30 mm <br />0.03 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
opposite;irregular +
spreading;antrorse +
linear-lanceolate +  and lanceolate +
glabrous +, lanate +, ciliate +  and tomentose +
dentate +  and lobed or pinnatifid +
2-carpellate +
pistillate +  and staminate +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bracteate +  and eglandular +
less glabrate or apically villous +  and tomentose +
Flowering Mar–Oct. +
connate +  and distinct +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
nerviform +  and subalate +
straight +
ridged +
exalbuminous +
prostrate +  and ascending +
appendaged +  and truncate +
papillate +
Agoseris cinerea +, Agoseris grandiflora var. intermedia +, Agoseris grandiflora var. plebeia +, Agoseris intermedia +, Agoseris marshallii +, Agoseris obtusifolia +  and Agoseris plebeia +
Agoseris grandiflora var. grandiflora +
Agoseris grandiflora +
variety +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
perennial +, biennial +  and annual +