Xanthisma grindelioides var. grindeloides

Treatment appears in FNA Volume 20. Treatment on page 388. Mentioned on page 387.

Plants tufted, 10–35 cm. Leaves evenly distributed along stems, margins usually ciliate, sometimes spinulose-dentate, bristles usually 0.5–1.5 mm. Heads 1 or often 2–5. Peduncles 0.5–2 cm, often bracteate to proximal to heads. 2n = 8.


Phenology: Flowering spring–summer.
Habitat: Gypseous or sandy plains or badlands
Elevation: 1000–2400 m

Distribution

V20-883-distribution-map.gif

Alta., Sask., Ariz., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., S.Dak., Utah, Wyo.

Discussion

Variety grindeloides is known to hybridize with Xanthisma coloradoense in southern Wyoming.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
obtuse;acute +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Ronald L. Hartman +
(Nuttall) D. R. Morgan & R. L. Hartman +
with green or purple-tinged strip or patch +  and herbaceous +
decurrent +
expanded +
indurate +
Eriocarpum grindelioides +
0.7 cm7 mm <br />0.007 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceolate;spatulate or narrowly ovate +
reduced +
0.2 cm2 mm <br />0.002 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not 2-lipped +  and actinomorphic +
yellow +, purple +, pink +  and white +
0.5 cm5 mm <br />0.005 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
oblong +  and narrowly obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, Sask. +, Ariz. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Utah +  and Wyo. +
1000–2400 m +
stipitate-glandular +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Gypseous or sandy plains or badlands +
discoid +  and radiate +
in corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hemispheric;campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
ovate +  and orbiculate or depressed-elliptic +
unequal +
dentate +  and serrate +
pinnatifid;entire +
sessile +  and short-petiolate +
distributed +
cauline +  and basal +
bristle-tipped +
triangular +
2-pinnatifid +, pinnatifid +  and dentate +
serrate to serrulate +
2-carpellate +
whitish +  and tawny +
persistent +
30 +  and 90 +
flattened +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
stipitate-glandular +  and hairy +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering spring–summer. +
appressed +  and reflexed +
oblong +  and broadly lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
purple +, lavender +, pink +  and white +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
densely whitish +  and tawny +
12 +  and 24 +
exalbuminous +
unequal +
distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not wiry +, branched +  and simple +
sprawling +, spreading +  and erect +
stipitate-glandular +  and hairy +
10 +  and 30 +
purple-tinged +  and green +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus nuttallii +  and Machaeranthera grindelioides +
Xanthisma grindelioides var. grindeloides +
Xanthisma grindelioides +
variety +
forming reticulum +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (50 cm500 mm <br />0.5 m <br />) +