Xylorhiza glabriuscula

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 297. 1840.

Common names: Smooth woody-aster
IllustratedEndemic
Synonyms: Aster parryi A. Gray Machaeranthera glabriuscula (Nuttall) Cronquist & D. D. Keck Machaeranthera glabriuscula var. villosa (Nuttall) Cronquist & D. D. Keck Xylorhiza glabriuscula var. villosa (Nuttall) A. Nelson Xylorhiza villosa
Treatment appears in FNA Volume 20. Treatment on page 407. Mentioned on page 406.

Subshrubs, 10–25 cm. Stems branched mostly in proximal 3/4 (leafy 2/3+ their lengths), villoso-puberulent or glabrous, eglandular. Leaf-blades oblanceolate, 2.5–8 mm wide, bases attenuate, not clasping, margins flat, entire, faces villoso-puberulent or glabrous, eglandular. Peduncles 2–6 cm. Involucres 7–14 × 12–25 mm. Ray-florets 12–25; corollas white. Style-branch appendages equal or shorter than stigmatic lines. 2n = 12.


Phenology: Flowering May–Jun(–Jul).
Habitat: Open sites, selenious, alkaline clays, dominated by sagebrush, saltbush, greasewood, and grasses
Elevation: 1100–2300 m

Distribution

V20-930-distribution-map.gif

Colo., Mont., S.Dak., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Xylorhiza glabriuscula"
stipitate-glandular +, sparsely tomentose +  and villous +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
Nuttall +
attenuate +
linear;lanceolate or oblanceolate oblong or narrowly elliptic +
rugulose +  and muricate +
Smooth woody-aster +
not 2-lipped +  and actinomorphic +
fusiform +  and linear or ovoid more or less compressed +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +, Mont. +, S.Dak. +, Utah +  and Wyo. +
1100–2300 m +
glabrous +  and villoso-puberulent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open sites, selenious, alkaline clays, dominated by sagebrush, saltbush, greasewood, and grasses +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
4 cm40 mm <br />0.04 m <br /> (4.8 cm48 mm <br />0.048 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
campanulate;hemispheric +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
oblanceolate +
subpetiolate +  and sessile +
triangular +
2-carpellate +
persistent +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering May–Jun(–Jul). +
lanceolate +
Trans. Amer. Philos. Soc., n. s. +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Illustrated +  and Endemic +
eglandular +  and branched +
glabrous +  and villoso-puberulent +
appendaged +  and truncate +
papillate +  and smooth +
Aster parryi +, Machaeranthera glabriuscula +, Machaeranthera glabriuscula var. villosa +, Xylorhiza glabriuscula var. villosa +  and Xylorhiza villosa +
Xylorhiza glabriuscula +
Xylorhiza +
species +
shorter to longer +
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +