Flora of North America species comparison

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Xylorhiza glabriuscula

common woody aster, smooth woody-aster
Habit 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.
Style-branch appendages

equal or shorter than stigmatic lines.
Ray florets

12–25;

corollas white.
2n

= 12.

Xylorhiza glabriuscula
Phenology Flowering May–Jun(–Jul).
Habitat Open sites, selenious, alkaline clays, dominated by sagebrush, saltbush, greasewood, and grasses
Elevation 1100–2300 m [3600–7500 ft]
Distribution
map from FNA
CO; MT; SD; UT; WY
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Astereae > Xylorhiza
Sibling taxa
X. cognata, X. confertifolia, X. cronquistii, X. linearifolia, X. orcuttii, X. tortifolia, X. venusta, X. wrightii
Synonyms Aster parryi, Machaeranthera glabriuscula, Machaeranthera glabriuscula var. villosa, X. glabriuscula var. villosa, X. villosa
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 297. (1840)
Source FNA vol. 20, p. 407. Treatment author: Guy L. Nesom.
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Boraginaceae and Polemoniaceae.)

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