Difference between revisions of "Xylorhiza tortifolia var. imberbis"

(Cronquist) T. J. Watson

Brittonia 29: 211. 1977.

Common names: Smooth Mojave woody-aster
Basionym: Machaeranthera tortifolia var. imberbis Cronquist
Treatment appears in FNA Volume 20. Treatment on page 409. Mentioned on page 408.
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|elevation=600–1900 m
 
|elevation=600–1900 m
 
|distribution=Ariz.;Nev.;Utah.
 
|distribution=Ariz.;Nev.;Utah.
|discussion=<p>The geographic distribution of var. imberbis usually follows the canyons of the Colorado River of Utah and adjacent Arizona at least to Toroweap Point; it also occurs in Clark and Nye counties, Nevada, where it intergrades with var. tortifolia (A. Cronquist 1994).</p>
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|discussion=<p>The geographic distribution of <i></i>var.<i> imberbis</i> usually follows the canyons of the Colorado River of Utah and adjacent Arizona at least to Toroweap Point; it also occurs in Clark and Nye counties, <i>Nevada</i>, where it intergrades with <i></i>var.<i> tortifolia</i> (A. Cronquist 1994).</p>
 
|tables=
 
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|references=
 
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|publication year=1977
 
|publication year=1977
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_936.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_936.xml
 
|tribe=Asteraceae tribe Astereae
 
|tribe=Asteraceae tribe Astereae
 
|genus=Xylorhiza
 
|genus=Xylorhiza

Revision as of 15:28, 18 September 2019

Stems, leaves, and involucres glabrous, stipitate-glandular. Leaf margins sparsely piloso-villous to puberulent. 2n = 12.


Phenology: Flowering Apr–May(–Jun).
Habitat: Sandy or gravelly slopes and flats, in pinyon-juniper, sagebrush, and blackbrush zones
Elevation: 600–1900 m

Discussion

The geographic distribution of var. imberbis usually follows the canyons of the Colorado River of Utah and adjacent Arizona at least to Toroweap Point; it also occurs in Clark and Nye counties, Nevada, where it intergrades with var. tortifolia (A. Cronquist 1994).

Selected References

None.

Lower Taxa

None.
Guy L. Nesom +
(Cronquist) T. J. Watson +
Machaeranthera tortifolia var. imberbis +
Smooth Mojave woody-aster +
Ariz. +, Nev. +  and Utah. +
600–1900 m +
Sandy or gravelly slopes and flats, in pinyon-juniper, sagebrush, and blackbrush zones +
Flowering Apr–May(–Jun). +
Illustrated +  and Endemic +
Machaeranthera tortifolia +
Xylorhiza tortifolia var. imberbis +
Xylorhiza tortifolia +
variety +