Difference between revisions of "Xylorhiza orcuttii"

(Vasey & Rose) Greene

Pittonia 3: 48. 1896.

Common names: Orcutt’s woody-aster
Basionym: Aster orcuttii Vasey & Rose Bot. Gaz. 16: 113. 1891
Synonyms: Machaeranthera orcuttii (Vasey & Rose) Cronquist & D. D. Keck
Treatment appears in FNA Volume 20. Treatment on page 407. Mentioned on page 406.
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Latest revision as of 20:06, 5 November 2020

Shrubs, 50–150 cm. Stems branched to near apices, glabrous (younger stems and branchlets glabrous, eglandular). Leaf blades spatulate to oblong or lanceolate, 5–26 mm wide, bases attenuate to cuneate or subauriculate-subclasping, margins flat, spinulose-dentate to subentire, faces glabrous or sericeous along veins. Peduncles 1–7 cm. Involucres 17–20 × 20–45 mm. Phyllaries tightly appressed, outermost glabrous, innermost equaling or longer than mid. Ray florets (18–)27–38(–45); corollas light blue to lavender. Style-branch appendages shorter than stigmatic lines. 2n = 12.


Phenology: Flowering (Nov–)Jan–Apr(–Jun).
Habitat: Slopes and ravine bottoms, rocky sand and clay of high pH, in relatively barren areas dominated by creosote bush and cactus
Elevation: 20–300 m

Distribution

V20-929-distribution-map.gif

Calif., Mexico (Baja California).

Discussion

Of conservation concern.

Xylorhiza orcuttii grows in Imperial, Riverside, and San Diego counties.

Selected References

None.

Lower Taxa

None.
... more about "Xylorhiza orcuttii"
Guy L. Nesom +
(Vasey & Rose) Greene +
Aster orcuttii +
Orcutt’s woody-aster +
Calif. +  and Mexico (Baja California). +
20–300 m +
Slopes and ravine bottoms, rocky sand and clay of high pH, in relatively barren areas dominated by creosote bush and cactus +
Flowering (Nov–)Jan–Apr(–Jun). +
Machaeranthera orcuttii +
Xylorhiza orcuttii +
Xylorhiza +
species +