Xylorhiza confertifolia

(Cronquist) T. J. Watson

Brittonia 29: 207. 1977.

Common names: Henrieville woody-aster
EndemicConservation concern
Basionym: Machaeranthera glabriuscula var. confertifolia Cronquist Leafl. W. Bot. 10: 11. 1963
Synonyms: Machaeranthera confertifolia (Cronquist) Cronquist
Treatment appears in FNA Volume 20. Treatment on page 408. Mentioned on page 406.

Subshrubs 10–15(–23) cm. Stems branched mostly in proximal 3/4 (leaves numerous, crowded, internodes averaging 2–3 mm), finely stipitate-glandular or nearly glabrous. Leaf blades linear, 1–2.5 mm wide, bases attenuate, not clasping, margins involute, entire, faces puberulent and/or minutely stipitate-glandular. Peduncles 2–14 cm. Involucres 8–12 × 10–16(–20) mm. Ray florets 4–14; corollas white. Style-branch appendages ± equal stigmatic lines. 2n = 12.


Phenology: Flowering May–Jul.
Habitat: Barren slopes in alkaline clay, pinyon-juniper
Elevation: 1400–2300 m

Discussion

Of conservation concern.

Xylorhiza confertifolia is known form Garfield and Kane counties.

Selected References

None.

Lower Taxa

None.
... more about "Xylorhiza confertifolia"
Guy L. Nesom +
(Cronquist) T. J. Watson +
Machaeranthera glabriuscula var. confertifolia +
Henrieville woody-aster +
1400–2300 m +
Barren slopes in alkaline clay, pinyon-juniper +
Flowering May–Jul. +
Endemic +  and Conservation concern +
Machaeranthera confertifolia +
Xylorhiza confertifolia +
Xylorhiza +
species +