Ericameria obovata

(Rydberg) G. L. Nesom

Phytologia 68: 152. 1990.

Common names: Rydberg’s goldenbush
Endemic
Basionym: Macronema obovatum Rydberg Bull. Torrey Bot. Club 27: 618. 1900
Synonyms: Haplopappus rydbergii S. F. Blake Haplopappus watsonii var. rydbergii (S. F. Blake) S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 69. Mentioned on page 53.

Plants 20–40 cm. Stems erect to ascending, green, becoming tan, branched, stipitate-glandular. Leaves ascending; blades obovate to spatulate (flat), 10–30 × 4–12 mm, midnerves evident (1–2 collateral nerves sometimes present, abaxial reticulum of secondary veins often evident), (margins often undulate) apices obtuse, apiculate, faces densely stipitate-glandular; axillary fascicules usually absent. Heads in cymiform to racemiform arrays (1–3 cm wide). Peduncles 1–7 mm (stipitate-glandular). Involucres obconic, 6–8 × 4–7 mm. Phyllaries 22–28 in 4–6 series, tan, ovate to elliptic, 1–6 × 0.5–1.2 mm, strongly unequal, mostly chartaceous, midnerves evident, (margins narrowly membranous, entire or minutely lacerate) apices acute to acuminate, abaxial faces mostly stipitate-glandular, resinous. Ray florets 4–9; laminae elliptic, 3.5–6 × 1.2–1.8 mm. Disc florets 9–15; corollas 6.2–6.8 mm. Cypselae tan to reddish brown, columnar, 3.5–4.5 mm [ribs unknown], villous; pappi tan, 4–5.5 mm. 2n = 36.


Phenology: Flowering late summer–fall.
Habitat: Open rocky soils, mostly associated with desert shrub, pinyon-juniper, and lower ponderosa pine
Elevation: 1500–3400 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ericameria obovata"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(Rydberg) G. L. Nesom +
Macronema obovatum +
Rydberg’s goldenbush +
1500–3400 m +
Open rocky soils, mostly associated with desert shrub, pinyon-juniper, and lower ponderosa pine +
Flowering late summer–fall. +
Haplopappus rydbergii +  and Haplopappus watsonii var. rydbergii +
Ericameria obovata +
Ericameria +
species +