Ericameria paniculata

(A. Gray) Rydberg

Fl. Rocky Mts., 1066. 1917.

Common names: Mojave or punctate rabbitbrush
Basionym: Bigelowia paniculata A. Gray Proc. Amer. Acad. Arts 8: 644. 1873 (as Bigelovia)
Synonyms: Chrysothamnus paniculatus (A. Gray) H. M. Hall
Treatment appears in FNA Volume 20. Treatment on page 71. Mentioned on page 53.
Revision as of 18:41, 24 September 2019 by FNA>Volume Importer

Plants 50–200 cm. Stems erect to spreading, green when young, often black-banded or splotched (from fungal infections), fastigiately branched, glabrous, gland-dotted, resinous. Leaves mostly ascending; blades filiform (adaxially sulcate), 10–35 × 0.5–1.5 mm, midnerves obscure, apices apiculate, faces glabrous, gland-dotted (in circular, deep pits), resinous; axillary fascicles usually absent. Heads in paniculiform arrays (5–50 mm wide). Peduncles 2–12 mm (bracts 0–10, leaflike). Involucres subcylindric, 5.5–9 × 3.5–7 mm. Phyllaries 13–20 in 3–5 series, tan, lanceolate to elliptic, 1–5 × 0.5–1.7 mm, unequal, mostly chartaceous, membranous, midnerves not or slightly raised, faint on distal 1/2, (margins entire, sometimes ciliate distally) apices erect, acute to rounded, apiculate, abaxial faces glabrous, ± resinous. Ray florets 0. Disc florets 5–8; corollas 5–7 mm. Cypselae tan to brown, narrowly elliptic to oblanceoloid, 3.5–4.5 mm (ribs ca. 5), sericeous; pappi off-white to brown, 5.5–6.5 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Stony open deserts and washes
Elevation: 400–1600 m

Distribution

V20-127-distribution-map.gif

Ariz., Calif., Nev., Utah.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ericameria paniculata"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) Rydberg +
Bigelowia paniculata +
Mojave or punctate rabbitbrush +
Ariz. +, Calif. +, Nev. +  and Utah. +
400–1600 m +
Stony open deserts and washes +
Flowering late summer–fall. +
Fl. Rocky Mts., +
Chrysothamnus paniculatus +
Ericameria paniculata +
Ericameria +
species +