Ericameria laricifolia

(A. Gray) Shinners

Field & Lab. 18: 27. 1950.

Common names: Turpentine bush
Basionym: Haplopappus laricifolius A. Gray Smithsonian Contr. Knowl. 5(6): 80. 1853 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 60. Mentioned on page 51, 54.
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Plants 30–100 cm. Stems erect to ascending, green when young, fastigiately branched, glabrous, gland-dotted, resinous. Leaf blades ascending, sometimes spreading when older, filiform to narrowly oblanceolate (adaxially sulcate to concave), 10–20 × 1–2 mm, midnerves not evident, apices acute, sometimes apiculate, faces glabrous, regularly gland-dotted (in circular, deep pits), resinous; axillary leaf fascicles sometimes present, shorter than subtending leaves. Heads in irregular cymiform arrays (to 7 cm wide). Peduncles 3–15 mm (bracts 3–20+, mostly leaflike, distal scalelike). Involucres turbinate, 3–5 × 3–5 mm. Phyllaries 12–20 in 3–4 series, tan, linear to lanceolate, 1–3.5 × 0.5–1 mm, unequal, mostly chartaceous, sometimes herbaceous-tipped, erect, midnerves raised, somewhat expanded apically, subapical resin ducts usually present, (margins scarious to narrowly membranous, glabrous or ciliate) apices erect, acute, sometimes apiculate, abaxial faces glabrous. Ray florets 3–6; laminae 4–5 × 1–2 mm. Disc florets 6–16; corollas 5–6 mm. Cypselae tan to brown, turbinate to narrowly oblanceolate, 3.5–4 mm (ribs ca. 5), villous; pappi off-white to brown, 3.5–5 mm. 2n = 18.


Phenology: Flowering fall.
Habitat: Rocky, desert mountains on slopes, mesas, canyons, and rock walls
Elevation: 1000–2000 m

Distribution

V20-95-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Tex., Utah, Mexico (Chihuahua).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ericameria laricifolia"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) Shinners +
Haplopappus laricifolius +
Turpentine bush +
Ariz. +, Calif. +, Nev. +, N.Mex. +, Tex. +, Utah +  and Mexico (Chihuahua). +
1000–2000 m +
Rocky, desert mountains on slopes, mesas, canyons, and rock walls +
Flowering fall. +
Field & Lab. +
Haplopappus sect. Asiris +, Haplopappus sect. Ericameria +, Haplopappus sect. Macronema +  and Haplopappus sect. Stenotopsis +
Ericameria laricifolia +
Ericameria +
species +