Ericameria palmeri

(A. Gray) H. M. Hall

Univ. Calif. Publ. Bot. 3: 53. 1907.

Basionym: Haplopappus palmeri A. Gray Proc. Amer. Acad. Arts 11: 74. 1876 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 70. Mentioned on page 54.

Plants 50–400 cm. Stems erect, much branched, twigs crowded, green when young, becoming reddish brown to gray, glabrous or sparsely hairy, usually covered with resin-filled pits. Leaves (moderately crowded) ascending to spreading; blades linear to narrowly oblanceolate (terete, sulcate, or flattened), 5–50 × 0.5–2 mm, midnerves obscure or evident abaxially, apices acute, faces glabrous or moderately hairy, gland-dotted (in circular, deep pits), resinous; axillary fascicles with 1–10 leaves, shorter than subtending leaves. Heads in racemiform to thyrsiform arrays (to 50 × 2–15 cm). Peduncles 2–15 mm (bracts 5–10+, leaflike). Involucres turbinate to subcampanulate, 4–7 × 2.5–4 mm. Phyllaries 16–24 in 3–5 series, mostly tan, narrowly oblong to elliptic, 1.5–6 × 0.4–0.8 mm, unequal, mostly chartaceous, midnerves evident on at least distal 1/2, slightly to strongly thickened, expanded distally, (margins narrowly membranous, sometimes ciliate distally) apices acute to rounded, abaxial faces glabrous, outer sometimes gland-dotted (sessile), frequently resinous. Ray florets 2–8; laminae 4–5 × 1–1.8 mm. Disc florets 6–20; corollas 5–7 mm. Cypselae tan to brown, subcylindric, 3.5–4 mm, moderately to densely hairy; pappi off-white to brown, 5–8 mm. 2n = 18.


Varieties 2 (2 in the flora).

Selected References



1 Leaves 8–20(–30) mm; axillary leaves 2–10 per fascicle; subapical resin ducts on at least outer and mid phyllaries strongly thickened; midnerves usually not evident on proximal 1/2 of each phyllary; florets 6–12(–14); Riverside to Ventura counties, California Ericameria palmeri var. pachylepis
1 Leaves 20–40 mm; axillary leaves 1–2 per fascicle; subapical resin ducts on phyllaries not strongly thickened; midnerves usually evident on proximal 1/2 of each phyllary; florets 12–30; San Diego County, California Ericameria palmeri var. palmeri
... more about "Ericameria palmeri"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) H. M. Hall +
Haplopappus palmeri +
Calif. +  and nw Mexico. +
Univ. Calif. Publ. Bot. +
Haplopappus sect. Asiris +, Haplopappus sect. Ericameria +, Haplopappus sect. Macronema +  and Haplopappus sect. Stenotopsis +
Ericameria palmeri +
Ericameria +
species +