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Palmer goldenweed, Palmer's goldenbush

Charleston Mountain goldenbush

Habit Plants 50–400 cm. Plants 15–50 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.

erect to spreading, green when young, becoming tan, branched proximally, often with scattered, crinkled hairs and short- stipitate-glandular hairs.

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.

mostly erect or ascending;

blades oblanceolate to narrowly spatulate, 20–40 × 2–3(–5) mm, midnerves evident, apices acute to acuminate, faces short-stipitate-glandular, sometimes gland-dotted (sessile), resinous;

axillary fascicles of 1–7 reduced leaves often proximally present, distally absent.

Peduncles

2–15 mm (bracts 5–10+, leaflike).

1–15 mm (bracts 0–3, usually resembling phyllaries).

Involucres

turbinate to subcampanulate, 4–7 × 2.5–4 mm.

narrowly campanulate, 12–15 × 4.5–5.5 mm.

Ray florets

2–8;

laminae 4–5 × 1–1.8 mm.

0.

Disc florets

6–20;

corollas 5–7 mm.

10–16;

corollas 9.1–11.5 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.

18–24 in (3–)4 series, tan, ovate or lanceolate to elliptic, 4–11 × 0.6–1.2 mm, subequal, mostly chartaceous, midnerves raised, evident, apices acute to cuspidate, herbaceous-tipped, abaxial faces resinous.

Heads

in racemiform to thyrsiform arrays (to 50 × 2–15 cm).

usually in paniculiform or cymiform arrays, sometimes borne singly.

Cypselae

tan to brown, subcylindric, 3.5–4 mm, moderately to densely hairy;

pappi off-white to brown, 5–8 mm.

tan to reddish, ellipsoid, 6–10 mm, glabrate or apically sparsely hairy;

pappi off-white to brown, sometimes reddish, 7–9 mm.

2n

= 18.

= 18.

Ericameria palmeri

Ericameria compacta

Phenology Flowering late summer–fall.
Habitat Sheltered, rocky to gravelly slopes in pine forests
Elevation 2500–3500 m (8200–11500 ft)
Distribution
from FNA
CA; nw Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
NV
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
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
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
var. palmeri
Source FNA vol. 20, p. 70. FNA vol. 20, p. 56.
Parent taxa Asteraceae > tribe Astereae > Ericameria Asteraceae > tribe Astereae > Ericameria
Sibling taxa
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. compacta, E. cooperi, E. crispa, E. cuneata, E. discoidea, E. ericoides, E. fasciculata, E. gilmanii, E. greenei, E. laricifolia, E. lignumviridis, E. linearifolia, E. linearis, E. nana, E. nauseosa, E. obovata, E. ophitidis, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. winwardii, E. zionis
E. albida, E. arborescens, E. arizonica, E. bloomeri, E. brachylepis, E. cervina, E. cooperi, E. crispa, E. cuneata, E. discoidea, E. ericoides, E. fasciculata, E. gilmanii, E. greenei, E. laricifolia, E. lignumviridis, E. linearifolia, E. linearis, E. nana, E. nauseosa, E. obovata, E. ophitidis, E. palmeri, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. winwardii, E. zionis
Subordinate taxa
E. palmeri var. pachylepis, E. palmeri var. palmeri
Synonyms Haplopappus palmeri Haplopappus bloomeri subsp. compactus, Haplopappus bloomeri var. compactus, Haplopappus compactus
Name authority (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 53. (1907) (H. M. Hall) G. L. Nesom: Phytologia 68: 152. (1990)
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