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.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

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 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

"fine" is not a number.

... more about "Ericameria palmeri"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
racemiform +  and thyrsiform +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) H. M. Hall +
decurrent +
Haplopappus palmeri +
compound +  and simple +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
linear;narrowly oblanceolate +
0.5mm;2mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
not 2-lipped +  and actinomorphic +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
tan +  and brown +
subcylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and nw Mexico +
resinous +
gland-dotted +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
thyrsiform +, paniculiform +, branched +, racemiform +, cymiform +, discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;subcampanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1mm;1.8mm +
sessile +  and petiolate +
1 (?) +  and 10 (?) +
erect;spreading or reflexed +
deltate +  and triangular +
evident +  and obscure +
2-carpellate +
off-white +  and brown +
persistent +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
narrowly oblong +  and elliptic +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
resin-filled +
Univ. Calif. Publ. Bot. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
gland-dotted +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus sect. Asiris +, Haplopappus sect. Ericameria +, Haplopappus sect. Macronema +  and Haplopappus sect. Stenotopsis +
Ericameria palmeri +
Ericameria +
species +
campanulate +
reddish-brown +  and gray +
hairy +  and glabrous +
perennial +, biennial +  and annual +