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Watson's goldenbush

Winward's goldenbush

Habit Plants 5–40 cm. Plants 5–20 cm.
Stems

erect to spreading (close to the ground), green when young, becoming pale reddish brown, highly branched, coarsely long-stipitate-glandular.

stems prostrate or ascending to erect, green when young (± concealed by tomentum), becoming tan to brown, moderately branched, densely floccose-tomentose, eglandular.

Leaves

(crowded) ascending;

blades elliptic to oblanceolate, 10–25 × 3–8 mm, midnerves evident (1–2 fainter, collateral nerves often present), (margins undulate) apices acute, apiculate, faces long-stipitate-glandular;

fascicles usually absent, (sometimes of 1–3 reduced leaves).

ascending;

blades elliptic or oblanceolate (flat), 6–15 × 2.5–5 mm, midnerves prominent, apices acute (often curved downward), faces densely silvery white floccose-tomentose, eglandular;

fascicles absent.

Peduncles

1–12 mm (bracts 3–20, crowded, leafy, grading into phyllaries).

1–5 mm (tomentose, bracts 0–3, phyllary-like).

Involucres

broadly obconic, 6–8 × 4–7 mm.

obconic, 9–12 × 3–4 mm.

Ray florets

4–8;

laminae elliptic, 6–9 × 1–2 mm.

0.

Disc florets

12–22;

corollas 5.5–6.5 mm.

4–9;

corollas ca. 9 mm.

Phyllaries

25–30 in 3–4 series, green to tan, ovate to oblong, 4–8 × 0.7–1.5 mm, unequal, outer herbaceous or with herbaceous appendages, inner mostly chartaceous, midnerves usually evident, (margins entire, outer often herbaceous, inner scarious) apices acute to acuminate or attenuate, abaxial faces mostly stipitate-glandular.

11–15 in 2–3 series, lanceolate or elliptic to oblanceolate, 1.5–5 × 0.8–1.3 mm, subequal, outer herbaceous or herbaceous-tipped, inner mostly chartaceous or herbaceous-tipped, midnerves conspicuous, raised, (margins: outer herbaceous, entire, floccose-tomentose, inner narrowly scarious, minutely lacerate) apices acute to acuminate, outer abaxial faces floccose-tomentose, inner glabrate.

Heads

usually in cymiform arrays.

usually borne singly, sometimes (2–3) in racemiform arrays (5–20 mm wide).

Cypselae

tan to brown, narrowly turbinate, 3–4.5 mm (usually 5-ribbed), moderately sericeous;

pappi tan, 4–5.5 mm.

tan to brown, narrowly oblanceoloid, 5–7 mm (5-ribbed), densely sericeous;

pappi tan, 8–9 mm.

2n

= 18.

Ericameria watsonii

Ericameria winwardii

Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Rock outcrops, desert scrub, pinyon-juniper, ponderosa pine communities Silty-clay and clay-shale slopes
Elevation 1300–3400 m (4300–11200 ft) 2000–2200 m (6600–7200 ft)
Distribution
from FNA
AZ; NV; UT
[BONAP county map]
from FNA
ID; WY
[BONAP county map]
Discussion

Of conservation concern.

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

Source FNA vol. 20, p. 77. FNA vol. 20, p. 77.
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. palmeri, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. winwardii, E. zionis
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. palmeri, E. paniculata, E. parishii, E. parryi, E. pinifolia, E. resinosa, E. suffruticosa, E. teretifolia, E. watsonii, E. zionis
Synonyms Haplopappus watsonii E. discoidea var. winwardii
Name authority (A. Gray) G. L. Nesom: Phytologia 68: 152. (1990) (Dorn & Delmatier) R. P. Roberts & Urbatsch: Sida 21: 1562. (2005)
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