Ericameria watsonii

(A. Gray) G. L. Nesom

Phytologia 68: 152. 1990.

Common names: Watson’s goldenbush
Endemic
Basionym: Haplopappus watsonii A. Gray Proc. Amer. Acad. Arts 16: 79. 1881 (as Aplopappus watsoni)
Treatment appears in FNA Volume 20. Treatment on page 77. Mentioned on page 52.

Plants 5–40 cm. Stems erect to spreading (close to the ground), green when young, becoming pale reddish-brown, highly branched, coarsely long-stipitate-glandular. 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). Heads usually in cymiform arrays. Peduncles 1–12 mm (bracts 3–20, crowded, leafy, grading into phyllaries). Involucres broadly obconic, 6–8 × 4–7 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. Ray-florets 4–8; laminae elliptic, 6–9 × 1–2 mm. Disc-florets 12–22; corollas 5.5–6.5 mm. Cypselae tan to brown, narrowly turbinate, 3–4.5 mm (usually 5-ribbed), moderately sericeous; pappi tan, 4–5.5 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Rock outcrops, desert scrub, pinyon-juniper, ponderosa pine communities
Elevation: 1300–3400 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Ericameria watsonii"
stipitate-glandular +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) G. L. Nesom +
decurrent +
Haplopappus watsonii +
compound +  and simple +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elliptic;oblanceolate +
3mm;8mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Watson’s goldenbush +
not 2-lipped +  and actinomorphic +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
tan +  and brown +
turbinate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Nev. +  and Utah. +
1300–3400 m +
resinous +
gland-dotted;gland-dotted +
long-stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rock outcrops, desert scrub, pinyon-juniper, ponderosa pine communities +
thyrsiform +, paniculiform +, branched +, racemiform +, cymiform +, discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sessile +  and petiolate +
erect;spreading or reflexed +
deltate +  and triangular +
with herbaceous appendages +  and herbaceous +
2-carpellate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering late summer–fall. +
green +  and tan +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
ovate +  and oblong +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
pale reddish-brown +  and green +
erect +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus sect. Asiris +, Haplopappus sect. Ericameria +, Haplopappus sect. Macronema +  and Haplopappus sect. Stenotopsis +
Ericameria watsonii +
Ericameria +
species +
campanulate +
perennial +, biennial +  and annual +