Ericameria obovata

(Rydberg) G. L. Nesom

Phytologia 68: 152. 1990.

Common names: Rydberg’s goldenbush
Endemic
Basionym: Macronema obovatum Rydberg Bull. Torrey Bot. Club 27: 618. 1900
Synonyms: Haplopappus rydbergii S. F. Blake Haplopappus watsonii var. rydbergii (S. F. Blake) S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 69. Mentioned on page 53.

Plants 20–40 cm. Stems erect to ascending, green, becoming tan, branched, stipitate-glandular. Leaves ascending; blades obovate to spatulate (flat), 10–30 × 4–12 mm, midnerves evident (1–2 collateral nerves sometimes present, abaxial reticulum of secondary-veins often evident), (margins often undulate) apices obtuse, apiculate, faces densely stipitate-glandular; axillary fascicules usually absent. Heads in cymiform to racemiform arrays (1–3 cm wide). Peduncles 1–7 mm (stipitate-glandular). Involucres obconic, 6–8 × 4–7 mm. Phyllaries 22–28 in 4–6 series, tan, ovate to elliptic, 1–6 × 0.5–1.2 mm, strongly unequal, mostly chartaceous, midnerves evident, (margins narrowly membranous, entire or minutely lacerate) apices acute to acuminate, abaxial faces mostly stipitate-glandular, resinous. Ray-florets 4–9; laminae elliptic, 3.5–6 × 1.2–1.8 mm. Disc-florets 9–15; corollas 6.2–6.8 mm. Cypselae tan to reddish-brown, columnar, 3.5–4.5 mm [ribs unknown], villous; pappi tan, 4–5.5 mm. 2n = 36.


Phenology: Flowering late summer–fall.
Habitat: Open rocky soils, mostly associated with desert shrub, pinyon-juniper, and lower ponderosa pine
Elevation: 1500–3400 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Ericameria obovata"
stipitate-glandular +
not tailed +, rounded +  and obtuse +
distinct +
acute;acuminate +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
cymiform +  and racemiform +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(Rydberg) G. L. Nesom +
decurrent +
Macronema obovatum +
compound +  and simple +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
obovate;spatulate +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Rydberg’s goldenbush +
not 2-lipped +  and actinomorphic +
0.62 cm6.2 mm <br />0.0062 m <br /> (0.68 cm6.8 mm <br />0.0068 m <br />) +
tan +  and reddish-brown +
fertile +  and bisexual +
fertile +  and bisexual +
1500–3400 m +
resinous +
gland-dotted;gland-dotted +
stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open rocky soils, mostly associated with desert shrub, pinyon-juniper, and lower ponderosa pine +
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 />) +
3.5mm;6mm +
1.2mm;1.8mm +
sessile +  and petiolate +
erect;spreading or reflexed +
deltate +  and triangular +
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 /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering late summer–fall. +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
ovate +  and elliptic +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
tan +  and green +
erect +  and ascending +
stipitate-glandular +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus rydbergii +  and Haplopappus watsonii var. rydbergii +
Ericameria obovata +
Ericameria +
species +
campanulate +
perennial +, biennial +  and annual +