Ericameria nauseosa var. speciosa

(Nuttall) G. L. Nesom & G. I. Baird

Phytologia 75: 87. 1993.

Endemic
Basionym: Chrysothamnus speciosus Nuttall Trans. Amer. Philos. Soc., n. s. 7: 323. 1840
Synonyms: Chrysothamnus nauseosus subsp. albicaulis (Nuttall) H. M. Hall & Clements Chrysothamnus nauseosus subsp. speciosus (Nuttall) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Mentioned on page 64, 68.

Plants 40–200 cm (shorter in some alpine forms). Stems whitish, leafy, loosely tomentose. Leaves dark green to grayish white; blades 1-nerved, linear to linear-oblanceolate, 30–70 × 0.3–1.5 (–2.5) mm, faces usually loosely, rarely compactly, tomentose. Involucres 7.5–13.5 mm. Phyllaries 12–28, apices erect, acute, abaxial faces tomentose (especially outer), sometimes sparsely. Corollas 8.7–13 mm, tubes tomentose or glabrous, lobes 1.1–2.1 mm, glabrous; style appendages longer than stigmatic portions. Cypselae densely hairy; pappi 6–11.3 mm.


Phenology: Flowering late summer–fall.
Habitat: Dry habitats, including juniper-sage, yellow pine, and pinyon communities
Elevation: 50–3500 m

Distribution

V20-118-distribution-map.gif

Alta., B.C., Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Variety speciosa intergrades with vars. hololeuca and oreophila. Stabilized hybrids with Ericameria discoidea occur in Mono County, California.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
rounded +  and flat-topped +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(Nuttall) G. L. Nesom & G. I. Baird +
decurrent +
Chrysothamnus speciosus +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
linear;linear-oblanceolate +
0.3mm;1.5mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
not 2-lipped +  and actinomorphic +
0.87 cm8.7 mm <br />0.0087 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
50–3500 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry habitats, including juniper-sage, yellow pine, and pinyon 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 /> (1.6 cm16 mm <br />0.016 m <br />) +
obconic;subcylindric +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.35 cm13.5 mm <br />0.0135 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
dark green +  and grayish white +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.6 cm6 mm <br />0.006 m <br /> (1.13 cm11.3 mm <br />0.0113 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering late summer–fall. +
0.15 cm1.5 mm <br />0.0015 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ovate +  and lanceolate +
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 +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus subsp. albicaulis +  and Chrysothamnus nauseosus subsp. speciosus +
Ericameria nauseosa var. speciosa +
Ericameria nauseosa +
variety +
campanulate +
glabrous +  and tomentose +
perennial +, biennial +  and annual +