Balsamorhiza sericea

W. A. Weber

Phytologia 50: 358. 1982.

Endemic
Treatment appears in FNA Volume 21. Treatment on page 96. Mentioned on page 94.

Plants 10–30 (–40) cm. Basal leaves: blades silvery, lanceolate or lanceovate, 9–30 × 2–7 cm (1-pinnatifid, lobes oblong to oblanceolate, 5–35 × 3–17 mm), bases cuneate, ultimate margins usually entire (plane or weakly revolute, obscurely, if at all, ciliate), apices rounded to acute, faces densely sericeous. Heads borne singly. Involucres campanulate to hemispheric, 11–20+ mm diam. Outer phyllaries broadly ovate to triangular-ovate, 12–20 mm, slightly surpassing inner, apices acuminate to attenuate (margins not ciliate). Ray laminae 15–20 mm (adaxially puberulous on veins).


Phenology: Flowering Apr–May.
Habitat: Serpentine outcrops, among surface rocks, in crevices, hillsides, dry streamsides among cobbles
Elevation: 400–1800 m

Discussion

Balsamorhiza sericea hybridizes with B. deltoidea.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Balsamorhiza sericea"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
less corymbiform +  and racemiform +
indeterminate +  and determinate +
William A. Weber +
W. A. Weber +
bristlelike +
coroniform +
not corrugated +
cuneate +
compound +  and simple +
9 cm90 mm <br />0.09 m <br /> (30 cm300 mm <br />0.3 m <br />) +
lanceovate;lanceolate +
2cm;7cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow +  and orange +
hairy +  and glabrous +
3-4-angled +  and prismatic +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Oreg. +
400–1800 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Serpentine outcrops, among surface rocks, in crevices, hillsides, dry streamsides among cobbles +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1.1 cm11 mm <br />0.011 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate;hemispheric +
alternate +  and opposite +
deltate +
entire +, serrate +  and dentate +
crenate +  and entire +
broadly ovate +  and triangular-ovate +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2-carpellate +
persistent +
Flowering Apr–May. +
8 +  and 20 +
unequal +  and subequal +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Balsamorhiza sericea +
Balsamorhiza subg. Balsamorhiza +
species +
cylindric +
cylindric +
shorter to longer than campanulate +
45 cm450 mm <br />0.45 m <br /> (100 cm1,000 mm <br />1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (45 cm450 mm <br />0.45 m <br />) +