Balsamorhiza serrata

A. Nelson & J. F. Macbride

Bot. Gaz. 56: 479. 1913.

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

Plants 10–20 (–30) cm. Basal leaves: blades pale green to gray-green, lanceolate or lanceovate, 5–15 (–20+) × 2–5 (–10) cm (earliest sometimes, later seldom, pinnately lobed, mostly toward tips), bases usually cuneate to subtruncate, sometimes cordate, margins usually dentate to serrate, apices acute, faces hirsutulous to scabrous. Heads usually borne singly. Involucres campanulate, 15–25 mm diam. Outer phyllaries lanceolate to lance-triangular, 10–22 mm, shorter than inner, apices acute to attenuate (margins ciliate). Ray laminae (20–) 30–40.2n = 38.


Phenology: Flowering Apr–Jun.
Habitat: Basaltic scablands, sagebrush scrub, openings in forests, meadow borders
Elevation: (1000–)1400–1500 m

Distribution

V21-223-distribution-map.gif

Calif., Nev., Oreg., Wash.

Discussion

Balsamorhiza serrata hybridizes with B. careyana. Leaves of the hybrids tend to be prostrate rather than erect. Most of the hybrids display the larger size of B. careyana and lack the pubescence of the heads; serrata-like plants never develop more than a single head nor do they have the pubescence of the cypselae.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Balsamorhiza serrata"
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 +
A. Nelson & J. F. Macbride +
bristlelike +
coroniform +
not corrugated +
cordate +, usually cuneate +  and subtruncate +
compound +  and simple +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
pale green +  and gray-green +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lanceovate;lanceolate +
2cm;5cm +
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. +, Nev. +, Oreg. +  and Wash. +
(1000–)1400–1500 m +
hirsutulous +  and scabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Basaltic scablands, sagebrush scrub, openings in forests, meadow borders +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
campanulate +
alternate +  and opposite +
deltate +
crenate +  and entire +
lanceolate +  and lance-triangular +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
2-carpellate +
persistent +
Flowering Apr–Jun. +
8 +  and 20 +
unequal +  and subequal +
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 serrata +
Balsamorhiza subg. Balsamorhiza +
species +
cylindric +
cylindric +
shorter to longer than campanulate +
entire +, serrate +  and dentate +
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 />) +