Flora of North America species comparison

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Balsamorhiza sericea

Balsamorhiza lanata

silky balsamroot, silvery balsamroot

lanate balsamroot, woolly balsamroot, Yreka balsamroot
Habit Plants 10–30(–40) cm. Plants 10–20(–30) cm.
Basal leaves

blades silvery, lanceolate or lance-ovate, 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.

blades white to grayish, lanceolate to linear-oblong, 10–20 × 3–6(–8) cm (1–2-pinnatifid, primary lobes lance-linear to oblong, mostly 5–40 × 1–10 mm, secondary lobes or teeth antrorse, divergent), bases cuneate to truncate, ultimate margins mostly entire (± revolute), apices rounded to acute, faces densely lanate-tomentose to villous.
Involucres

campanulate to hemispheric, 11–20+ mm diam.

± hemispheric, 12–20 mm diam.
Ray laminae

15–20 mm (adaxially puberulous on veins).

(10–)15–20 mm (abaxially puberulent or glabrous).
Outer phyllaries

broadly ovate to triangular-ovate, 12–20 mm, slightly surpassing inner, apices acuminate to attenuate (margins not ciliate).

lanceolate to linear, 10–20 mm, sometimes surpassing inner, apices acute to attenuate.
Heads

borne singly.

borne singly.

Balsamorhiza sericea

Balsamorhiza lanata
Phenology Flowering Apr–May. Flowering Apr–May(–Jun).
Habitat Serpentine outcrops, among surface rocks, in crevices, hillsides, dry streamsides among cobbles Roadsides, grassy slopes
Elevation 400–1800 m (1300–5900 ft) 700–1500 m (2300–4900 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[BONAP county map]
Discussion

Balsamorhiza sericea hybridizes with B. deltoidea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Balsamorhiza lanata is known from a relatively restricted area in northern California and southern Oregon. No hybrids between it and other species have been noted.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 96. FNA vol. 21, p. 97.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza
Sibling taxa
B. careyana, B. deltoidea, B. hispidula, B. hookeri, B. incana, B. lanata, B. macrolepis, B. macrophylla, B. rosea, B. sagittata, B. serrata
B. careyana, B. deltoidea, B. hispidula, B. hookeri, B. incana, B. macrolepis, B. macrophylla, B. rosea, B. sagittata, B. sericea, B. serrata
Synonyms B. hookeri var. lanata
Name authority W. A. Weber: Phytologia 50: 358. (1982) (W. M. Sharp) W. A. Weber: Phytologia 85: 20. (1999)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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