Flora of North America species comparison

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Balsamorhiza deltoidea

Balsamorhiza lanata

deltoid balsam root, Puget balsamroot

lanate balsamroot, woolly balsamroot, Yreka balsamroot
Habit Plants 20–90 cm. Plants 10–20(–30) cm.
Basal leaves

blades green, deltate or rounded-deltate to triangular-deltate, 10–25+ × 7–15(–20) cm, bases cordate to sagittate, margins usually crenate to dentate (at least near bases), sometimes entire, apices acute, faces usually sparsely hirtellous to hispidulous, sometimes glabrous (usually gland-dotted, sometimes vernicose).

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 15–30+ mm diam.

± hemispheric, 12–20 mm diam.
Ray laminae

20–50 mm.

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

oblong to lanceolate or lance-linear, (12–)30–40(–60) mm, usually much surpassing inner, apices acute.

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

usually borne singly, sometimes 2+.

borne singly.
2n

= 38.

Balsamorhiza deltoidea

Balsamorhiza lanata
Phenology Flowering (Mar–)Apr–Jun(–Jul). Flowering Apr–May(–Jun).
Habitat Open hillsides, openings in chaparral or forests Roadsides, grassy slopes
Elevation 60–1800(–2400) m (200–5900(–7900) ft) 700–1500 m (2300–4900 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[BONAP county map]
Discussion

Balsamorhiza deltoidea varies in the crenation of the leaf margins. The variability may stem from an old hybridization with B. hookeri or other species of Balsamorhiza. Otherwise, B. deltoidea shows little significant variability except where it hybridizes with B. careyana in the narrows of the Columbia River Gorge.

(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. 95. FNA vol. 21, p. 97.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Artorhiza Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza
Sibling taxa
B. careyana, B. hispidula, B. hookeri, B. incana, B. lanata, B. macrolepis, B. macrophylla, B. rosea, B. sagittata, B. sericea, 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. glabrescens B. hookeri var. lanata
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 351. (1840) (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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