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Montana Field Guide

Montana Field Guides

Common Comfrey - Symphytum officinale
Other Names:  Boneset, Knitbone, Consound, Slippery-root

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Taprooted perennial. Stems erect, 30–100 cm. Herbage hirsute, hispid. Leaves basal and cauline, petiolate; blades narrowly ovate to lanceolate, 5–25 cm long, becoming smaller and sessile above. Inflorescence small, axillary and terminal, ebracteate cymes. Flowers: calyx ca. 5 mm long, divided >1/2-way; corolla yellowish, funnelform, 1–2 cm long, tube longer than limb; stamens inserted at the fornices; style exserted. Nutlets ovoid, ca. 4 mm long, smooth, black; scar below the ventral keel (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced for medicinal purposes to much of North America; native to Europe (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 8

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


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Citation for data on this website:
Common Comfrey — Symphytum officinale.  Montana Field Guide.  .  Retrieved on , from