Page authors: Don Knoke, David Giblin
Sanicula marilandica
Maryland black-snakeroot

Distribution: Occurring east of the Cascades crest in the northeastern counties in Washington; Eastern British Columbia to northeast Washington, east to the Atlantic coast.

Habitat: Moist, low ground, less often on moist, wooded slopes.

Flowers: May-June

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Perennial with a cluster of fibrous roots from a short crown, the stem solitary, erect, branched only above, 4-12 dm. tall.


Basal and lower cauline leaves long-petiolate, the blade 6-15 cm. wide, palmately 5- to 7-parted or palmately compound, the segments or leaflets toothed or lobed; cauline leaves several, gradually reduced upward, becoming sessile.


Umbels head-like, subtended by leaf bracts, 1 cm. wide or less, greenish-white, 15- to 25-flowered, the majority staminate; calyx lobes 5, firm, triangular, tapered; styles 2, elongate, persistent.


Fruits ovoid, 4-6 mm. long and 3-5 mm. wide, covered with numerous hooked prickles.

Accepted Name:
Sanicula marilandica L.
Publication: Sp. Pl. 1: 235 1753.

Synonyms & Misapplications:
Caucalis mirilandica
Sanicula canadensis var. marilandica
Sanicula marilandica L. var. petiolulata Fernald
Additional Resources:

PNW Herbaria: Specimen records of Sanicula marilandica in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Sanicula marilandica checklist entry.

E-Flora BC: Sanicula marilandica atlas page.

CalPhotos: Sanicula marilandica photos.

USDA Plants: Sanicula marilandica information.

19 photographs:
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