Page authors: Don Knoke, David Giblin
Berula incisa

Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to central North America.

Habitat: Wet areas, often emergent in ponds, lakes, and back water channels, at low elevations.

Flowers: June-September

Origin: Native

Conservation Status: Not of concern


Generally freely-branched, soft, fibrous-rooted perennial, 2-8 dm. tall, often stoloniferous from the base.


Submerged, filiform-dissected leaves often present; the lower aerial leaves with 7-21 lance-ovate leaflets with rounded teeth, up to 5 cm. long and 3 cm. wide; the upper aerial leaves with smaller and narrower leaflets with sharper teeth or even pinnatifid.


Inflorescence of several compound umbels, the 6-15 rays 1-2 cm. long; involucre and involucel of evident, narrow bracts; calyx teeth minute; petals 5, white.


Style short, stylopodium conic; fruit elliptic, glabrous, 1.5-2 mm. long, the ribs inconspicuous.

Accepted Name:
Berula incisa (Torr.) G.N. Jones
Publication: Vasc. Pl. Illinois [Jones & Fuller] 353. 1955.

Synonyms & Misapplications:
Berula erecta (Huds.) Coville, misapplied
Berula erecta (Huds.) Coville var. incisa (Torr.) Cronquist [HC, IMF3, VPBC1]
Berula pusilla Fernald
Berula pusillum
Sium erectum Huds. [IMF]
Sium incisum Torr. [VPBC, VPBC]
Sium pusillum Nutt.
Additional Resources:

PNW Herbaria: Specimen records of Berula incisa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Berula incisa checklist entry.

E-Flora BC: Berula incisa atlas page.

CalPhotos: Berula incisa photos.

USDA Plants: Berula incisa information.

1 photographs:
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