Page authors: Don Knoke, David Giblin
Yabea microcarpa
California hedge-parsley, false hedge-parsley

Distribution: Occurring on both sides of the Cascades crest in Washington and in the Columbia River Gorge. British Columbia to Baja California, east to Idaho, Utah, and New Mexico.

Habitat: Along streams, open woodlands, and vernally moist slopes at low elevations.

Flowers: April-June

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Generalist


Slender annual 1-4 dm. tall, simple or branched below, with stiff, spreading hairs throughout.


Leaves alternate, petiolate, mostly cauline, the blade 2-6 cm. long and 2-5 cm. wide, two or three times pinnately dissected into small, narrow ultimate segments.


Inflorescence of compound umbels, the rays of the primary umbels 1-9, 1-8 cm. long, ascending; the pedicels of the ultimate umbels short and unequal; involucre of several well-developed leaves; involucel of several entire or pinnatifid bractlets; calyx teeth 5; petals 5, white, obovate; styles 2, short.


Fruit oblong, 3-7 mm. long, with hooked prickles along the ribs, those of alternate ribs larger.

Accepted Name:
Yabea microcarpa (Hook. & Arn.) Koso-Pol.
Publication: Bull. Soc. Imp. Naturalistes Moscou n.s, 28: 202. 1915.

Synonyms & Misapplications:
Caucalis microcarpa Hook. & Arn. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Yabea microcarpa in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Yabea microcarpa checklist entry

OregonFlora: Yabea microcarpa information

E-Flora BC: Yabea microcarpa atlas page

CalPhotos: Yabea microcarpa photos

26 photographs:
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