Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Marshes, river banks, salt flats, muddy or sandy beaches and shores along and near the coast.
Conservation Status: Not of concern
Small perennial from a rhizome, with the leaves rising in tufts at intervals along the rhizome.
Leaves reduced to elongate, hollow, entire, transversely septate phyllodes; leaves 3-15 cm. long and 1-4 mm. wide, with 5-11 partitions.
Inflorescence of simple, axillary, pedunculate umbels; peduncles slender, 0.5-3 cm. long, recurved above, much shorter than the leaves; umbel 5- to 12-flowered, the calyx teeth minute, the flowers white; involucre of a few small bracts.
Fruit ovoid, 2 mm. long, the lateral ribs pale, corky-thickened and prominent, the dorsal ribs inconspicuous.