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tower mustard

Habit Biennial or short-lived perennial from a simple crown, the stem usually single, simple or branched above, 3-15 dm. tall, pubescent with stiff, simple hairs at the base, becoming glabrous above.
Leaves

Leaves mainly cauline, the basal ones oblanceolate, 3-14 cm. long, usually remotely toothed, the blade narrowed to a short, winged, greenish petiole, pubescent with a mixture of simple and stellate hairs;

cauline leaves alternate, overlapping, lanceolate to ovate-lanceolate, 5-15 cm. long and up to 4 cm. broad, sessile and conspicuously auriculate.

Flowers

Inflorescence a many-flowered raceme, up to 6 dm. long in fruit; pedicles slender, 5-12 mm. long;

sepals 4, 3 mm. long, not gibbous at the base;

petals 4, cream colored, 5-6 mm. long;

stamens 6;

style 1-1.5 mm. long.

Fruits

Siliques glabrous, 6-10 cm. long and 1-1.5 mm. broad, 1-nerved nearly full length;

seeds in 2 series, 1-1.5 mm. long with a winged margin 0.2 mm. broad.

Turritis glabra

Flowering time May-July
Habitat Seasonally moist, sometimes rocky, soil in open woods, clearings, and grassy balds.
Distribution
Occurring on both sides of the Cascades crest in Washington; Alaska to northern California, east to the Rocky Mountains, northern Great Plains, and eastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
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