Burke: Teesdalia nudicaulis

	Teesdalia nudicaulis
	shepherd's cress
Habit	Glabrous, annual herbs, the stems single, simple or freely-branched from the base, 5-25 cm. tall.
Leaves	Leaves mostly in a basal rosette, 1.5-5 cm. long, slender-petiolate, the blades oval to oblanceolate or obovate, entire to lyrate-pinnatifid.
Flowers	Inflorescence a terminal, bractless raceme, the stem scapose or with 1-several bract-like, entire to deeply-lobed leaves; pedicles slender, divergent, 4-8 mm. long; sepals 4, not saccate, often purple-tinged, about 0.5 mm. long; petals 4, white, 1 mm. long; stamens 6, the filaments with broad, scale-like, whitish, basal appendages; style lacking.
Fruits	Silicles strongly obcompressed, oblong-obovate, 3-3.5 mm. long and nearly as wide, the valves keeled and slightly winged above; seeds 2 in each cell.

	Teesdalia nudicaulis
Flowering time	March-May
Habitat	Sandy or gravelly soil at low elevations.
Distribution	Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, also in northeastern U.S. [WildflowerSearch map] [BONAP county map]
Origin	Introduced from Europe
Conservation status	Not of concern
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Teesdalia nudicaulis

shepherd's cress

Habit

Glabrous, annual herbs, the stems single, simple or freely-branched from the base, 5-25 cm. tall.

Leaves

Leaves mostly in a basal rosette, 1.5-5 cm. long, slender-petiolate, the blades oval to oblanceolate or obovate, entire to lyrate-pinnatifid.

Flowers

Inflorescence a terminal, bractless raceme, the stem scapose or with 1-several bract-like, entire to deeply-lobed leaves; pedicles slender, divergent, 4-8 mm. long;

sepals 4, not saccate, often purple-tinged, about 0.5 mm. long;

petals 4, white, 1 mm. long;

stamens 6, the filaments with broad, scale-like, whitish, basal appendages;

style lacking.

Fruits

Silicles strongly obcompressed, oblong-obovate, 3-3.5 mm. long and nearly as wide, the valves keeled and slightly winged above;

seeds 2 in each cell.