2. Barbarea vulgaris R. Br. (yellow rocket, common winter cress)
B. vulgaris var. arcuata (Opiz ex J. Presl & C. Presl) Fr.
h–j; Map 1318
Stems (20–)30–80(–100) cm long. Leaves 2–15 cm
long, the basal and lowermost stem leaves with the blade oblanceolate, deeply
pinnately divided with 2–8 small, lateral segments or lobes and a
large, circular to oval, terminal lobe, the median and upper stem leaves
oblanceolate, irregularly lobed, toothed, or nearly entire. Sepals 3–4
mm long. Petals 5–9 mm long. Styles 1.5–3.0 mm long. Fruits
(0.7–)1.5–3.0 cm long, the stalks 3–7 mm long, narrower
than the fruits. Ovules or seeds 18–24(–28) per ovary or fruit,
the seeds 1.0–1.5 mm long, circular in outline, oblong in
cross-section, somewhat flattened. 2n=16. April–June.
Introduced, common throughout Missouri (native
of Europe, Asia, widely naturalized in North America).
Banks of streams; also pastures, fields, roadsides, railroads, and open,
The young leaves of B. vulgaris sometimes are eaten cooked or raw.