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Barbarea
See list of 4 species in this genusCilia near the apex of the sepals and auricles of upper leaves are an important identification characters for New England Barbarea. However, the cilia are sometimes very sparse and may number only 1 or a few on the margins of these organs.
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1a. Basal leaf blades with 4–10 pairs of lateral lobes; siliques (40–) 53–70 (–80) mm long; fruiting pedicels 1.2–1.8 mm thick
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1b. Basal leaf blades simple or with 1–4 pairs of lateral lobes; siliques 10–40 (–45) mm long; fruiting pedicels up to 1 mm thick
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2a. Silique with a persistent style beak 2–3 (–3.5) mm long; petals 6–8 mm long; auricles of uppermost leaves eciliate [Fig. 505]; sepals glabrous
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2b. Silique with a persistent style beak 0.5–1.6 (–2.3) mm long; petals 3–6 mm long; auricles of uppermost leaves ciliate; sepals usually pubescent near the apex (sometimes glabrous in B. stricta)
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3a. Petals (1.5–) 2–3 mm wide; siliques (25–) 31–40 (–45) mm long; pedicels 3–7 mm long in fruit; upper leaf blades usually coarsely toothed to pinnately lobed
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3b. Petals 0.5–1 (–1.2) mm wide; siliques (12–) 18–28 (–30) mm long; pedicels 1–3 (–4) mm long in fruit; upper leaf blades usually toothed or with a few shallow sinuses
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Each photo represents one species in this genus.