Corydalis

• Choose this species
  C. solida

  1a. Corolla purple (rarely white, pink, red, or purple-blue), 15–25 (–30) mm long; plants perennial; stem arising from a tuber
• See list of 2 species in 1b
  CHOOSE THIS LEAD

  1b. Corolla pale yellow or bright yellow, 7–16 mm long; plants annual or biennial; stem arising from a taproot
  • Choose this species
    C. flavula

    2a. Corolla pale yellow, 7–9 mm long; upper outer petal (i.e., the spurred petal) with a conspicuous undulate to toothed crest toward the tip; spur 1–1.5 (–2) mm long; sepals ca. 0.3 mm long
  • Choose this species
    C. aurea

    2b. Corolla bright yellow, 12–16 mm long; upper outer petal with merely a keel, lacking a toothed crest; spur 4–5 mm long; sepals 1–2 mm long

Show All Couplets

 Show photos of:   Each photo represents one species in this genus.