No key was found for the requested taxon, but its parent (Argemone) is keyed as shown below.

Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Click images to enlarge and show more photo credit.

Key to Papaveraceae

Papaveraceae

Copy permalink to share

1 Flowering stem scapose, leaves basal only; petals 8-16, white; [subfamily Chelidonioideae]
1 Flowering stem with leaves at least low on the stem; petals 0-6, purple, red, orange-red, orange, yellow, cream.
  2 Inflorescence a panicle; petals absent; [subfamily Chelidonioideae]
  2 Inflorescence not a panicle; petals present, 4-6.
    3 Leaves and fruits prickly; [subfamily Papaveroideae]
    3 Leaves and fruits not prickly.
      4 Sepals connate; leaves ternately dissected into linear segments; sap watery; [subfamily Eschscholzioideae]
      4 Sepals separate; leaves pinnately lobed; sap yellow, orange, or milky.
        5 Flowers several in a terminal umbel; [subfamily Chelidonioideae]
        5 Flowers solitary, terminal.
          6 Fruit 15-30 cm long, 2-locular (the partitions complete), dehiscent by elongate valves; stigmatic lobes 2; [subfamily Chelidonioideae]
          6 Fruit 1-8 cm long, 4-20-locular (the partitions incomplete), dehiscent by small valves beneath the stigmatic disc; stigmatic lobes 4-20; [subfamily Papaveroideae]