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Table 1 The criteria of division of wild vegetables (mg/kg fresh edible parts)

From: An integrated assessment of wild vegetable resources in Inner Mongolian Autonomous Region, China

  Carotene Vitamin B2 Vitamin C
Type I ≥ 50 ≥ 5 ≥ 500
Type II ≥ 50 ≥ 5 < 500
  ≥ 50 < 5 ≥ 500
  < 50 ≥ 5 ≥ 500
Type III ≥ 50 < 5 < 500
  < 50 ≥ 5 < 500
  < 50 < 5 ≥ 500
Type IV < 50 < 5 < 500