Calappa is either:

• Calappa (crab), a genus of crabs, including the box crab
• Calappa (palm), a genus of palm trees

• Mimulus leptaleus
• Mimulus lewisii
• Mimulus luteus
• Mimulus mephiticus
• Mimulus michiganensis
• Mimulus mohavensis
• Mimulus montioides
• Mimulus moschatus
• Mimulus nanus
• Mimulus nasutus
• Mimulus palmeri
• Mimulus parishii
• Mimulus peregrinus
• Mimulus pictus
• Mimulus pilosus
• Mimulus primuloides
• Mimulus pulchellus
• Mimulus pulsiferae
• Mimulus purpureus
• Mimulus pygmaeus
• Mimulus rattanii
• Mimulus repens
• Mimulus rubellus
• Mimulus rupicola
• Mimulus shevockii