ARUM FAMILY 111 
PLATE 8 
1. Arisaema triphyllum. la, Corm of A. triphyllum. 2. Commelina com- 
munis. 3. C. virginica. 4. C. hirtella (leaf and sheath). 5. Tradescantia 
Virginiana. 6. Calla palustris. 7. Arisaema Dracontium. 
