ARUM AND PIPEWORT FAMILIES 115 
PLATE 9 
1. Peltandra virginica. 2. Orontium aquaticum. 3. Acorus Calamus. 
4. Symplocarpus foetidus. 5. Eriocaulon decangulare, 6. Xyris fimbriata. 
7. X. arenicola, 8. X. flexuosa. 9. Eriocaulon articulatum. 10. Pontederia 
