PLATE IV 

20, es Vine. 42. C/o) _ 24. Climbing False Buckwheat. 
21. Wild Cypress Vine. 28. (7/;) 4. (2/3) 
22. Field Convolvulus. 30. ('/3) 25. Wintergreen. 36. (7/;) 
23. Pipe Vine. 31. (1/;) 26. Moonseed. 39. (?/4) 
