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IV. L. ovate, nerve excurrent.
A. monoicous.
23. uliginosum.
24. pallescens.
25. Sauteri.
B. synoicous.
a. inner perist. imperfect.
26. cernuum.
27. inclinatum.
b. inner perist. perfect.
28. intermedium.
29. bimum.
30. torquescens.
C. dioicous.
31. obconicum.
32. capillare.
33. Donianum.
34. Billarderii.
35. cæspiticium.
36. murale.
37. sanguineum.
38. atropurpureum.
39. apiculatum.
V. L. very concave, imbricate, nerve mostly ceasing below apex, dioicous.
A. caps. symmetrical.
40. julaceum.
41. argenteum.
42. Funkii.
