23. Bacidia rimosa, Kn. a, two spores. 24. Bacidia carneo-rufa, Kn. a, spore. 25. Bacidia rosello-carnea, Kn. a, two spores. 26. Bacidia pseudo-pyrra, Kn. a, ascus with spores. b, spore. 27. Bacidia leuco-carpa, Kn. a, spore. 28. Bacidia spodoelæina, Kn. a, spore. 29. Bacidia chryso-carpa, Kn. a, spore. 30. Bacidia nanospora, Kn. a, spore. b, granulæ gonimæ in nodule. 31. Bacidia pannaroidea, Kn. a, granulæ gonimæ in nodule. b, spore. 32. Bacidia rhodocarpa, Kn. a, ascus with spores. b, granulæ gonimæ in nodule. 33. Bacidia albido-prasina, Kn. a, spore. 34. Lecidea cerino-carpa, Kn. a, ascus with spores. b, granulæ gonimæ in nodule. 35. Lecidea rhypoderma, Kn. Ascus with spores. 36. Lecidea parvifolia v. corallina, Tuck. Ascus with spores. 37. Lecidea microdactyla, Kn. Ascus with spores. 38. Lecidea conisalea, Kn. Ascus with spores. 39. Lecidea semipallida, Kn. Three spores. 40. Lecidea albiprætexta, Kn. Ascus with spores. 41. Lecidea glandulosa, Kn. a, ascus with spores. b, granulæ gonimæ in nodule. c, ascus with spores. 42. Lecidea coccodes, Kn. a, ascus with spores. b, paraphysis. 43. Platygrapha macrospora, Kn. a, apothecium, magnified about 40 diameters. b, two spores. 44. Platygrapha myriommata, Kn. a, apothecium, magnified about 40 diameters. b, three spores. 45. Platygrapha mecistospora, Kn. a, ascus, with spores. b, apothecium, magnified about 40 diameters. 46. Verrucaria leptostegia, Kn. a, apothecia, magnified about 40 diameters. b, spores in ascus. c, spermagonium, magnified about 40 diameters. d, spermatia. 47. Megalospora dispora, Kn. a, apothecium, magnified about 40 diameters. b, spore. c, ascus with two spores, less highly magnified. 48. Lecanora homologa, Nyl. a, spores in ascus. b, spore. Note.—The figures magnified about 900 diameters, except where otherwise noted.