As the annotator indicates, at least figures 1 & 2 seem to be Fuligo septica. According to modern taxonomy, they are not fungi, but protozoa.
Figure
Modern name
Sowerby's species name
Notes
1
Fuligo septica (L.) F.H. Wigg. (1780)
Reticularia hortensis. Bull. 424. fig. 2. With. 3 ed. v. 4. p. 387.
2
Fuligo septica (L.) F.H. Wigg. (1780)
Reticularia lutea. Bull. 380. fig. 1.
3
Reticularia carnosa. Bull. 424. fig. 1.
May also be F. septica
4
Reticularia cerea.
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