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Front cover (left) and two representative figures from Macfarlane's monograph. The one in the centre shows vegetative and floral parts of N. ampullaria; the one on the right illustrates various glandular structures.
"Nepenthaceae" is a monograph by John Muirhead Macfarlane on the tropical pitcher plants of the genus Nepenthes.[1] It was published in 1908 in Adolf Engler's Das Pflanzenreich.[1] It was the most exhaustive revision of the genus up to that point, covering all known species, and included detailed accounts of the structure, anatomy, and development of Nepenthes.[1]