Nepenthaceae (1908 monograph)

"Nepenthaceae" is a monograph by John Muirhead Macfarlane on the tropical pitcher plants of the genus Nepenthes. It was published in 1908 in Adolf Engler's Das Pflanzenreich. 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.

Macfarlane recognised 58 species, including 8 newly described ones: N. anamensis (later synonymised with N. smilesii),N. beccariana, N. copelandii, N. deaniana, N. hemsleyana, N. neglecta (possibly the natural hybrid between N. gracilis and N. mirabilis),N. philippinensis, and N. tubulosa (later synonymised with N. mirabilis). Macfarlane also described a number of new varieties, including N. alata var. biflora (later synonymised with N. negros),N. alata var. ecristata (later synonymised with N. kurata),N. albomarginata var. rubra, N. hirsuta var. glabrata, N. hirsuta var. typica, N. tentaculata var. tomentosa, and N. vieillardii var. montrouzieri. The varietal name N. gracilis var. arenaria, originating from a herbarium sheet, also appeared in print for the first time in Macfarlane's monograph. The work included all manmade hybrids known at the time.

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