Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Epiphyllum pumilum is a cactus species native to Mexico and Guatemala. The species is commonly grown as an ornamental for its beautiful, fragrant flowers in the summer. This specific epithet refers to the relatively small flowers of this species. History F. Eichlam found this cacti in Guatemala and sent a living specimen to the U. S. which flowered in Washington on October 3, 1912. It had previously been collected at several occasions but passed as E. pittieri. Unaware of its variable nature, Britton and Rose described the same species again in the same paper, under the name E. caudatum. This time from a specimen collected in Oaxaca, Mexico collected by E. W. Nelson in 1894. Later the same year, Vaupel transferred the two taxa to Phyllocactus, an invalid name used in Europe by that time.

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