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ANDRÉ, ED. 1. _Nutrition des plantes aériennes._ _L’Illustration
hortieole._ Vol. 24. *1877.* p. 67.
— 2. _Sur les Broméliacées._ Ibid. p. 78.
BAKER, J. G. A. 1. _Synopsis of the species of Diaphoranthema._ _Journal
of Botany._ *1878* p. 236 sqq.
— 2. _A synopsis of the genus Aechmea R. et P._ Ibid. *1879.* S.-A.
— 3. _A synopsis of the genus Pitcairnia._ Ibid. *1881.* S.-A.
— 4. _Handbook of the Fern-Allies._ London *1887.*
BALL, J. _Notes on the botany of western South-America._ _Linnean
Society’s Journal._ _Botany._ Vol. 22. p. 137 ff. *1886.*