BM4 medium

Originally cited by Van Waes, 1984. In vitro studie van de kiemingsfysiologie van Westeuropese orchideeën. Thesis. Rijkuniversiteit Gent.

Same as BM medium, but inorganic nitrogen is  removed (KNO_3, (NH₄) ₂SO₄, and NH₄NO₃), and the following added:

Casein hydrolysate  500 mg  L-glutamine  100 mg  Benzyladenine  0.2 mg Myo-inositol  1 g

Source: Rasmussen, H. Terrestrial orchids from seed to mycotrophic plant. Cambridge University Press, Cambridge. 1995.