Five types of peas, differing in the amount of wax on stem and leaves, are distinguished. As a result of several crosses between them, the following formulae are given: BlBlW 2a W 2a W 2bW2b: type 4, much wax (glaucous); BlBlW 2a W 2a W 1b W 1b: type 3, between much and little wax; BlBlW 2a W 1awbwb: type 2b, little wax; BlBlW 1a W 1a W 2b W 2b: type 2a, little wax; BlBlw a w a W 2b W 2b- type 1, between little and no wax; blblW 2a W 2a W 2b W 2b: type 0, no wax.