Publisher's Synopsis
Excerpt from The Establishment of Varieties in Coleus by the Selection of Somatic Variations
De Vries makes a most comprehensive analysis Of the nature Of variegation and concludes (1901, vol. I, p. 616) that the capacity for variegation is more widely distributed in the plant kingdom as a latent or semilatent character than perhaps any other character. He notes that true aurea varieties are few and are remarkably constant. Most variegated races Show rather wide ?uctuations and constitute what he calls intermediate races. His scheme (1901, vol I, p. 424) Of represent ing the relationship is as follows: Anomaly. I. Original species, green II. Half race, rarely variegated. III. An equilibrium is maintained. IV. Eversporting variety, variegated. Semilatent. Active. V. Constant variety, aurea Latent. Active.
In a later publication (1913) de Vries considers that the pangens, which he assumes are directly concerned with the transmission and expression Of characters, may be not only active, semilatent, and latent, but also labile.
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