- Jun 9, 2006
- Reaction score
- Leiper's Fork, TN
Sometimes it is a matter of semantics. Technically, album forms should have no anthocyanins (purple) and no flavonoids (yellow), only chlorophyll. Some, however, use this term to describe plants lacking only the anthocyanins, which are more appropriately described as flavum forms. If we call the yellow ones "album" what do we call the white ones? Sometimes the gene expression varies with the environment as well. I have a Wossner Vollmond which blooms yellow in cold weather and white in warm weather.
I agree with you. I have seen the flava/ flavum nomenclature used for the nominal form for years, and haven't seen a reference to the aureum version until recently. In herps the term xanthics is used to describe animals that lack all pigments except yellow or white. In either case (plant or herp) I think the varietal name is derived from the pigments that are still present in the organism.