That is a great question. In general, its nearly impossible to ID from one or two photos. Along with everything else, color is so subjective: what looks like blood red to you, might look totally different in the posted photo. I will often describe the color along with posting the photo. Some cultivars have a unique appearance, they are easily IDed: Picotee or Nymph are good examples of this. It is usually a matter of elimination, narrowing the possibilities to 2 or 3, more than giving a positive ID. A ID also depends on how long you've had the cultivar. Each year there are many new cultivars introduced, sold for a year or two, then never seen on the market again. For example, if you bought the bulb 5 years ago, that might narrow the possibilities for an ID, depending on what was widely sold back then. It helps to know where you got the bulb; from a box store, internet source, local nursery or from a neighbor. The more photos you post the better, including the back of the bloom, the center of the bloom, also photos showing the bloom as it ages: the appearance can dramatically change. The size of the bloom, across the front (tip to opposite tip) is important in deciding if it is a standard or miniature, or in the case of the Hadeco ones; a Symphony, Sonata or Sonatini. For myself, the more patterning (stripes, stars, speckles, veins, etc.) on the bloom the better, the really tough ones to ID are the solid colored ones. Enjoy your baby Amaryllis.
