We master gardeners know a lot about plants, but most of us aren't botanists or horticulturalists. Some plants are easy to identify because they are common or have distinctive features that make it simple to find them in reference books and on-line resources. Others are difficult to name because they are uncommon or resemble so many other plants that they can only be accurately identified by noting minute comparative details in structure, size, blossoms, fruit, etc. that can only be seen with the plants in hand. Identifying plants from a few photos taken at the same developmental stage is nearly impossible.