Wow…there are several different takes on the subject. I always understood that a LD is more focused on Landscape Specific projects and is more into the asthetic and horticultural end of design (more plant based). Where as a LA is a licensed professional who has a broader scope of eduacation that covers LD and many other aspects of Site Planning. It is broad in the sense of understanding good planning practices of communites, urban design, residential, commercial, institutional master plans, as well as grading, stormwater, hardscape design, CE, SE, with the bigger picture in mind. How does it a project fit into the fabric of it’s surroundings with the an understanding of it impacts on the overall. Plus as an LA you essentially take on a greater liability with a license.