Not a problem, I found out the same way, but years before the internet. I come from 4 generations of tree care. For some reason I always thought Pin Oak had skinny pointy leaves. One time I called a Willow, or Laurel Oak, a Pin. Every one on the crew gave me the "stink" eye. Which made me feel about an in tall, because I was the company owners son. I was supposed to know that stuff. When I took the MD Tree Expet Exam I had the highest score in my class that day, but I almost failed the ID. They had a bunch of extra credit trees and I got all of them. That was 15 years and a Botany Major at the U of MD later. Now they don't even have the ID on the test.