If there was any doubt about the national momentum on legalized marijuana use in America, consider this. There will be a medicinal marijuana dispensary off Union Square come January 2016. The dispensary on 14th Street between Second and Third Avenues will be run by Columbia Care, a New York City-based company that was awarded one of the state’s five licenses to open a medicinal marijuana shop. The selections were made in July, and companies are moving forward on grand openings.