Charles D. Richards

• Check-list of the vascular plants of Maine
• Cut-leaved anemone, Anemone multifida Poir. in Maine and its relevance to the Critical Areas Program
• Field oxytrope, Oxytropis johannensis Fern, in Maine and its relevance to the Critical Areas Program
• Northern painted-cup Castilleja septentrionalis Lindl. in Maine and its relevance to the Critical Areas Program