Acaciela angustissima is the former Acacia angustissima. I suspect the name change is about priority. The plant already had a published name and then...
The concept of the mountain ranges of the southwest as sky islands goes back to at least 1943 when Natt N. Dodge wrote that...
The Dainty Sulfur (Nathalis iole) flies year round all over Arizona, especially on mild days. The western pygmy blue (Brefidium exile) is the smallest...