In: Account of an Expedition from Pittsburgh to the Rocky Mountains. Philadelphia: H.C. Carey and I. Lea 2: 3. 1823. «Plant Name Details for Geranium caespitosum». IPNI. Consultado el 5 de julio de 2010. «[Notes on the type specimen:] Mora River, San Miguel County (New Mexico, South-Central U.S.A, Northern America)».